diff --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td index c048fc89813f..19b003398b02 100644 --- a/clang/include/clang/Basic/DiagnosticSemaKinds.td +++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td @@ -1,11126 +1,11116 @@ //==--- DiagnosticSemaKinds.td - libsema diagnostics ----------------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===// // Semantic Analysis //===----------------------------------------------------------------------===// let Component = "Sema" in { let CategoryName = "Semantic Issue" in { def note_previous_decl : Note<"%0 declared here">; def note_entity_declared_at : Note<"%0 declared here">; def note_callee_decl : Note<"%0 declared here">; def note_defined_here : Note<"%0 defined here">; // For loop analysis def warn_variables_not_in_loop_body : Warning< "variable%select{s| %1|s %1 and %2|s %1, %2, and %3|s %1, %2, %3, and %4}0 " "used in loop condition not modified in loop body">, InGroup, DefaultIgnore; def warn_redundant_loop_iteration : Warning< "variable %0 is %select{decremented|incremented}1 both in the loop header " "and in the loop body">, InGroup, DefaultIgnore; def note_loop_iteration_here : Note<"%select{decremented|incremented}0 here">; def warn_duplicate_enum_values : Warning< "element %0 has been implicitly assigned %1 which another element has " "been assigned">, InGroup>, DefaultIgnore; def note_duplicate_element : Note<"element %0 also has value %1">; // Absolute value functions def warn_unsigned_abs : Warning< "taking the absolute value of unsigned type %0 has no effect">, InGroup; def note_remove_abs : Note< "remove the call to '%0' since unsigned values cannot be negative">; def warn_abs_too_small : Warning< "absolute value function %0 given an argument of type %1 but has parameter " "of type %2 which may cause truncation of value">, InGroup; def warn_wrong_absolute_value_type : Warning< "using %select{integer|floating point|complex}1 absolute value function %0 " "when argument is of %select{integer|floating point|complex}2 type">, InGroup; def note_replace_abs_function : Note<"use function '%0' instead">; def warn_pointer_abs : Warning< "taking the absolute value of %select{pointer|function|array}0 type %1 is suspicious">, InGroup; def warn_max_unsigned_zero : Warning< "taking the max of " "%select{a value and unsigned zero|unsigned zero and a value}0 " "is always equal to the other value">, InGroup; def note_remove_max_call : Note< "remove call to max function and unsigned zero argument">; def warn_infinite_recursive_function : Warning< "all paths through this function will call itself">, InGroup, DefaultIgnore; def warn_comma_operator : Warning<"possible misuse of comma operator here">, InGroup>, DefaultIgnore; def note_cast_to_void : Note<"cast expression to void to silence warning">; // Constant expressions def err_expr_not_ice : Error< "expression is not an %select{integer|integral}0 constant expression">; def ext_expr_not_ice : Extension< "expression is not an %select{integer|integral}0 constant expression; " "folding it to a constant is a GNU extension">, InGroup; def err_typecheck_converted_constant_expression : Error< "value of type %0 is not implicitly convertible to %1">; def err_typecheck_converted_constant_expression_disallowed : Error< "conversion from %0 to %1 is not allowed in a converted constant expression">; def err_typecheck_converted_constant_expression_indirect : Error< "conversion from %0 to %1 in converted constant expression would " "bind reference to a temporary">; def err_expr_not_cce : Error< "%select{case value|enumerator value|non-type template argument|" "array size|constexpr if condition|explicit specifier argument}0 " "is not a constant expression">; def ext_cce_narrowing : ExtWarn< "%select{case value|enumerator value|non-type template argument|" "array size|constexpr if condition|explicit specifier argument}0 " "%select{cannot be narrowed from type %2 to %3|" "evaluates to %2, which cannot be narrowed to type %3}1">, InGroup, DefaultError, SFINAEFailure; def err_ice_not_integral : Error< "%select{integer|integral}1 constant expression must have " "%select{integer|integral or unscoped enumeration}1 type, not %0">; def err_ice_incomplete_type : Error< "integral constant expression has incomplete class type %0">; def err_ice_explicit_conversion : Error< "integral constant expression requires explicit conversion from %0 to %1">; def note_ice_conversion_here : Note< "conversion to %select{integral|enumeration}0 type %1 declared here">; def err_ice_ambiguous_conversion : Error< "ambiguous conversion from type %0 to an integral or unscoped " "enumeration type">; def err_ice_too_large : Error< "integer constant expression evaluates to value %0 that cannot be " "represented in a %1-bit %select{signed|unsigned}2 integer type">; def err_expr_not_string_literal : Error<"expression is not a string literal">; // Semantic analysis of constant literals. def ext_predef_outside_function : Warning< "predefined identifier is only valid inside function">, InGroup>; def warn_float_overflow : Warning< "magnitude of floating-point constant too large for type %0; maximum is %1">, InGroup; def warn_float_underflow : Warning< "magnitude of floating-point constant too small for type %0; minimum is %1">, InGroup; def warn_double_const_requires_fp64 : Warning< "double precision constant requires cl_khr_fp64, casting to single precision">; def err_half_const_requires_fp16 : Error< "half precision constant requires cl_khr_fp16">; // C99 variable-length arrays def ext_vla : Extension<"variable length arrays are a C99 feature">, InGroup; def warn_vla_used : Warning<"variable length array used">, InGroup, DefaultIgnore; def err_vla_in_sfinae : Error< "variable length array cannot be formed during template argument deduction">; def err_array_star_in_function_definition : Error< "variable length array must be bound in function definition">; def err_vla_decl_in_file_scope : Error< "variable length array declaration not allowed at file scope">; def err_vla_decl_has_static_storage : Error< "variable length array declaration cannot have 'static' storage duration">; def err_vla_decl_has_extern_linkage : Error< "variable length array declaration cannot have 'extern' linkage">; def ext_vla_folded_to_constant : ExtWarn< "variable length array folded to constant array as an extension">, InGroup; def err_vla_unsupported : Error< "variable length arrays are not supported for the current target">; def note_vla_unsupported : Note< "variable length arrays are not supported for the current target">; // C99 variably modified types def err_variably_modified_template_arg : Error< "variably modified type %0 cannot be used as a template argument">; def err_variably_modified_nontype_template_param : Error< "non-type template parameter of variably modified type %0">; def err_variably_modified_new_type : Error< "'new' cannot allocate object of variably modified type %0">; // C99 Designated Initializers def ext_designated_init : Extension< "designated initializers are a C99 feature">, InGroup; def err_array_designator_negative : Error< "array designator value '%0' is negative">; def err_array_designator_empty_range : Error< "array designator range [%0, %1] is empty">; def err_array_designator_non_array : Error< "array designator cannot initialize non-array type %0">; def err_array_designator_too_large : Error< "array designator index (%0) exceeds array bounds (%1)">; def err_field_designator_non_aggr : Error< "field designator cannot initialize a " "%select{non-struct, non-union|non-class}0 type %1">; def err_field_designator_unknown : Error< "field designator %0 does not refer to any field in type %1">; def err_field_designator_nonfield : Error< "field designator %0 does not refer to a non-static data member">; def note_field_designator_found : Note<"field designator refers here">; def err_designator_for_scalar_or_sizeless_init : Error< "designator in initializer for %select{scalar|indivisible sizeless}0 " "type %1">; def warn_initializer_overrides : Warning< "initializer %select{partially |}0overrides prior initialization of " "this subobject">, InGroup; def ext_initializer_overrides : ExtWarn, InGroup, SFINAEFailure; def err_initializer_overrides_destructed : Error< "initializer would partially override prior initialization of object of " "type %1 with non-trivial destruction">; def note_previous_initializer : Note< "previous initialization %select{|with side effects }0is here" "%select{| (side effects will not occur at run time)}0">; def err_designator_into_flexible_array_member : Error< "designator into flexible array member subobject">; def note_flexible_array_member : Note< "initialized flexible array member %0 is here">; def ext_flexible_array_init : Extension< "flexible array initialization is a GNU extension">, InGroup; // C++20 designated initializers def ext_cxx_designated_init : Extension< "designated initializers are a C++20 extension">, InGroup; def warn_cxx17_compat_designated_init : Warning< "designated initializers are incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def ext_designated_init_mixed : ExtWarn< "mixture of designated and non-designated initializers in the same " "initializer list is a C99 extension">, InGroup; def note_designated_init_mixed : Note< "first non-designated initializer is here">; def ext_designated_init_array : ExtWarn< "array designators are a C99 extension">, InGroup; def ext_designated_init_nested : ExtWarn< "nested designators are a C99 extension">, InGroup; def ext_designated_init_reordered : ExtWarn< "ISO C++ requires field designators to be specified in declaration order; " "field %1 will be initialized after field %0">, InGroup, SFINAEFailure; def note_previous_field_init : Note< "previous initialization for field %0 is here">; // Declarations. def ext_plain_complex : ExtWarn< "plain '_Complex' requires a type specifier; assuming '_Complex double'">; def ext_imaginary_constant : Extension< "imaginary constants are a GNU extension">, InGroup; def ext_integer_complex : Extension< "complex integer types are a GNU extension">, InGroup; def err_invalid_saturation_spec : Error<"'_Sat' specifier is only valid on " "'_Fract' or '_Accum', not '%0'">; def err_invalid_sign_spec : Error<"'%0' cannot be signed or unsigned">; def err_invalid_width_spec : Error< "'%select{|short|long|long long}0 %1' is invalid">; def err_invalid_complex_spec : Error<"'_Complex %0' is invalid">; def ext_auto_type_specifier : ExtWarn< "'auto' type specifier is a C++11 extension">, InGroup; def warn_auto_storage_class : Warning< "'auto' storage class specifier is redundant and incompatible with C++11">, InGroup, DefaultIgnore; def warn_deprecated_register : Warning< "'register' storage class specifier is deprecated " "and incompatible with C++17">, InGroup; def ext_register_storage_class : ExtWarn< "ISO C++17 does not allow 'register' storage class specifier">, DefaultError, InGroup; def err_invalid_decl_spec_combination : Error< "cannot combine with previous '%0' declaration specifier">; def err_invalid_vector_decl_spec_combination : Error< "cannot combine with previous '%0' declaration specifier. " "'__vector' must be first">; def err_invalid_pixel_decl_spec_combination : Error< "'__pixel' must be preceded by '__vector'. " "'%0' declaration specifier not allowed here">; def err_invalid_vector_bool_decl_spec : Error< "cannot use '%0' with '__vector bool'">; def err_invalid_vector_long_decl_spec : Error< "cannot use 'long' with '__vector'">; def err_invalid_vector_float_decl_spec : Error< "cannot use 'float' with '__vector'">; def err_invalid_vector_double_decl_spec : Error < "use of 'double' with '__vector' requires VSX support to be enabled " "(available on POWER7 or later)">; def err_invalid_vector_bool_int128_decl_spec : Error < "use of '__int128' with '__vector bool' requires VSX support enabled (on " "POWER10 or later)">; def err_invalid_vector_long_long_decl_spec : Error < "use of 'long long' with '__vector bool' requires VSX support (available on " "POWER7 or later) or extended Altivec support (available on POWER8 or later) " "to be enabled">; def err_invalid_vector_long_double_decl_spec : Error< "cannot use 'long double' with '__vector'">; def warn_vector_long_decl_spec_combination : Warning< "Use of 'long' with '__vector' is deprecated">, InGroup; def err_redeclaration_different_type : Error< "redeclaration of %0 with a different type%diff{: $ vs $|}1,2">; def err_bad_variable_name : Error< "%0 cannot be the name of a variable or data member">; def err_bad_parameter_name : Error< "%0 cannot be the name of a parameter">; def err_bad_parameter_name_template_id : Error< "parameter name cannot have template arguments">; def ext_parameter_name_omitted_c2x : ExtWarn< "omitting the parameter name in a function definition is a C2x extension">, InGroup; def err_anyx86_interrupt_attribute : Error< "%select{x86|x86-64}0 'interrupt' attribute only applies to functions that " "have %select{a 'void' return type|" "only a pointer parameter optionally followed by an integer parameter|" "a pointer as the first parameter|a %2 type as the second parameter}1">; def err_anyx86_interrupt_called : Error< "interrupt service routine cannot be called directly">; def warn_arm_interrupt_calling_convention : Warning< "call to function without interrupt attribute could clobber interruptee's VFP registers">, InGroup; def warn_interrupt_attribute_invalid : Warning< "%select{MIPS|MSP430|RISC-V}0 'interrupt' attribute only applies to " "functions that have %select{no parameters|a 'void' return type}1">, InGroup; def warn_riscv_repeated_interrupt_attribute : Warning< "repeated RISC-V 'interrupt' attribute">, InGroup; def note_riscv_repeated_interrupt_attribute : Note< "repeated RISC-V 'interrupt' attribute is here">; def warn_unused_parameter : Warning<"unused parameter %0">, InGroup, DefaultIgnore; def warn_unused_variable : Warning<"unused variable %0">, InGroup, DefaultIgnore; def warn_unused_local_typedef : Warning< "unused %select{typedef|type alias}0 %1">, InGroup, DefaultIgnore; def warn_unused_property_backing_ivar : Warning<"ivar %0 which backs the property is not " "referenced in this property's accessor">, InGroup, DefaultIgnore; def warn_unused_const_variable : Warning<"unused variable %0">, InGroup, DefaultIgnore; def warn_unused_exception_param : Warning<"unused exception parameter %0">, InGroup, DefaultIgnore; def warn_decl_in_param_list : Warning< "declaration of %0 will not be visible outside of this function">, InGroup; def warn_redefinition_in_param_list : Warning< "redefinition of %0 will not be visible outside of this function">, InGroup; def warn_empty_parens_are_function_decl : Warning< "empty parentheses interpreted as a function declaration">, InGroup; def warn_parens_disambiguated_as_function_declaration : Warning< "parentheses were disambiguated as a function declaration">, InGroup; def warn_parens_disambiguated_as_variable_declaration : Warning< "parentheses were disambiguated as redundant parentheses around declaration " "of variable named %0">, InGroup; def warn_redundant_parens_around_declarator : Warning< "redundant parentheses surrounding declarator">, InGroup>, DefaultIgnore; def note_additional_parens_for_variable_declaration : Note< "add a pair of parentheses to declare a variable">; def note_raii_guard_add_name : Note< "add a variable name to declare a %0 initialized with %1">; def note_function_style_cast_add_parentheses : Note< "add enclosing parentheses to perform a function-style cast">; def note_remove_parens_for_variable_declaration : Note< "remove parentheses to silence this warning">; def note_empty_parens_function_call : Note< "change this ',' to a ';' to call %0">; def note_empty_parens_default_ctor : Note< "remove parentheses to declare a variable">; def note_empty_parens_zero_initialize : Note< "replace parentheses with an initializer to declare a variable">; def warn_unused_function : Warning<"unused function %0">, InGroup, DefaultIgnore; def warn_unused_template : Warning<"unused %select{function|variable}0 template %1">, InGroup, DefaultIgnore; def warn_unused_member_function : Warning<"unused member function %0">, InGroup, DefaultIgnore; def warn_used_but_marked_unused: Warning<"%0 was marked unused but was used">, InGroup, DefaultIgnore; def warn_unneeded_internal_decl : Warning< "%select{function|variable}0 %1 is not needed and will not be emitted">, InGroup, DefaultIgnore; def warn_unneeded_static_internal_decl : Warning< "'static' function %0 declared in header file " "should be declared 'static inline'">, InGroup, DefaultIgnore; def warn_unneeded_member_function : Warning< "member function %0 is not needed and will not be emitted">, InGroup, DefaultIgnore; def warn_unused_private_field: Warning<"private field %0 is not used">, InGroup, DefaultIgnore; def warn_unused_lambda_capture: Warning<"lambda capture %0 is not " "%select{used|required to be captured for this use}1">, InGroup, DefaultIgnore; def warn_parameter_size: Warning< "%0 is a large (%1 bytes) pass-by-value argument; " "pass it by reference instead ?">, InGroup; def warn_return_value_size: Warning< "return value of %0 is a large (%1 bytes) pass-by-value object; " "pass it by reference instead ?">, InGroup; def warn_return_value_udt: Warning< "%0 has C-linkage specified, but returns user-defined type %1 which is " "incompatible with C">, InGroup; def warn_return_value_udt_incomplete: Warning< "%0 has C-linkage specified, but returns incomplete type %1 which could be " "incompatible with C">, InGroup; def warn_implicit_function_decl : Warning< "implicit declaration of function %0">, InGroup, DefaultIgnore; def ext_implicit_function_decl : ExtWarn< "implicit declaration of function %0 is invalid in C99">, InGroup; def note_function_suggestion : Note<"did you mean %0?">; def err_ellipsis_first_param : Error< "ISO C requires a named parameter before '...'">; def err_declarator_need_ident : Error<"declarator requires an identifier">; def err_language_linkage_spec_unknown : Error<"unknown linkage language">; def err_language_linkage_spec_not_ascii : Error< "string literal in language linkage specifier cannot have an " "encoding-prefix">; def ext_use_out_of_scope_declaration : ExtWarn< "use of out-of-scope declaration of %0%select{| whose type is not " "compatible with that of an implicit declaration}1">, InGroup>; def err_inline_non_function : Error< "'inline' can only appear on functions%select{| and non-local variables}0">; def err_noreturn_non_function : Error< "'_Noreturn' can only appear on functions">; def warn_qual_return_type : Warning< "'%0' type qualifier%s1 on return type %plural{1:has|:have}1 no effect">, InGroup, DefaultIgnore; def warn_deprecated_redundant_constexpr_static_def : Warning< "out-of-line definition of constexpr static data member is redundant " "in C++17 and is deprecated">, InGroup, DefaultIgnore; def warn_decl_shadow : Warning<"declaration shadows a %select{" "local variable|" "variable in %2|" "static data member of %2|" "field of %2|" "typedef in %2|" "type alias in %2}1">, InGroup, DefaultIgnore; def warn_decl_shadow_uncaptured_local : Warning, InGroup, DefaultIgnore; def warn_ctor_parm_shadows_field: Warning<"constructor parameter %0 shadows the field %1 of %2">, InGroup, DefaultIgnore; def warn_modifying_shadowing_decl : Warning<"modifying constructor parameter %0 that shadows a " "field of %1">, InGroup, DefaultIgnore; // C++ decomposition declarations def err_decomp_decl_context : Error< "decomposition declaration not permitted in this context">; def warn_cxx14_compat_decomp_decl : Warning< "decomposition declarations are incompatible with " "C++ standards before C++17">, DefaultIgnore, InGroup; def ext_decomp_decl : ExtWarn< "decomposition declarations are a C++17 extension">, InGroup; def ext_decomp_decl_cond : ExtWarn< "ISO C++17 does not permit structured binding declaration in a condition">, InGroup>; def err_decomp_decl_spec : Error< "decomposition declaration cannot be declared " "%plural{1:'%1'|:with '%1' specifiers}0">; def ext_decomp_decl_spec : ExtWarn< "decomposition declaration declared " "%plural{1:'%1'|:with '%1' specifiers}0 is a C++20 extension">, InGroup; def warn_cxx17_compat_decomp_decl_spec : Warning< "decomposition declaration declared " "%plural{1:'%1'|:with '%1' specifiers}0 " "is incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def err_decomp_decl_type : Error< "decomposition declaration cannot be declared with type %0; " "declared type must be 'auto' or reference to 'auto'">; def err_decomp_decl_parens : Error< "decomposition declaration cannot be declared with parentheses">; def err_decomp_decl_template : Error< "decomposition declaration template not supported">; def err_decomp_decl_not_alone : Error< "decomposition declaration must be the only declaration in its group">; def err_decomp_decl_requires_init : Error< "decomposition declaration %0 requires an initializer">; def err_decomp_decl_wrong_number_bindings : Error< "type %0 decomposes into %2 elements, but %select{only |}3%1 " "names were provided">; def err_decomp_decl_unbindable_type : Error< "cannot decompose %select{union|non-class, non-array}1 type %2">; def err_decomp_decl_multiple_bases_with_members : Error< "cannot decompose class type %1: " "%select{its base classes %2 and|both it and its base class}0 %3 " "have non-static data members">; def err_decomp_decl_ambiguous_base : Error< "cannot decompose members of ambiguous base class %1 of %0:%2">; def err_decomp_decl_inaccessible_base : Error< "cannot decompose members of inaccessible base class %1 of %0">, AccessControl; def err_decomp_decl_inaccessible_field : Error< "cannot decompose %select{private|protected}0 member %1 of %3">, AccessControl; def err_decomp_decl_lambda : Error< "cannot decompose lambda closure type">; def err_decomp_decl_anon_union_member : Error< "cannot decompose class type %0 because it has an anonymous " "%select{struct|union}1 member">; def err_decomp_decl_std_tuple_element_not_specialized : Error< "cannot decompose this type; 'std::tuple_element<%0>::type' " "does not name a type">; def err_decomp_decl_std_tuple_size_not_constant : Error< "cannot decompose this type; 'std::tuple_size<%0>::value' " "is not a valid integral constant expression">; def note_in_binding_decl_init : Note< "in implicit initialization of binding declaration %0">; def err_std_type_trait_not_class_template : Error< "unsupported standard library implementation: " "'std::%0' is not a class template">; // C++ using declarations def err_using_requires_qualname : Error< "using declaration requires a qualified name">; def err_using_typename_non_type : Error< "'typename' keyword used on a non-type">; def err_using_dependent_value_is_type : Error< "dependent using declaration resolved to type without 'typename'">; def err_using_decl_nested_name_specifier_is_not_class : Error< "using declaration in class refers into '%0', which is not a class">; def err_using_decl_nested_name_specifier_is_current_class : Error< "using declaration refers to its own class">; def err_using_decl_nested_name_specifier_is_not_base_class : Error< "using declaration refers into '%0', which is not a base class of %1">; def err_using_decl_constructor_not_in_direct_base : Error< "%0 is not a direct base of %1, cannot inherit constructors">; def err_using_decl_can_not_refer_to_class_member : Error< "using declaration cannot refer to class member">; def err_ambiguous_inherited_constructor : Error< "constructor of %0 inherited from multiple base class subobjects">; def note_ambiguous_inherited_constructor_using : Note< "inherited from base class %0 here">; def note_using_decl_class_member_workaround : Note< "use %select{an alias declaration|a typedef declaration|a reference|" "a const variable|a constexpr variable}0 instead">; def err_using_decl_can_not_refer_to_namespace : Error< "using declaration cannot refer to a namespace">; def err_using_decl_can_not_refer_to_scoped_enum : Error< "using declaration cannot refer to a scoped enumerator">; def err_using_decl_constructor : Error< "using declaration cannot refer to a constructor">; def warn_cxx98_compat_using_decl_constructor : Warning< "inheriting constructors are incompatible with C++98">, InGroup, DefaultIgnore; def err_using_decl_destructor : Error< "using declaration cannot refer to a destructor">; def err_using_decl_template_id : Error< "using declaration cannot refer to a template specialization">; def note_using_decl_target : Note<"target of using declaration">; def note_using_decl_conflict : Note<"conflicting declaration">; def err_using_decl_redeclaration : Error<"redeclaration of using declaration">; def err_using_decl_conflict : Error< "target of using declaration conflicts with declaration already in scope">; def err_using_decl_conflict_reverse : Error< "declaration conflicts with target of using declaration already in scope">; def note_using_decl : Note<"%select{|previous }0using declaration">; def err_using_decl_redeclaration_expansion : Error< "using declaration pack expansion at block scope produces multiple values">; def warn_access_decl_deprecated : Warning< "access declarations are deprecated; use using declarations instead">, InGroup; def err_access_decl : Error< "ISO C++11 does not allow access declarations; " "use using declarations instead">; def warn_deprecated_copy_operation : Warning< "definition of implicit copy %select{constructor|assignment operator}1 " "for %0 is deprecated because it has a user-declared copy " "%select{assignment operator|constructor}1">, InGroup, DefaultIgnore; def warn_deprecated_copy_dtor_operation : Warning< "definition of implicit copy %select{constructor|assignment operator}1 " "for %0 is deprecated because it has a user-declared destructor">, InGroup, DefaultIgnore; def warn_cxx17_compat_exception_spec_in_signature : Warning< "mangled name of %0 will change in C++17 due to non-throwing exception " "specification in function signature">, InGroup; def warn_global_constructor : Warning< "declaration requires a global constructor">, InGroup, DefaultIgnore; def warn_global_destructor : Warning< "declaration requires a global destructor">, InGroup, DefaultIgnore; def warn_exit_time_destructor : Warning< "declaration requires an exit-time destructor">, InGroup, DefaultIgnore; def err_invalid_thread : Error< "'%0' is only allowed on variable declarations">; def err_thread_non_global : Error< "'%0' variables must have global storage">; def err_thread_unsupported : Error< "thread-local storage is not supported for the current target">; // FIXME: Combine fallout warnings to just one warning. def warn_maybe_falloff_nonvoid_function : Warning< "non-void function does not return a value in all control paths">, InGroup; def warn_falloff_nonvoid_function : Warning< "non-void function does not return a value">, InGroup; def err_maybe_falloff_nonvoid_block : Error< "non-void block does not return a value in all control paths">; def err_falloff_nonvoid_block : Error< "non-void block does not return a value">; def warn_maybe_falloff_nonvoid_coroutine : Warning< "non-void coroutine does not return a value in all control paths">, InGroup; def warn_falloff_nonvoid_coroutine : Warning< "non-void coroutine does not return a value">, InGroup; def warn_suggest_noreturn_function : Warning< "%select{function|method}0 %1 could be declared with attribute 'noreturn'">, InGroup, DefaultIgnore; def warn_suggest_noreturn_block : Warning< "block could be declared with attribute 'noreturn'">, InGroup, DefaultIgnore; // Unreachable code. def warn_unreachable : Warning< "code will never be executed">, InGroup, DefaultIgnore; def warn_unreachable_break : Warning< "'break' will never be executed">, InGroup, DefaultIgnore; def warn_unreachable_return : Warning< "'return' will never be executed">, InGroup, DefaultIgnore; def warn_unreachable_loop_increment : Warning< "loop will run at most once (loop increment never executed)">, InGroup, DefaultIgnore; def note_unreachable_silence : Note< "silence by adding parentheses to mark code as explicitly dead">; /// Built-in functions. def ext_implicit_lib_function_decl : ExtWarn< "implicitly declaring library function '%0' with type %1">, InGroup; def note_include_header_or_declare : Note< "include the header <%0> or explicitly provide a declaration for '%1'">; def note_previous_builtin_declaration : Note<"%0 is a builtin with type %1">; def warn_implicit_decl_no_jmp_buf : Warning<"declaration of built-in function '%0' requires the declaration" " of the 'jmp_buf' type, commonly provided in the header .">, InGroup>; def warn_implicit_decl_requires_sysheader : Warning< "declaration of built-in function '%1' requires inclusion of the header <%0>">, InGroup; def warn_redecl_library_builtin : Warning< "incompatible redeclaration of library function %0">, InGroup>; def err_builtin_definition : Error<"definition of builtin function %0">; def err_builtin_redeclare : Error<"cannot redeclare builtin function %0">; def err_arm_invalid_specialreg : Error<"invalid special register for builtin">; def err_arm_invalid_coproc : Error<"coprocessor %0 must be configured as " "%select{GCP|CDE}1">; def err_invalid_cpu_supports : Error<"invalid cpu feature string for builtin">; def err_invalid_cpu_is : Error<"invalid cpu name for builtin">; def err_invalid_cpu_specific_dispatch_value : Error< "invalid option '%0' for %select{cpu_specific|cpu_dispatch}1">; def warn_builtin_unknown : Warning<"use of unknown builtin %0">, InGroup, DefaultError; def warn_cstruct_memaccess : Warning< "%select{destination for|source of|first operand of|second operand of}0 this " "%1 call is a pointer to record %2 that is not trivial to " "%select{primitive-default-initialize|primitive-copy}3">, InGroup; def note_nontrivial_field : Note< "field is non-trivial to %select{copy|default-initialize}0">; def err_non_trivial_c_union_in_invalid_context : Error< "cannot %select{" "use type %1 for a function/method parameter|" "use type %1 for function/method return|" "default-initialize an object of type %1|" "declare an automatic variable of type %1|" "copy-initialize an object of type %1|" "assign to a variable of type %1|" "construct an automatic compound literal of type %1|" "capture a variable of type %1|" "cannot use volatile type %1 where it causes an lvalue-to-rvalue conversion" "}3 " "since it %select{contains|is}2 a union that is non-trivial to " "%select{default-initialize|destruct|copy}0">; def note_non_trivial_c_union : Note< "%select{%2 has subobjects that are|%3 has type %2 that is}0 " "non-trivial to %select{default-initialize|destruct|copy}1">; def warn_dyn_class_memaccess : Warning< "%select{destination for|source of|first operand of|second operand of}0 this " "%1 call is a pointer to %select{|class containing a }2dynamic class %3; " "vtable pointer will be %select{overwritten|copied|moved|compared}4">, InGroup; def note_bad_memaccess_silence : Note< "explicitly cast the pointer to silence this warning">; def warn_sizeof_pointer_expr_memaccess : Warning< "'%0' call operates on objects of type %1 while the size is based on a " "different type %2">, InGroup; def warn_sizeof_pointer_expr_memaccess_note : Note< "did you mean to %select{dereference the argument to 'sizeof' (and multiply " "it by the number of elements)|remove the addressof in the argument to " "'sizeof' (and multiply it by the number of elements)|provide an explicit " "length}0?">; def warn_sizeof_pointer_type_memaccess : Warning< "argument to 'sizeof' in %0 call is the same pointer type %1 as the " "%select{destination|source}2; expected %3 or an explicit length">, InGroup; def warn_strlcpycat_wrong_size : Warning< "size argument in %0 call appears to be size of the source; " "expected the size of the destination">, InGroup>; def note_strlcpycat_wrong_size : Note< "change size argument to be the size of the destination">; def warn_memsize_comparison : Warning< "size argument in %0 call is a comparison">, InGroup>; def note_memsize_comparison_paren : Note< "did you mean to compare the result of %0 instead?">; def note_memsize_comparison_cast_silence : Note< "explicitly cast the argument to size_t to silence this warning">; def warn_suspicious_sizeof_memset : Warning< "%select{'size' argument to memset is '0'|" "setting buffer to a 'sizeof' expression}0" "; did you mean to transpose the last two arguments?">, InGroup; def note_suspicious_sizeof_memset_silence : Note< "%select{parenthesize the third argument|" "cast the second argument to 'int'}0 to silence">; def warn_suspicious_bzero_size : Warning<"'size' argument to bzero is '0'">, InGroup; def note_suspicious_bzero_size_silence : Note< "parenthesize the second argument to silence">; def warn_strncat_large_size : Warning< "the value of the size argument in 'strncat' is too large, might lead to a " "buffer overflow">, InGroup; def warn_strncat_src_size : Warning<"size argument in 'strncat' call appears " "to be size of the source">, InGroup; def warn_strncat_wrong_size : Warning< "the value of the size argument to 'strncat' is wrong">, InGroup; def note_strncat_wrong_size : Note< "change the argument to be the free space in the destination buffer minus " "the terminating null byte">; def warn_assume_side_effects : Warning< "the argument to %0 has side effects that will be discarded">, InGroup>; def warn_assume_attribute_string_unknown : Warning< "unknown assumption string '%0'; attribute is potentially ignored">, InGroup; def warn_assume_attribute_string_unknown_suggested : Warning< "unknown assumption string '%0' may be misspelled; attribute is potentially " "ignored, did you mean '%1'?">, InGroup; def warn_builtin_chk_overflow : Warning< "'%0' will always overflow; destination buffer has size %1," " but size argument is %2">, InGroup>; def warn_fortify_source_overflow : Warning, InGroup; def warn_fortify_source_size_mismatch : Warning< "'%0' size argument is too large; destination buffer has size %1," " but size argument is %2">, InGroup; def warn_fortify_source_format_overflow : Warning< "'%0' will always overflow; destination buffer has size %1," " but format string expands to at least %2">, InGroup; /// main() // static main() is not an error in C, just in C++. def warn_static_main : Warning<"'main' should not be declared static">, InGroup
; def err_static_main : Error<"'main' is not allowed to be declared static">; def err_inline_main : Error<"'main' is not allowed to be declared inline">; def ext_variadic_main : ExtWarn< "'main' is not allowed to be declared variadic">, InGroup
; def ext_noreturn_main : ExtWarn< "'main' is not allowed to be declared _Noreturn">, InGroup
; def note_main_remove_noreturn : Note<"remove '_Noreturn'">; def err_constexpr_main : Error< "'main' is not allowed to be declared %select{constexpr|consteval}0">; def err_deleted_main : Error<"'main' is not allowed to be deleted">; def err_mainlike_template_decl : Error<"%0 cannot be a template">; def err_main_returns_nonint : Error<"'main' must return 'int'">; def ext_main_returns_nonint : ExtWarn<"return type of 'main' is not 'int'">, InGroup; def note_main_change_return_type : Note<"change return type to 'int'">; def err_main_surplus_args : Error<"too many parameters (%0) for 'main': " "must be 0, 2, or 3">; def warn_main_one_arg : Warning<"only one parameter on 'main' declaration">, InGroup
; def err_main_arg_wrong : Error<"%select{first|second|third|fourth}0 " "parameter of 'main' (%select{argument count|argument array|environment|" "platform-specific data}0) must be of type %1">; def warn_main_returns_bool_literal : Warning<"bool literal returned from " "'main'">, InGroup
; def err_main_global_variable : Error<"main cannot be declared as global variable">; def warn_main_redefined : Warning<"variable named 'main' with external linkage " "has undefined behavior">, InGroup
; def ext_main_used : Extension< "ISO C++ does not allow 'main' to be used by a program">, InGroup
; /// parser diagnostics def ext_no_declarators : ExtWarn<"declaration does not declare anything">, InGroup; def err_no_declarators : Error<"declaration does not declare anything">; def ext_typedef_without_a_name : ExtWarn<"typedef requires a name">, InGroup; def err_typedef_not_identifier : Error<"typedef name must be an identifier">; def ext_non_c_like_anon_struct_in_typedef : ExtWarn< "anonymous non-C-compatible type given name for linkage purposes " "by %select{typedef|alias}0 declaration; " "add a tag name here">, InGroup>; def err_non_c_like_anon_struct_in_typedef : Error< "anonymous non-C-compatible type given name for linkage purposes " "by %select{typedef|alias}0 declaration after its linkage was computed; " "add a tag name here to establish linkage prior to definition">; def err_typedef_changes_linkage : Error< "unsupported: anonymous type given name for linkage purposes " "by %select{typedef|alias}0 declaration after its linkage was computed; " "add a tag name here to establish linkage prior to definition">; def note_non_c_like_anon_struct : Note< "type is not C-compatible due to this " "%select{base class|default member initializer|lambda expression|" "friend declaration|member declaration}0">; def note_typedef_for_linkage_here : Note< "type is given name %0 for linkage purposes by this " "%select{typedef|alias}1 declaration">; def err_statically_allocated_object : Error< "interface type cannot be statically allocated">; def err_object_cannot_be_passed_returned_by_value : Error< "interface type %1 cannot be %select{returned|passed}0 by value" "; did you forget * in %1?">; def err_parameters_retval_cannot_have_fp16_type : Error< "%select{parameters|function return value}0 cannot have __fp16 type; did you forget * ?">; def err_opencl_half_load_store : Error< "%select{loading directly from|assigning directly to}0 pointer to type %1 requires " "cl_khr_fp16. Use vector data %select{load|store}0 builtin functions instead">; def err_opencl_cast_to_half : Error<"casting to type %0 is not allowed">; def err_opencl_half_declaration : Error< "declaring variable of type %0 is not allowed">; def err_opencl_invalid_param : Error< "declaring function parameter of type %0 is not allowed%select{; did you forget * ?|}1">; def err_opencl_invalid_return : Error< "declaring function return value of type %0 is not allowed %select{; did you forget * ?|}1">; def warn_enum_value_overflow : Warning<"overflow in enumeration value">; def warn_pragma_options_align_reset_failed : Warning< "#pragma options align=reset failed: %0">, InGroup; def err_pragma_options_align_mac68k_target_unsupported : Error< "mac68k alignment pragma is not supported on this target">; def warn_pragma_pack_invalid_alignment : Warning< "expected #pragma pack parameter to be '1', '2', '4', '8', or '16'">, InGroup; def warn_pragma_pack_non_default_at_include : Warning< "non-default #pragma pack value changes the alignment of struct or union " "members in the included file">, InGroup, DefaultIgnore; def warn_pragma_pack_modified_after_include : Warning< "the current #pragma pack alignment value is modified in the included " "file">, InGroup; def warn_pragma_pack_no_pop_eof : Warning<"unterminated " "'#pragma pack (push, ...)' at end of file">, InGroup; def note_pragma_pack_here : Note< "previous '#pragma pack' directive that modifies alignment is here">; def note_pragma_pack_pop_instead_reset : Note< "did you intend to use '#pragma pack (pop)' instead of '#pragma pack()'?">; // Follow the Microsoft implementation. def warn_pragma_pack_show : Warning<"value of #pragma pack(show) == %0">; def warn_pragma_pack_pop_identifier_and_alignment : Warning< "specifying both a name and alignment to 'pop' is undefined">; def warn_pragma_pop_failed : Warning<"#pragma %0(pop, ...) failed: %1">, InGroup; def err_pragma_fc_pp_scope : Error< "'#pragma float_control push/pop' can only appear at file scope or namespace scope">; def err_pragma_fc_noprecise_requires_nofenv : Error< "'#pragma float_control(precise, off)' is illegal when fenv_access is enabled">; def err_pragma_fc_except_requires_precise : Error< "'#pragma float_control(except, on)' is illegal when precise is disabled">; def err_pragma_fc_noprecise_requires_noexcept : Error< "'#pragma float_control(precise, off)' is illegal when except is enabled">; def err_pragma_fenv_requires_precise : Error< "'#pragma STDC FENV_ACCESS ON' is illegal when precise is disabled">; def warn_cxx_ms_struct : Warning<"ms_struct may not produce Microsoft-compatible layouts for classes " "with base classes or virtual functions">, DefaultError, InGroup; def err_section_conflict : Error<"%0 causes a section type conflict with %1">; def err_no_base_classes : Error<"invalid use of '__super', %0 has no base classes">; def err_invalid_super_scope : Error<"invalid use of '__super', " "this keyword can only be used inside class or member function scope">; def err_super_in_lambda_unsupported : Error< "use of '__super' inside a lambda is unsupported">; def warn_pragma_unused_undeclared_var : Warning< "undeclared variable %0 used as an argument for '#pragma unused'">, InGroup; def warn_atl_uuid_deprecated : Warning< "specifying 'uuid' as an ATL attribute is deprecated; use __declspec instead">, InGroup; def warn_pragma_unused_expected_var_arg : Warning< "only variables can be arguments to '#pragma unused'">, InGroup; def err_pragma_push_visibility_mismatch : Error< "#pragma visibility push with no matching #pragma visibility pop">; def note_surrounding_namespace_ends_here : Note< "surrounding namespace with visibility attribute ends here">; def err_pragma_pop_visibility_mismatch : Error< "#pragma visibility pop with no matching #pragma visibility push">; def note_surrounding_namespace_starts_here : Note< "surrounding namespace with visibility attribute starts here">; def err_pragma_loop_invalid_argument_type : Error< "invalid argument of type %0; expected an integer type">; def err_pragma_loop_invalid_argument_value : Error< "%select{invalid value '%0'; must be positive|value '%0' is too large}1">; def err_pragma_loop_compatibility : Error< "%select{incompatible|duplicate}0 directives '%1' and '%2'">; def err_pragma_loop_precedes_nonloop : Error< "expected a for, while, or do-while loop to follow '%0'">; def err_pragma_attribute_matcher_subrule_contradicts_rule : Error< "redundant attribute subject matcher sub-rule '%0'; '%1' already matches " "those declarations">; def err_pragma_attribute_matcher_negated_subrule_contradicts_subrule : Error< "negated attribute subject matcher sub-rule '%0' contradicts sub-rule '%1'">; def err_pragma_attribute_invalid_matchers : Error< "attribute %0 can't be applied to %1">; def err_pragma_attribute_stack_mismatch : Error< "'#pragma clang attribute %select{%1.|}0pop' with no matching" " '#pragma clang attribute %select{%1.|}0push'">; def warn_pragma_attribute_unused : Warning< "unused attribute %0 in '#pragma clang attribute push' region">, InGroup; def note_pragma_attribute_region_ends_here : Note< "'#pragma clang attribute push' regions ends here">; def err_pragma_attribute_no_pop_eof : Error<"unterminated " "'#pragma clang attribute push' at end of file">; def note_pragma_attribute_applied_decl_here : Note< "when applied to this declaration">; def err_pragma_attr_attr_no_push : Error< "'#pragma clang attribute' attribute with no matching " "'#pragma clang attribute push'">; /// Objective-C parser diagnostics def err_duplicate_class_def : Error< "duplicate interface definition for class %0">; def err_undef_superclass : Error< "cannot find interface declaration for %0, superclass of %1">; def err_forward_superclass : Error< "attempting to use the forward class %0 as superclass of %1">; def err_no_nsconstant_string_class : Error< "cannot find interface declaration for %0">; def err_recursive_superclass : Error< "trying to recursively use %0 as superclass of %1">; def err_conflicting_aliasing_type : Error<"conflicting types for alias %0">; def warn_undef_interface : Warning<"cannot find interface declaration for %0">; def warn_duplicate_protocol_def : Warning< "duplicate protocol definition of %0 is ignored">, InGroup>; def err_protocol_has_circular_dependency : Error< "protocol has circular dependency">; def err_undeclared_protocol : Error<"cannot find protocol declaration for %0">; def warn_undef_protocolref : Warning<"cannot find protocol definition for %0">; def err_atprotocol_protocol : Error< "@protocol is using a forward protocol declaration of %0">; def warn_readonly_property : Warning< "attribute 'readonly' of property %0 restricts attribute " "'readwrite' of property inherited from %1">, InGroup; def warn_property_attribute : Warning< "'%1' attribute on property %0 does not match the property inherited from %2">, InGroup; def warn_property_types_are_incompatible : Warning< "property type %0 is incompatible with type %1 inherited from %2">, InGroup>; def warn_protocol_property_mismatch : Warning< "property %select{of type %1|with attribute '%1'|without attribute '%1'|with " "getter %1|with setter %1}0 was selected for synthesis">, InGroup>; def err_protocol_property_mismatch: Error; def err_undef_interface : Error<"cannot find interface declaration for %0">; def err_category_forward_interface : Error< "cannot define %select{category|class extension}0 for undefined class %1">; def err_class_extension_after_impl : Error< "cannot declare class extension for %0 after class implementation">; def note_implementation_declared : Note< "class implementation is declared here">; def note_while_in_implementation : Note< "detected while default synthesizing properties in class implementation">; def note_class_declared : Note< "class is declared here">; def note_receiver_class_declared : Note< "receiver is instance of class declared here">; def note_receiver_expr_here : Note< "receiver expression is here">; def note_receiver_is_id : Note< "receiver is treated with 'id' type for purpose of method lookup">; def note_suppressed_class_declare : Note< "class with specified objc_requires_property_definitions attribute is declared here">; def err_objc_root_class_subclass : Error< "objc_root_class attribute may only be specified on a root class declaration">; def err_restricted_superclass_mismatch : Error< "cannot subclass a class that was declared with the " "'objc_subclassing_restricted' attribute">; def err_class_stub_subclassing_mismatch : Error< "'objc_class_stub' attribute cannot be specified on a class that does not " "have the 'objc_subclassing_restricted' attribute">; def err_implementation_of_class_stub : Error< "cannot declare implementation of a class declared with the " "'objc_class_stub' attribute">; def warn_objc_root_class_missing : Warning< "class %0 defined without specifying a base class">, InGroup; def err_objc_runtime_visible_category : Error< "cannot implement a category for class %0 that is only visible via the " "Objective-C runtime">; def err_objc_runtime_visible_subclass : Error< "cannot implement subclass %0 of a superclass %1 that is only visible via the " "Objective-C runtime">; def note_objc_needs_superclass : Note< "add a super class to fix this problem">; def err_conflicting_super_class : Error<"conflicting super class name %0">; def err_dup_implementation_class : Error<"reimplementation of class %0">; def err_dup_implementation_category : Error< "reimplementation of category %1 for class %0">; def err_conflicting_ivar_type : Error< "instance variable %0 has conflicting type%diff{: $ vs $|}1,2">; def err_duplicate_ivar_declaration : Error< "instance variable is already declared">; def warn_on_superclass_use : Warning< "class implementation may not have super class">; def err_conflicting_ivar_bitwidth : Error< "instance variable %0 has conflicting bit-field width">; def err_conflicting_ivar_name : Error< "conflicting instance variable names: %0 vs %1">; def err_inconsistent_ivar_count : Error< "inconsistent number of instance variables specified">; def warn_undef_method_impl : Warning<"method definition for %0 not found">, InGroup>; def warn_objc_boxing_invalid_utf8_string : Warning< "string is ill-formed as UTF-8 and will become a null %0 when boxed">, InGroup; def err_objc_non_runtime_protocol_in_protocol_expr : Error< "cannot use a protocol declared 'objc_non_runtime_protocol' in a @protocol expression">; def err_objc_direct_on_protocol : Error< "'objc_direct' attribute cannot be applied to %select{methods|properties}0 " "declared in an Objective-C protocol">; def err_objc_direct_duplicate_decl : Error< "%select{|direct }0%select{method|property}1 declaration conflicts " "with previous %select{|direct }2declaration of %select{method|property}1 %3">; def err_objc_direct_impl_decl_mismatch : Error< "direct method was declared in %select{the primary interface|an extension|a category}0 " "but is implemented in %select{the primary interface|a category|a different category}1">; def err_objc_direct_missing_on_decl : Error< "direct method implementation was previously declared not direct">; def err_objc_direct_on_override : Error< "methods that %select{override superclass methods|implement protocol requirements}0 cannot be direct">; def err_objc_override_direct_method : Error< "cannot override a method that is declared direct by a superclass">; def warn_objc_direct_ignored : Warning< "%0 attribute isn't implemented by this Objective-C runtime">, InGroup; def warn_objc_direct_property_ignored : Warning< "direct attribute on property %0 ignored (not implemented by this Objective-C runtime)">, InGroup; def err_objc_direct_dynamic_property : Error< "direct property cannot be @dynamic">; def err_objc_direct_protocol_conformance : Error< "%select{category %1|class extension}0 cannot conform to protocol %2 because " "of direct members declared in interface %3">; def note_direct_member_here : Note<"direct member declared here">; def warn_conflicting_overriding_ret_types : Warning< "conflicting return type in " "declaration of %0%diff{: $ vs $|}1,2">, InGroup, DefaultIgnore; def warn_conflicting_ret_types : Warning< "conflicting return type in " "implementation of %0%diff{: $ vs $|}1,2">, InGroup; def warn_conflicting_overriding_ret_type_modifiers : Warning< "conflicting distributed object modifiers on return type " "in declaration of %0">, InGroup, DefaultIgnore; def warn_conflicting_ret_type_modifiers : Warning< "conflicting distributed object modifiers on return type " "in implementation of %0">, InGroup; def warn_non_covariant_overriding_ret_types : Warning< "conflicting return type in " "declaration of %0: %1 vs %2">, InGroup, DefaultIgnore; def warn_non_covariant_ret_types : Warning< "conflicting return type in " "implementation of %0: %1 vs %2">, InGroup, DefaultIgnore; def warn_conflicting_overriding_param_types : Warning< "conflicting parameter types in " "declaration of %0%diff{: $ vs $|}1,2">, InGroup, DefaultIgnore; def warn_conflicting_param_types : Warning< "conflicting parameter types in " "implementation of %0%diff{: $ vs $|}1,2">, InGroup; def warn_conflicting_param_modifiers : Warning< "conflicting distributed object modifiers on parameter type " "in implementation of %0">, InGroup; def warn_conflicting_overriding_param_modifiers : Warning< "conflicting distributed object modifiers on parameter type " "in declaration of %0">, InGroup, DefaultIgnore; def warn_non_contravariant_overriding_param_types : Warning< "conflicting parameter types in " "declaration of %0: %1 vs %2">, InGroup, DefaultIgnore; def warn_non_contravariant_param_types : Warning< "conflicting parameter types in " "implementation of %0: %1 vs %2">, InGroup, DefaultIgnore; def warn_conflicting_overriding_variadic :Warning< "conflicting variadic declaration of method and its " "implementation">, InGroup, DefaultIgnore; def warn_conflicting_variadic :Warning< "conflicting variadic declaration of method and its " "implementation">; def warn_category_method_impl_match:Warning< "category is implementing a method which will also be implemented" " by its primary class">, InGroup; def warn_implements_nscopying : Warning< "default assign attribute on property %0 which implements " "NSCopying protocol is not appropriate with -fobjc-gc[-only]">; def warn_multiple_method_decl : Warning<"multiple methods named %0 found">, InGroup; def warn_strict_multiple_method_decl : Warning< "multiple methods named %0 found">, InGroup, DefaultIgnore; def warn_accessor_property_type_mismatch : Warning< "type of property %0 does not match type of accessor %1">; def note_conv_function_declared_at : Note<"type conversion function declared here">; def note_method_declared_at : Note<"method %0 declared here">; def note_direct_method_declared_at : Note<"direct method %0 declared here">; def note_property_attribute : Note<"property %0 is declared " "%select{deprecated|unavailable|partial}1 here">; def err_setter_type_void : Error<"type of setter must be void">; def err_duplicate_method_decl : Error<"duplicate declaration of method %0">; def warn_duplicate_method_decl : Warning<"multiple declarations of method %0 found and ignored">, InGroup, DefaultIgnore; def warn_objc_cdirective_format_string : Warning<"using %0 directive in %select{NSString|CFString}1 " "which is being passed as a formatting argument to the formatting " "%select{method|CFfunction}2">, InGroup, DefaultIgnore; def err_objc_var_decl_inclass : Error<"cannot declare variable inside @interface or @protocol">; def err_missing_method_context : Error< "missing context for method declaration">; def err_objc_property_attr_mutually_exclusive : Error< "property attributes '%0' and '%1' are mutually exclusive">; def err_objc_property_requires_object : Error< "property with '%0' attribute must be of object type">; def warn_objc_property_assign_on_object : Warning< "'assign' property of object type may become a dangling reference; consider using 'unsafe_unretained'">, InGroup, DefaultIgnore; def warn_objc_property_no_assignment_attribute : Warning< "no 'assign', 'retain', or 'copy' attribute is specified - " "'assign' is assumed">, InGroup; def warn_objc_isa_use : Warning< "direct access to Objective-C's isa is deprecated in favor of " "object_getClass()">, InGroup; def warn_objc_isa_assign : Warning< "assignment to Objective-C's isa is deprecated in favor of " "object_setClass()">, InGroup; def warn_objc_pointer_masking : Warning< "bitmasking for introspection of Objective-C object pointers is strongly " "discouraged">, InGroup; def warn_objc_pointer_masking_performSelector : Warning, InGroup; def warn_objc_property_default_assign_on_object : Warning< "default property attribute 'assign' not appropriate for object">, InGroup; def warn_property_attr_mismatch : Warning< "property attribute in class extension does not match the primary class">, InGroup; def warn_property_implicitly_mismatched : Warning < "primary property declaration is implicitly strong while redeclaration " "in class extension is weak">, InGroup>; def warn_objc_property_copy_missing_on_block : Warning< "'copy' attribute must be specified for the block property " "when -fobjc-gc-only is specified">; def warn_objc_property_retain_of_block : Warning< "retain'ed block property does not copy the block " "- use copy attribute instead">, InGroup; def warn_objc_readonly_property_has_setter : Warning< "setter cannot be specified for a readonly property">, InGroup; def warn_atomic_property_rule : Warning< "writable atomic property %0 cannot pair a synthesized %select{getter|setter}1 " "with a user defined %select{getter|setter}2">, InGroup>; def note_atomic_property_fixup_suggest : Note<"setter and getter must both be " "synthesized, or both be user defined,or the property must be nonatomic">; def err_atomic_property_nontrivial_assign_op : Error< "atomic property of reference type %0 cannot have non-trivial assignment" " operator">; def warn_cocoa_naming_owned_rule : Warning< "property follows Cocoa naming" " convention for returning 'owned' objects">, InGroup>; def err_cocoa_naming_owned_rule : Error< "property follows Cocoa naming" " convention for returning 'owned' objects">; def note_cocoa_naming_declare_family : Note< "explicitly declare getter %objcinstance0 with '%1' to return an 'unowned' " "object">; def warn_auto_synthesizing_protocol_property :Warning< "auto property synthesis will not synthesize property %0" " declared in protocol %1">, InGroup>; def note_add_synthesize_directive : Note< "add a '@synthesize' directive">; def warn_no_autosynthesis_shared_ivar_property : Warning < "auto property synthesis will not synthesize property " "%0 because it cannot share an ivar with another synthesized property">, InGroup; def warn_no_autosynthesis_property : Warning< "auto property synthesis will not synthesize property " "%0 because it is 'readwrite' but it will be synthesized 'readonly' " "via another property">, InGroup; def warn_autosynthesis_property_in_superclass : Warning< "auto property synthesis will not synthesize property " "%0; it will be implemented by its superclass, use @dynamic to " "acknowledge intention">, InGroup; def warn_autosynthesis_property_ivar_match :Warning< "autosynthesized property %0 will use %select{|synthesized}1 instance variable " "%2, not existing instance variable %3">, InGroup>; def warn_missing_explicit_synthesis : Warning < "auto property synthesis is synthesizing property not explicitly synthesized">, InGroup>, DefaultIgnore; def warn_property_getter_owning_mismatch : Warning< "property declared as returning non-retained objects" "; getter returning retained objects">; def warn_property_redecl_getter_mismatch : Warning< "getter name mismatch between property redeclaration (%1) and its original " "declaration (%0)">, InGroup; def err_property_setter_ambiguous_use : Error< "synthesized properties %0 and %1 both claim setter %2 -" " use of this setter will cause unexpected behavior">; def warn_default_atomic_custom_getter_setter : Warning< "atomic by default property %0 has a user defined %select{getter|setter}1 " "(property should be marked 'atomic' if this is intended)">, InGroup, DefaultIgnore; def err_use_continuation_class : Error< "illegal redeclaration of property in class extension %0" " (attribute must be 'readwrite', while its primary must be 'readonly')">; def err_type_mismatch_continuation_class : Error< "type of property %0 in class extension does not match " "property type in primary class">; def err_use_continuation_class_redeclaration_readwrite : Error< "illegal redeclaration of 'readwrite' property in class extension %0" " (perhaps you intended this to be a 'readwrite' redeclaration of a " "'readonly' public property?)">; def err_continuation_class : Error<"class extension has no primary class">; def err_property_type : Error<"property cannot have array or function type %0">; def err_missing_property_context : Error< "missing context for property implementation declaration">; def err_bad_property_decl : Error< "property implementation must have its declaration in interface %0 or one of " "its extensions">; def err_category_property : Error< "property declared in category %0 cannot be implemented in " "class implementation">; def note_property_declare : Note< "property declared here">; def note_protocol_property_declare : Note< "it could also be property " "%select{of type %1|without attribute '%1'|with attribute '%1'|with getter " "%1|with setter %1}0 declared here">; def note_property_synthesize : Note< "property synthesized here">; def err_synthesize_category_decl : Error< "@synthesize not allowed in a category's implementation">; def err_synthesize_on_class_property : Error< "@synthesize not allowed on a class property %0">; def err_missing_property_interface : Error< "property implementation in a category with no category declaration">; def err_bad_category_property_decl : Error< "property implementation must have its declaration in the category %0">; def err_bad_property_context : Error< "property implementation must be in a class or category implementation">; def err_missing_property_ivar_decl : Error< "synthesized property %0 must either be named the same as a compatible" " instance variable or must explicitly name an instance variable">; def err_arc_perform_selector_retains : Error< "performSelector names a selector which retains the object">; def warn_arc_perform_selector_leaks : Warning< "performSelector may cause a leak because its selector is unknown">, InGroup>; def warn_dealloc_in_category : Warning< "-dealloc is being overridden in a category">, InGroup; def err_gc_weak_property_strong_type : Error< "weak attribute declared on a __strong type property in GC mode">; def warn_arc_repeated_use_of_weak : Warning < "weak %select{variable|property|implicit property|instance variable}0 %1 is " "accessed multiple times in this %select{function|method|block|lambda}2 " "but may be unpredictably set to nil; assign to a strong variable to keep " "the object alive">, InGroup, DefaultIgnore; def warn_implicitly_retains_self : Warning < "block implicitly retains 'self'; explicitly mention 'self' to indicate " "this is intended behavior">, InGroup>, DefaultIgnore; def warn_arc_possible_repeated_use_of_weak : Warning < "weak %select{variable|property|implicit property|instance variable}0 %1 may " "be accessed multiple times in this %select{function|method|block|lambda}2 " "and may be unpredictably set to nil; assign to a strong variable to keep " "the object alive">, InGroup, DefaultIgnore; def note_arc_weak_also_accessed_here : Note< "also accessed here">; def err_incomplete_synthesized_property : Error< "cannot synthesize property %0 with incomplete type %1">; def err_property_ivar_type : Error< "type of property %0 (%1) does not match type of instance variable %2 (%3)">; def err_property_accessor_type : Error< "type of property %0 (%1) does not match type of accessor %2 (%3)">; def err_ivar_in_superclass_use : Error< "property %0 attempting to use instance variable %1 declared in super class %2">; def err_weak_property : Error< "existing instance variable %1 for __weak property %0 must be __weak">; def err_strong_property : Error< "existing instance variable %1 for strong property %0 may not be __weak">; def err_dynamic_property_ivar_decl : Error< "dynamic property cannot have instance variable specification">; def err_duplicate_ivar_use : Error< "synthesized properties %0 and %1 both claim instance variable %2">; def err_property_implemented : Error<"property %0 is already implemented">; def warn_objc_missing_super_call : Warning< "method possibly missing a [super %0] call">, InGroup; def err_dealloc_bad_result_type : Error< "dealloc return type must be correctly specified as 'void' under ARC, " "instead of %0">; def warn_undeclared_selector : Warning< "undeclared selector %0">, InGroup, DefaultIgnore; def warn_undeclared_selector_with_typo : Warning< "undeclared selector %0; did you mean %1?">, InGroup, DefaultIgnore; def warn_implicit_atomic_property : Warning< "property is assumed atomic by default">, InGroup, DefaultIgnore; def note_auto_readonly_iboutlet_fixup_suggest : Note< "property should be changed to be readwrite">; def warn_auto_readonly_iboutlet_property : Warning< "readonly IBOutlet property %0 when auto-synthesized may " "not work correctly with 'nib' loader">, InGroup>; def warn_auto_implicit_atomic_property : Warning< "property is assumed atomic when auto-synthesizing the property">, InGroup, DefaultIgnore; def warn_unimplemented_selector: Warning< "no method with selector %0 is implemented in this translation unit">, InGroup, DefaultIgnore; def warn_unimplemented_protocol_method : Warning< "method %0 in protocol %1 not implemented">, InGroup; def warn_multiple_selectors: Warning< "several methods with selector %0 of mismatched types are found " "for the @selector expression">, InGroup, DefaultIgnore; def err_direct_selector_expression : Error< "@selector expression formed with direct selector %0">; def warn_potentially_direct_selector_expression : Warning< "@selector expression formed with potentially direct selector %0">, InGroup; def warn_strict_potentially_direct_selector_expression : Warning< warn_potentially_direct_selector_expression.Text>, InGroup, DefaultIgnore; def err_objc_kindof_nonobject : Error< "'__kindof' specifier cannot be applied to non-object type %0">; def err_objc_kindof_wrong_position : Error< "'__kindof' type specifier must precede the declarator">; def err_objc_method_unsupported_param_ret_type : Error< "%0 %select{parameter|return}1 type is unsupported; " "support for vector types for this target is introduced in %2">; def warn_messaging_unqualified_id : Warning< "messaging unqualified id">, DefaultIgnore, InGroup>; def err_messaging_unqualified_id_with_direct_method : Error< "messaging unqualified id with a method that is possibly direct">; def err_messaging_super_with_direct_method : Error< "messaging super with a direct method">; def err_messaging_class_with_direct_method : Error< "messaging a Class with a method that is possibly direct">; // C++ declarations def err_static_assert_expression_is_not_constant : Error< "static_assert expression is not an integral constant expression">; def err_static_assert_failed : Error<"static_assert failed%select{ %1|}0">; def err_static_assert_requirement_failed : Error< "static_assert failed due to requirement '%0'%select{ %2|}1">; def ext_inline_variable : ExtWarn< "inline variables are a C++17 extension">, InGroup; def warn_cxx14_compat_inline_variable : Warning< "inline variables are incompatible with C++ standards before C++17">, DefaultIgnore, InGroup; def warn_inline_namespace_reopened_noninline : Warning< "inline namespace reopened as a non-inline namespace">, InGroup; def err_inline_namespace_mismatch : Error< "non-inline namespace cannot be reopened as inline">; def err_unexpected_friend : Error< "friends can only be classes or functions">; def ext_enum_friend : ExtWarn< "befriending enumeration type %0 is a C++11 extension">, InGroup; def warn_cxx98_compat_enum_friend : Warning< "befriending enumeration type %0 is incompatible with C++98">, InGroup, DefaultIgnore; def ext_nonclass_type_friend : ExtWarn< "non-class friend type %0 is a C++11 extension">, InGroup; def warn_cxx98_compat_nonclass_type_friend : Warning< "non-class friend type %0 is incompatible with C++98">, InGroup, DefaultIgnore; def err_friend_is_member : Error< "friends cannot be members of the declaring class">; def warn_cxx98_compat_friend_is_member : Warning< "friend declaration naming a member of the declaring class is incompatible " "with C++98">, InGroup, DefaultIgnore; def ext_unelaborated_friend_type : ExtWarn< "unelaborated friend declaration is a C++11 extension; specify " "'%select{struct|interface|union|class|enum}0' to befriend %1">, InGroup; def warn_cxx98_compat_unelaborated_friend_type : Warning< "befriending %1 without '%select{struct|interface|union|class|enum}0' " "keyword is incompatible with C++98">, InGroup, DefaultIgnore; def err_qualified_friend_no_match : Error< "friend declaration of %0 does not match any declaration in %1">; def err_introducing_special_friend : Error< "%plural{[0,2]:must use a qualified name when declaring|3:cannot declare}0" " a %select{constructor|destructor|conversion operator|deduction guide}0 " "as a friend">; def err_tagless_friend_type_template : Error< "friend type templates must use an elaborated type">; def err_no_matching_local_friend : Error< "no matching function found in local scope">; def err_no_matching_local_friend_suggest : Error< "no matching function %0 found in local scope; did you mean %3?">; def err_partial_specialization_friend : Error< "partial specialization cannot be declared as a friend">; def err_qualified_friend_def : Error< "friend function definition cannot be qualified with '%0'">; def err_friend_def_in_local_class : Error< "friend function cannot be defined in a local class">; def err_friend_not_first_in_declaration : Error< "'friend' must appear first in a non-function declaration">; def err_using_decl_friend : Error< "cannot befriend target of using declaration">; def warn_template_qualified_friend_unsupported : Warning< "dependent nested name specifier '%0' for friend class declaration is " "not supported; turning off access control for %1">, InGroup; def warn_template_qualified_friend_ignored : Warning< "dependent nested name specifier '%0' for friend template declaration is " "not supported; ignoring this friend declaration">, InGroup; def ext_friend_tag_redecl_outside_namespace : ExtWarn< "unqualified friend declaration referring to type outside of the nearest " "enclosing namespace is a Microsoft extension; add a nested name specifier">, InGroup; def err_pure_friend : Error<"friend declaration cannot have a pure-specifier">; def err_invalid_base_in_interface : Error< "interface type cannot inherit from " "%select{struct|non-public interface|class}0 %1">; def err_abstract_type_in_decl : Error< "%select{return|parameter|variable|field|instance variable|" "synthesized instance variable}0 type %1 is an abstract class">; def err_allocation_of_abstract_type : Error< "allocating an object of abstract class type %0">; def err_throw_abstract_type : Error< "cannot throw an object of abstract type %0">; def err_array_of_abstract_type : Error<"array of abstract class type %0">; def err_capture_of_abstract_type : Error< "by-copy capture of value of abstract type %0">; def err_capture_of_incomplete_or_sizeless_type : Error< "by-copy capture of variable %0 with %select{incomplete|sizeless}1 type %2">; def err_capture_default_non_local : Error< "non-local lambda expression cannot have a capture-default">; def err_multiple_final_overriders : Error< "virtual function %q0 has more than one final overrider in %1">; def note_final_overrider : Note<"final overrider of %q0 in %1">; def err_type_defined_in_type_specifier : Error< "%0 cannot be defined in a type specifier">; def err_type_defined_in_result_type : Error< "%0 cannot be defined in the result type of a function">; def err_type_defined_in_param_type : Error< "%0 cannot be defined in a parameter type">; def err_type_defined_in_alias_template : Error< "%0 cannot be defined in a type alias template">; def err_type_defined_in_condition : Error< "%0 cannot be defined in a condition">; def err_type_defined_in_enum : Error< "%0 cannot be defined in an enumeration">; def note_pure_virtual_function : Note< "unimplemented pure virtual method %0 in %1">; def note_pure_qualified_call_kext : Note< "qualified call to %0::%1 is treated as a virtual call to %1 due to -fapple-kext">; def err_deleted_decl_not_first : Error< "deleted definition must be first declaration">; def err_deleted_override : Error< "deleted function %0 cannot override a non-deleted function">; def err_non_deleted_override : Error< "non-deleted function %0 cannot override a deleted function">; def err_consteval_override : Error< "consteval function %0 cannot override a non-consteval function">; def err_non_consteval_override : Error< "non-consteval function %0 cannot override a consteval function">; def warn_weak_vtable : Warning< "%0 has no out-of-line virtual method definitions; its vtable will be " "emitted in every translation unit">, InGroup>, DefaultIgnore; def warn_weak_template_vtable : Warning< "explicit template instantiation %0 will emit a vtable in every " "translation unit">, InGroup>, DefaultIgnore; def ext_using_undefined_std : ExtWarn< "using directive refers to implicitly-defined namespace 'std'">; // C++ exception specifications def err_exception_spec_in_typedef : Error< "exception specifications are not allowed in %select{typedefs|type aliases}0">; def err_distant_exception_spec : Error< "exception specifications are not allowed beyond a single level " "of indirection">; def err_incomplete_in_exception_spec : Error< "%select{|pointer to |reference to }0incomplete type %1 is not allowed " "in exception specification">; def err_sizeless_in_exception_spec : Error< "%select{|reference to }0sizeless type %1 is not allowed " "in exception specification">; def ext_incomplete_in_exception_spec : ExtWarn, InGroup; def err_rref_in_exception_spec : Error< "rvalue reference type %0 is not allowed in exception specification">; def err_mismatched_exception_spec : Error< "exception specification in declaration does not match previous declaration">; def ext_mismatched_exception_spec : ExtWarn, InGroup; def err_override_exception_spec : Error< "exception specification of overriding function is more lax than " "base version">; def ext_override_exception_spec : ExtWarn, InGroup; def err_incompatible_exception_specs : Error< "target exception specification is not superset of source">; def warn_incompatible_exception_specs : Warning< err_incompatible_exception_specs.Text>, InGroup; def err_deep_exception_specs_differ : Error< "exception specifications of %select{return|argument}0 types differ">; def warn_deep_exception_specs_differ : Warning< err_deep_exception_specs_differ.Text>, InGroup; def err_missing_exception_specification : Error< "%0 is missing exception specification '%1'">; def ext_missing_exception_specification : ExtWarn< err_missing_exception_specification.Text>, InGroup>; def ext_ms_missing_exception_specification : ExtWarn< err_missing_exception_specification.Text>, InGroup; def err_noexcept_needs_constant_expression : Error< "argument to noexcept specifier must be a constant expression">; def err_exception_spec_not_parsed : Error< "exception specification is not available until end of class definition">; def err_exception_spec_cycle : Error< "exception specification of %0 uses itself">; def err_exception_spec_incomplete_type : Error< "exception specification needed for member of incomplete class %0">; def warn_wasm_dynamic_exception_spec_ignored : ExtWarn< "dynamic exception specifications with types are currently ignored in wasm">, InGroup; // C++ access checking def err_class_redeclared_with_different_access : Error< "%0 redeclared with '%1' access">; def err_access : Error< "%1 is a %select{private|protected}0 member of %3">, AccessControl; def ext_ms_using_declaration_inaccessible : ExtWarn< "using declaration referring to inaccessible member '%0' (which refers " "to accessible member '%1') is a Microsoft compatibility extension">, AccessControl, InGroup; def err_access_ctor : Error< "calling a %select{private|protected}0 constructor of class %2">, AccessControl; def ext_rvalue_to_reference_access_ctor : Extension< "C++98 requires an accessible copy constructor for class %2 when binding " "a reference to a temporary; was %select{private|protected}0">, AccessControl, InGroup; def err_access_base_ctor : Error< // The ERRORs represent other special members that aren't constructors, in // hopes that someone will bother noticing and reporting if they appear "%select{base class|inherited virtual base class}0 %1 has %select{private|" "protected}3 %select{default |copy |move |*ERROR* |*ERROR* " "|*ERROR*|}2constructor">, AccessControl; def err_access_field_ctor : Error< // The ERRORs represent other special members that aren't constructors, in // hopes that someone will bother noticing and reporting if they appear "field of type %0 has %select{private|protected}2 " "%select{default |copy |move |*ERROR* |*ERROR* |*ERROR* |}1constructor">, AccessControl; def err_access_friend_function : Error< "friend function %1 is a %select{private|protected}0 member of %3">, AccessControl; def err_access_dtor : Error< "calling a %select{private|protected}1 destructor of class %0">, AccessControl; def err_access_dtor_base : Error<"base class %0 has %select{private|protected}1 destructor">, AccessControl; def err_access_dtor_vbase : Error<"inherited virtual base class %1 has " "%select{private|protected}2 destructor">, AccessControl; def err_access_dtor_temp : Error<"temporary of type %0 has %select{private|protected}1 destructor">, AccessControl; def err_access_dtor_exception : Error<"exception object of type %0 has %select{private|protected}1 " "destructor">, AccessControl; def err_access_dtor_field : Error<"field of type %1 has %select{private|protected}2 destructor">, AccessControl; def err_access_dtor_var : Error<"variable of type %1 has %select{private|protected}2 destructor">, AccessControl; def err_access_dtor_ivar : Error<"instance variable of type %0 has %select{private|protected}1 " "destructor">, AccessControl; def note_previous_access_declaration : Note< "previously declared '%1' here">; def note_access_natural : Note< "%select{|implicitly }1declared %select{private|protected}0 here">; def note_access_constrained_by_path : Note< "constrained by %select{|implicitly }1%select{private|protected}0" " inheritance here">; def note_access_protected_restricted_noobject : Note< "must name member using the type of the current context %0">; def note_access_protected_restricted_ctordtor : Note< "protected %select{constructor|destructor}0 can only be used to " "%select{construct|destroy}0 a base class subobject">; def note_access_protected_restricted_object : Note< "can only access this member on an object of type %0">; def warn_cxx98_compat_sfinae_access_control : Warning< "substitution failure due to access control is incompatible with C++98">, InGroup, DefaultIgnore, NoSFINAE; // C++ name lookup def err_incomplete_nested_name_spec : Error< "incomplete type %0 named in nested name specifier">; def err_dependent_nested_name_spec : Error< "nested name specifier for a declaration cannot depend on a template " "parameter">; def err_nested_name_member_ref_lookup_ambiguous : Error< "lookup of %0 in member access expression is ambiguous">; def ext_nested_name_member_ref_lookup_ambiguous : ExtWarn< "lookup of %0 in member access expression is ambiguous; using member of %1">, InGroup; def note_ambig_member_ref_object_type : Note< "lookup in the object type %0 refers here">; def note_ambig_member_ref_scope : Note< "lookup from the current scope refers here">; def err_qualified_member_nonclass : Error< "qualified member access refers to a member in %0">; def err_incomplete_member_access : Error< "member access into incomplete type %0">; def err_incomplete_type : Error< "incomplete type %0 where a complete type is required">; def warn_cxx98_compat_enum_nested_name_spec : Warning< "enumeration type in nested name specifier is incompatible with C++98">, InGroup, DefaultIgnore; def err_nested_name_spec_is_not_class : Error< "%0 cannot appear before '::' because it is not a class" "%select{ or namespace|, namespace, or enumeration}1; did you mean ':'?">; def ext_nested_name_spec_is_enum : ExtWarn< "use of enumeration in a nested name specifier is a C++11 extension">, InGroup; def err_out_of_line_qualified_id_type_names_constructor : Error< "qualified reference to %0 is a constructor name rather than a " "%select{template name|type}1 in this context">; def ext_out_of_line_qualified_id_type_names_constructor : ExtWarn< "ISO C++ specifies that " "qualified reference to %0 is a constructor name rather than a " "%select{template name|type}1 in this context, despite preceding " "%select{'typename'|'template'}2 keyword">, SFINAEFailure, InGroup>; // C++ class members def err_storageclass_invalid_for_member : Error< "storage class specified for a member declaration">; def err_mutable_function : Error<"'mutable' cannot be applied to functions">; def err_mutable_reference : Error<"'mutable' cannot be applied to references">; def ext_mutable_reference : ExtWarn< "'mutable' on a reference type is a Microsoft extension">, InGroup; def err_mutable_const : Error<"'mutable' and 'const' cannot be mixed">; def err_mutable_nonmember : Error< "'mutable' can only be applied to member variables">; def err_virtual_in_union : Error< "unions cannot have virtual functions">; def err_virtual_non_function : Error< "'virtual' can only appear on non-static member functions">; def err_virtual_out_of_class : Error< "'virtual' can only be specified inside the class definition">; def err_virtual_member_function_template : Error< "'virtual' cannot be specified on member function templates">; def err_static_overrides_virtual : Error< "'static' member function %0 overrides a virtual function in a base class">; def err_explicit_non_function : Error< "'explicit' can only appear on non-static member functions">; def err_explicit_out_of_class : Error< "'explicit' can only be specified inside the class definition">; def err_explicit_non_ctor_or_conv_function : Error< "'explicit' can only be applied to a constructor or conversion function">; def err_static_not_bitfield : Error<"static member %0 cannot be a bit-field">; def err_static_out_of_line : Error< "'static' can only be specified inside the class definition">; def ext_static_out_of_line : ExtWarn< err_static_out_of_line.Text>, InGroup; def err_storage_class_for_static_member : Error< "static data member definition cannot specify a storage class">; def err_typedef_not_bitfield : Error<"typedef member %0 cannot be a bit-field">; def err_not_integral_type_bitfield : Error< "bit-field %0 has non-integral type %1">; def err_not_integral_type_anon_bitfield : Error< "anonymous bit-field has non-integral type %0">; def err_anon_bitfield_qualifiers : Error< "anonymous bit-field cannot have qualifiers">; def err_member_function_initialization : Error< "initializer on function does not look like a pure-specifier">; def err_non_virtual_pure : Error< "%0 is not virtual and cannot be declared pure">; def ext_pure_function_definition : ExtWarn< "function definition with pure-specifier is a Microsoft extension">, InGroup; def err_qualified_member_of_unrelated : Error< "%q0 is not a member of class %1">; def err_member_function_call_bad_cvr : Error< "'this' argument to member function %0 has type %1, but function is not marked " "%select{const|restrict|const or restrict|volatile|const or volatile|" "volatile or restrict|const, volatile, or restrict}2">; def err_member_function_call_bad_ref : Error< "'this' argument to member function %0 is an %select{lvalue|rvalue}1, " "but function has %select{non-const lvalue|rvalue}2 ref-qualifier">; def err_member_function_call_bad_type : Error< "cannot initialize object parameter of type %0 with an expression " "of type %1">; def warn_call_to_pure_virtual_member_function_from_ctor_dtor : Warning< "call to pure virtual member function %0 has undefined behavior; " "overrides of %0 in subclasses are not available in the " "%select{constructor|destructor}1 of %2">, InGroup; def select_special_member_kind : TextSubstitution< "%select{default constructor|copy constructor|move constructor|" "copy assignment operator|move assignment operator|destructor}0">; def note_member_declared_at : Note<"member is declared here">; def note_ivar_decl : Note<"instance variable is declared here">; def note_bitfield_decl : Note<"bit-field is declared here">; def note_implicit_param_decl : Note<"%0 is an implicit parameter">; def note_member_synthesized_at : Note< "in %select{implicit|defaulted}0 %sub{select_special_member_kind}1 for %2 " "first required here">; def note_comparison_synthesized_at : Note< "in defaulted %sub{select_defaulted_comparison_kind}0 for %1 " "first required here">; def err_missing_default_ctor : Error< "%select{constructor for %1 must explicitly initialize the|" "implicit default constructor for %1 must explicitly initialize the|" "cannot use constructor inherited from base class %4;}0 " "%select{base class|member}2 %3 %select{which|which|of %1}0 " "does not have a default constructor">; def note_due_to_dllexported_class : Note< "due to %0 being dllexported%select{|; try compiling in C++11 mode}1">; def err_illegal_union_or_anon_struct_member : Error< "%select{anonymous struct|union}0 member %1 has a non-trivial " "%sub{select_special_member_kind}2">; def warn_frame_address : Warning< "calling '%0' with a nonzero argument is unsafe">, InGroup, DefaultIgnore; def warn_cxx98_compat_nontrivial_union_or_anon_struct_member : Warning< "%select{anonymous struct|union}0 member %1 with a non-trivial " "%sub{select_special_member_kind}2 is incompatible with C++98">, InGroup, DefaultIgnore; def note_nontrivial_virtual_dtor : Note< "destructor for %0 is not trivial because it is virtual">; def note_nontrivial_has_virtual : Note< "because type %0 has a virtual %select{member function|base class}1">; def note_nontrivial_no_def_ctor : Note< "because %select{base class of |field of |}0type %1 has no " "default constructor">; def note_user_declared_ctor : Note< "implicit default constructor suppressed by user-declared constructor">; def note_nontrivial_no_copy : Note< "because no %select{<>|constructor|constructor|assignment operator|" "assignment operator|<>}2 can be used to " "%select{<>|copy|move|copy|move|<>}2 " "%select{base class|field|an object}0 of type %3">; def note_nontrivial_user_provided : Note< "because %select{base class of |field of |}0type %1 has a user-provided " "%sub{select_special_member_kind}2">; def note_nontrivial_default_member_init : Note< "because field %0 has an initializer">; def note_nontrivial_param_type : Note< "because its parameter is %diff{of type $, not $|of the wrong type}2,3">; def note_nontrivial_default_arg : Note<"because it has a default argument">; def note_nontrivial_variadic : Note<"because it is a variadic function">; def note_nontrivial_subobject : Note< "because the function selected to %select{construct|copy|move|copy|move|" "destroy}2 %select{base class|field}0 of type %1 is not trivial">; def note_nontrivial_objc_ownership : Note< "because type %0 has a member with %select{no|no|__strong|__weak|" "__autoreleasing}1 ownership">; /// Selector for a TagTypeKind value. def select_tag_type_kind : TextSubstitution< "%select{struct|interface|union|class|enum}0">; def err_static_data_member_not_allowed_in_anon_struct : Error< "static data member %0 not allowed in anonymous " "%sub{select_tag_type_kind}1">; def ext_static_data_member_in_union : ExtWarn< "static data member %0 in union is a C++11 extension">, InGroup; def warn_cxx98_compat_static_data_member_in_union : Warning< "static data member %0 in union is incompatible with C++98">, InGroup, DefaultIgnore; def ext_union_member_of_reference_type : ExtWarn< "union member %0 has reference type %1, which is a Microsoft extension">, InGroup; def err_union_member_of_reference_type : Error< "union member %0 has reference type %1">; def ext_anonymous_struct_union_qualified : Extension< "anonymous %select{struct|union}0 cannot be '%1'">; def err_different_return_type_for_overriding_virtual_function : Error< "virtual function %0 has a different return type " "%diff{($) than the function it overrides (which has return type $)|" "than the function it overrides}1,2">; def note_overridden_virtual_function : Note< "overridden virtual function is here">; def err_conflicting_overriding_cc_attributes : Error< "virtual function %0 has different calling convention attributes " "%diff{($) than the function it overrides (which has calling convention $)|" "than the function it overrides}1,2">; def warn_overriding_method_missing_noescape : Warning< "parameter of overriding method should be annotated with " "__attribute__((noescape))">, InGroup; def note_overridden_marked_noescape : Note< "parameter of overridden method is annotated with __attribute__((noescape))">; def note_cat_conform_to_noescape_prot : Note< "%select{category|class extension}0 conforms to protocol %1 which defines method %2">; def err_covariant_return_inaccessible_base : Error< "invalid covariant return for virtual function: %1 is a " "%select{private|protected}2 base class of %0">, AccessControl; def err_covariant_return_ambiguous_derived_to_base_conv : Error< "return type of virtual function %3 is not covariant with the return type of " "the function it overrides (ambiguous conversion from derived class " "%0 to base class %1:%2)">; def err_covariant_return_not_derived : Error< "return type of virtual function %0 is not covariant with the return type of " "the function it overrides (%1 is not derived from %2)">; def err_covariant_return_incomplete : Error< "return type of virtual function %0 is not covariant with the return type of " "the function it overrides (%1 is incomplete)">; def err_covariant_return_type_different_qualifications : Error< "return type of virtual function %0 is not covariant with the return type of " "the function it overrides (%1 has different qualifiers than %2)">; def err_covariant_return_type_class_type_more_qualified : Error< "return type of virtual function %0 is not covariant with the return type of " "the function it overrides (class type %1 is more qualified than class " "type %2">; // C++ implicit special member functions def note_in_declaration_of_implicit_special_member : Note< "while declaring the implicit %sub{select_special_member_kind}1" " for %0">; // C++ constructors def err_constructor_cannot_be : Error<"constructor cannot be declared '%0'">; def err_invalid_qualified_constructor : Error< "'%0' qualifier is not allowed on a constructor">; def err_ref_qualifier_constructor : Error< "ref-qualifier '%select{&&|&}0' is not allowed on a constructor">; def err_constructor_return_type : Error< "constructor cannot have a return type">; def err_constructor_redeclared : Error<"constructor cannot be redeclared">; def err_constructor_byvalue_arg : Error< "copy constructor must pass its first argument by reference">; def warn_no_constructor_for_refconst : Warning< "%select{struct|interface|union|class|enum}0 %1 does not declare any " "constructor to initialize its non-modifiable members">; def note_refconst_member_not_initialized : Note< "%select{const|reference}0 member %1 will never be initialized">; def ext_ms_explicit_constructor_call : ExtWarn< "explicit constructor calls are a Microsoft extension">, InGroup; // C++ destructors def err_destructor_not_member : Error< "destructor must be a non-static member function">; def err_destructor_cannot_be : Error<"destructor cannot be declared '%0'">; def err_invalid_qualified_destructor : Error< "'%0' qualifier is not allowed on a destructor">; def err_ref_qualifier_destructor : Error< "ref-qualifier '%select{&&|&}0' is not allowed on a destructor">; def err_destructor_return_type : Error<"destructor cannot have a return type">; def err_destructor_redeclared : Error<"destructor cannot be redeclared">; def err_destructor_with_params : Error<"destructor cannot have any parameters">; def err_destructor_variadic : Error<"destructor cannot be variadic">; def ext_destructor_typedef_name : ExtWarn< "destructor cannot be declared using a %select{typedef|type alias}1 %0 " "of the class name">, DefaultError, InGroup>; def err_undeclared_destructor_name : Error< "undeclared identifier %0 in destructor name">; def err_destructor_name : Error< "expected the class name after '~' to name the enclosing class">; def err_destructor_name_nontype : Error< "identifier %0 after '~' in destructor name does not name a type">; def err_destructor_expr_mismatch : Error< "identifier %0 in object destruction expression does not name the type " "%1 of the object being destroyed">; def err_destructor_expr_nontype : Error< "identifier %0 in object destruction expression does not name a type">; def err_destructor_expr_type_mismatch : Error< "destructor type %0 in object destruction expression does not match the " "type %1 of the object being destroyed">; def note_destructor_type_here : Note< "type %0 found by destructor name lookup">; def note_destructor_nontype_here : Note< "non-type declaration found by destructor name lookup">; def ext_dtor_named_in_wrong_scope : Extension< "ISO C++ requires the name after '::~' to be found in the same scope as " "the name before '::~'">, InGroup; def ext_qualified_dtor_named_in_lexical_scope : ExtWarn< "qualified destructor name only found in lexical scope; omit the qualifier " "to find this type name by unqualified lookup">, InGroup; def ext_dtor_name_ambiguous : Extension< "ISO C++ considers this destructor name lookup to be ambiguous">, InGroup; def err_destroy_attr_on_non_static_var : Error< "%select{no_destroy|always_destroy}0 attribute can only be applied to a" " variable with static or thread storage duration">; def err_destructor_template : Error< "destructor cannot be declared as a template">; // C++ initialization def err_init_conversion_failed : Error< "cannot initialize %select{a variable|a parameter|template parameter|" "return object|statement expression result|an " "exception object|a member subobject|an array element|a new value|a value|a " "base class|a constructor delegation|a vector element|a block element|a " "block element|a complex element|a lambda capture|a compound literal " "initializer|a related result|a parameter of CF audited function}0 " "%diff{of type $ with an %select{rvalue|lvalue}2 of type $|" "with an %select{rvalue|lvalue}2 of incompatible type}1,3" "%select{|: different classes%diff{ ($ vs $)|}5,6" "|: different number of parameters (%5 vs %6)" "|: type mismatch at %ordinal5 parameter%diff{ ($ vs $)|}6,7" "|: different return type%diff{ ($ vs $)|}5,6" "|: different qualifiers (%5 vs %6)" "|: different exception specifications}4">; def note_forward_class_conversion : Note<"%0 is not defined, but forward " "declared here; conversion would be valid if it was derived from %1">; def err_lvalue_to_rvalue_ref : Error<"rvalue reference %diff{to type $ cannot " "bind to lvalue of type $|cannot bind to incompatible lvalue}0,1">; def err_lvalue_reference_bind_to_initlist : Error< "%select{non-const|volatile}0 lvalue reference to type %1 cannot bind to an " "initializer list temporary">; def err_lvalue_reference_bind_to_temporary : Error< "%select{non-const|volatile}0 lvalue reference %diff{to type $ cannot bind " "to a temporary of type $|cannot bind to incompatible temporary}1,2">; def err_lvalue_reference_bind_to_unrelated : Error< "%select{non-const|volatile}0 lvalue reference " "%diff{to type $ cannot bind to a value of unrelated type $|" "cannot bind to a value of unrelated type}1,2">; def err_reference_bind_drops_quals : Error< "binding reference %diff{of type $ to value of type $|to value}0,1 " "%select{drops %3 qualifier%plural{1:|2:|4:|:s}4|changes address space|" "not permitted due to incompatible qualifiers}2">; def err_reference_bind_failed : Error< "reference %diff{to %select{type|incomplete type}1 $ could not bind to an " "%select{rvalue|lvalue}2 of type $|could not bind to %select{rvalue|lvalue}2 of " "incompatible type}0,3">; def err_reference_bind_temporary_addrspace : Error< "reference of type %0 cannot bind to a temporary object because of " "address space mismatch">; def err_reference_bind_init_list : Error< "reference to type %0 cannot bind to an initializer list">; def err_init_list_bad_dest_type : Error< "%select{|non-aggregate }0type %1 cannot be initialized with an initializer " "list">; def warn_cxx20_compat_aggregate_init_with_ctors : Warning< "aggregate initialization of type %0 with user-declared constructors " "is incompatible with C++20">, DefaultIgnore, InGroup; def err_reference_bind_to_bitfield : Error< "%select{non-const|volatile}0 reference cannot bind to " "bit-field%select{| %1}2">; def err_reference_bind_to_vector_element : Error< "%select{non-const|volatile}0 reference cannot bind to vector element">; def err_reference_bind_to_matrix_element : Error< "%select{non-const|volatile}0 reference cannot bind to matrix element">; def err_reference_var_requires_init : Error< "declaration of reference variable %0 requires an initializer">; def err_reference_without_init : Error< "reference to type %0 requires an initializer">; def note_value_initialization_here : Note< "in value-initialization of type %0 here">; def err_reference_has_multiple_inits : Error< "reference cannot be initialized with multiple values">; def err_init_non_aggr_init_list : Error< "initialization of non-aggregate type %0 with an initializer list">; def err_init_reference_member_uninitialized : Error< "reference member of type %0 uninitialized">; def note_uninit_reference_member : Note< "uninitialized reference member is here">; def warn_field_is_uninit : Warning<"field %0 is uninitialized when used here">, InGroup; def warn_base_class_is_uninit : Warning< "base class %0 is uninitialized when used here to access %q1">, InGroup; def warn_reference_field_is_uninit : Warning< "reference %0 is not yet bound to a value when used here">, InGroup; def note_uninit_in_this_constructor : Note< "during field initialization in %select{this|the implicit default}0 " "constructor">; def warn_static_self_reference_in_init : Warning< "static variable %0 is suspiciously used within its own initialization">, InGroup; def warn_uninit_self_reference_in_init : Warning< "variable %0 is uninitialized when used within its own initialization">, InGroup; def warn_uninit_self_reference_in_reference_init : Warning< "reference %0 is not yet bound to a value when used within its own" " initialization">, InGroup; def warn_uninit_var : Warning< "variable %0 is uninitialized when %select{used here|captured by block}1">, InGroup, DefaultIgnore; def warn_sometimes_uninit_var : Warning< "variable %0 is %select{used|captured}1 uninitialized whenever " "%select{'%3' condition is %select{true|false}4|" "'%3' loop %select{is entered|exits because its condition is false}4|" "'%3' loop %select{condition is true|exits because its condition is false}4|" "switch %3 is taken|" "its declaration is reached|" "%3 is called}2">, InGroup, DefaultIgnore; def warn_maybe_uninit_var : Warning< "variable %0 may be uninitialized when " "%select{used here|captured by block}1">, InGroup, DefaultIgnore; def note_var_declared_here : Note<"variable %0 is declared here">; def note_uninit_var_use : Note< "%select{uninitialized use occurs|variable is captured by block}0 here">; def warn_uninit_byref_blockvar_captured_by_block : Warning< "block pointer variable %0 is %select{uninitialized|null}1 when captured by " "block">, InGroup, DefaultIgnore; def note_block_var_fixit_add_initialization : Note< "did you mean to use __block %0?">; def note_in_omitted_aggregate_initializer : Note< "in implicit initialization of %select{" "array element %1 with omitted initializer|" "field %1 with omitted initializer|" "trailing array elements in runtime-sized array new}0">; def note_in_reference_temporary_list_initializer : Note< "in initialization of temporary of type %0 created to " "list-initialize this reference">; def note_var_fixit_add_initialization : Note< "initialize the variable %0 to silence this warning">; def note_uninit_fixit_remove_cond : Note< "remove the %select{'%1' if its condition|condition if it}0 " "is always %select{false|true}2">; def err_init_incomplete_type : Error<"initialization of incomplete type %0">; def err_list_init_in_parens : Error< "cannot initialize %select{non-class|reference}0 type %1 with a " "parenthesized initializer list">; def warn_uninit_const_reference : Warning< "variable %0 is uninitialized when passed as a const reference argument " "here">, InGroup, DefaultIgnore; def warn_unsequenced_mod_mod : Warning< "multiple unsequenced modifications to %0">, InGroup; def warn_unsequenced_mod_use : Warning< "unsequenced modification and access to %0">, InGroup; def select_initialized_entity_kind : TextSubstitution< "%select{copying variable|copying parameter|initializing template parameter|" "returning object|initializing statement expression result|" "throwing object|copying member subobject|copying array element|" "allocating object|copying temporary|initializing base subobject|" "initializing vector element|capturing value}0">; def err_temp_copy_no_viable : Error< "no viable constructor %sub{select_initialized_entity_kind}0 of type %1">; def ext_rvalue_to_reference_temp_copy_no_viable : Extension< "no viable constructor %sub{select_initialized_entity_kind}0 of type %1; " "C++98 requires a copy constructor when binding a reference to a temporary">, InGroup; def err_temp_copy_ambiguous : Error< "ambiguous constructor call when %sub{select_initialized_entity_kind}0 " "of type %1">; def err_temp_copy_deleted : Error< "%sub{select_initialized_entity_kind}0 of type %1 " "invokes deleted constructor">; def err_temp_copy_incomplete : Error< "copying a temporary object of incomplete type %0">; def warn_cxx98_compat_temp_copy : Warning< "%sub{select_initialized_entity_kind}1 " "of type %2 when binding a reference to a temporary would %select{invoke " "an inaccessible constructor|find no viable constructor|find ambiguous " "constructors|invoke a deleted constructor}0 in C++98">, InGroup, DefaultIgnore; def err_selected_explicit_constructor : Error< "chosen constructor is explicit in copy-initialization">; def note_explicit_ctor_deduction_guide_here : Note< "explicit %select{constructor|deduction guide}0 declared here">; // C++11 decltype def err_decltype_in_declarator : Error< "'decltype' cannot be used to name a declaration">; // C++11 auto def warn_cxx98_compat_auto_type_specifier : Warning< "'auto' type specifier is incompatible with C++98">, InGroup, DefaultIgnore; def err_auto_variable_cannot_appear_in_own_initializer : Error< "variable %0 declared with deduced type %1 " "cannot appear in its own initializer">; def err_binding_cannot_appear_in_own_initializer : Error< "binding %0 cannot appear in the initializer of its own " "decomposition declaration">; def err_illegal_decl_array_of_auto : Error< "'%0' declared as array of %1">; def err_new_array_of_auto : Error< "cannot allocate array of 'auto'">; def err_auto_not_allowed : Error< "%select{'auto'|'decltype(auto)'|'__auto_type'|" "use of " "%select{class template|function template|variable template|alias template|" "template template parameter|concept|template}2 %3 requires template " "arguments; argument deduction}0 not allowed " "%select{in function prototype" "|in non-static struct member|in struct member" "|in non-static union member|in union member" "|in non-static class member|in interface member" "|in exception declaration|in template parameter until C++17|in block literal" "|in template argument|in typedef|in type alias|in function return type" "|in conversion function type|here|in lambda parameter" "|in type allocated by 'new'|in K&R-style function parameter" "|in template parameter|in friend declaration|in function prototype that is " "not a function declaration|in requires expression parameter}1">; def err_dependent_deduced_tst : Error< "typename specifier refers to " "%select{class template|function template|variable template|alias template|" "template template parameter|template}0 member in %1; " "argument deduction not allowed here">; def err_deduced_tst : Error< "typename specifier refers to " "%select{class template|function template|variable template|alias template|" "template template parameter|template}0; argument deduction not allowed " "here">; def err_auto_not_allowed_var_inst : Error< "'auto' variable template instantiation is not allowed">; def err_auto_var_requires_init : Error< "declaration of variable %0 with deduced type %1 requires an initializer">; def err_auto_new_requires_ctor_arg : Error< "new expression for type %0 requires a constructor argument">; def ext_auto_new_list_init : Extension< "ISO C++ standards before C++17 do not allow new expression for " "type %0 to use list-initialization">, InGroup; def err_auto_var_init_no_expression : Error< "initializer for variable %0 with type %1 is empty">; def err_auto_var_init_multiple_expressions : Error< "initializer for variable %0 with type %1 contains multiple expressions">; def err_auto_var_init_paren_braces : Error< "cannot deduce type for variable %1 with type %2 from " "%select{parenthesized|nested}0 initializer list">; def err_auto_new_ctor_multiple_expressions : Error< "new expression for type %0 contains multiple constructor arguments">; def err_auto_missing_trailing_return : Error< "'auto' return without trailing return type; deduced return types are a " "C++14 extension">; def err_deduced_return_type : Error< "deduced return types are a C++14 extension">; def err_trailing_return_without_auto : Error< "function with trailing return type must specify return type 'auto', not %0">; def err_trailing_return_in_parens : Error< "trailing return type may not be nested within parentheses">; def err_auto_var_deduction_failure : Error< "variable %0 with type %1 has incompatible initializer of type %2">; def err_auto_var_deduction_failure_from_init_list : Error< "cannot deduce actual type for variable %0 with type %1 from initializer list">; def err_auto_new_deduction_failure : Error< "new expression for type %0 has incompatible constructor argument of type %1">; def err_auto_inconsistent_deduction : Error< "deduced conflicting types %diff{($ vs $) |}0,1" "for initializer list element type">; def err_auto_different_deductions : Error< "%select{'auto'|'decltype(auto)'|'__auto_type'|template arguments}0 " "deduced as %1 in declaration of %2 and " "deduced as %3 in declaration of %4">; def err_auto_non_deduced_not_alone : Error< "%select{function with deduced return type|" "declaration with trailing return type}0 " "must be the only declaration in its group">; def err_implied_std_initializer_list_not_found : Error< "cannot deduce type of initializer list because std::initializer_list was " "not found; include ">; def err_malformed_std_initializer_list : Error< "std::initializer_list must be a class template with a single type parameter">; def err_auto_init_list_from_c : Error< "cannot use __auto_type with initializer list in C">; def err_auto_bitfield : Error< "cannot pass bit-field as __auto_type initializer in C">; // C++1y decltype(auto) type def err_decltype_auto_invalid : Error< "'decltype(auto)' not allowed here">; def err_decltype_auto_cannot_be_combined : Error< "'decltype(auto)' cannot be combined with other type specifiers">; def err_decltype_auto_function_declarator_not_declaration : Error< "'decltype(auto)' can only be used as a return type " "in a function declaration">; def err_decltype_auto_compound_type : Error< "cannot form %select{pointer to|reference to|array of}0 'decltype(auto)'">; def err_decltype_auto_initializer_list : Error< "cannot deduce 'decltype(auto)' from initializer list">; // C++17 deduced class template specialization types def err_deduced_class_template_compound_type : Error< "cannot %select{form pointer to|form reference to|form array of|" "form function returning|use parentheses when declaring variable with}0 " "deduced class template specialization type">; def err_deduced_non_class_template_specialization_type : Error< "%select{|function template|variable template|alias template|" "template template parameter|concept|template}0 %1 requires template " "arguments; argument deduction only allowed for class templates">; def err_deduced_class_template_ctor_ambiguous : Error< "ambiguous deduction for template arguments of %0">; def err_deduced_class_template_ctor_no_viable : Error< "no viable constructor or deduction guide for deduction of " "template arguments of %0">; def err_deduced_class_template_incomplete : Error< "template %0 has no definition and no %select{|viable }1deduction guides " "for deduction of template arguments">; def err_deduced_class_template_deleted : Error< "class template argument deduction for %0 selected a deleted constructor">; def err_deduced_class_template_explicit : Error< "class template argument deduction for %0 selected an explicit " "%select{constructor|deduction guide}1 for copy-list-initialization">; def err_deduction_guide_no_trailing_return_type : Error< "deduction guide declaration without trailing return type">; def err_deduction_guide_bad_trailing_return_type : Error< "deduced type %1 of deduction guide is not %select{|written as }2" "a specialization of template %0">; def err_deduction_guide_with_complex_decl : Error< "cannot specify any part of a return type in the " "declaration of a deduction guide">; def err_deduction_guide_invalid_specifier : Error< "deduction guide cannot be declared '%0'">; def err_deduction_guide_name_not_class_template : Error< "cannot specify deduction guide for " "%select{|function template|variable template|alias template|" "template template parameter|concept|dependent template name}0 %1">; def err_deduction_guide_wrong_scope : Error< "deduction guide must be declared in the same scope as template %q0">; def err_deduction_guide_defines_function : Error< "deduction guide cannot have a function definition">; def err_deduction_guide_redeclared : Error< "redeclaration of deduction guide">; def err_deduction_guide_specialized : Error<"deduction guide cannot be " "%select{explicitly instantiated|explicitly specialized}0">; def err_deduction_guide_template_not_deducible : Error< "deduction guide template contains " "%select{a template parameter|template parameters}0 that cannot be " "deduced">; def err_deduction_guide_wrong_access : Error< "deduction guide has different access from the corresponding " "member template">; def note_deduction_guide_template_access : Note< "member template declared %0 here">; def note_deduction_guide_access : Note< "deduction guide declared %0 by intervening access specifier">; def warn_cxx14_compat_class_template_argument_deduction : Warning< "class template argument deduction is incompatible with C++ standards " "before C++17%select{|; for compatibility, use explicit type name %1}0">, InGroup, DefaultIgnore; def warn_ctad_maybe_unsupported : Warning< "%0 may not intend to support class template argument deduction">, InGroup, DefaultIgnore; def note_suppress_ctad_maybe_unsupported : Note< "add a deduction guide to suppress this warning">; // C++14 deduced return types def err_auto_fn_deduction_failure : Error< "cannot deduce return type %0 from returned value of type %1">; def err_auto_fn_different_deductions : Error< "'%select{auto|decltype(auto)}0' in return type deduced as %1 here but " "deduced as %2 in earlier return statement">; def err_auto_fn_used_before_defined : Error< "function %0 with deduced return type cannot be used before it is defined">; def err_auto_fn_no_return_but_not_auto : Error< "cannot deduce return type %0 for function with no return statements">; def err_auto_fn_return_void_but_not_auto : Error< "cannot deduce return type %0 from omitted return expression">; def err_auto_fn_return_init_list : Error< "cannot deduce return type from initializer list">; def err_auto_fn_virtual : Error< "function with deduced return type cannot be virtual">; def warn_cxx11_compat_deduced_return_type : Warning< "return type deduction is incompatible with C++ standards before C++14">, InGroup, DefaultIgnore; // C++11 override control def override_keyword_only_allowed_on_virtual_member_functions : Error< "only virtual member functions can be marked '%0'">; def override_keyword_hides_virtual_member_function : Error< "non-virtual member function marked '%0' hides virtual member " "%select{function|functions}1">; def err_function_marked_override_not_overriding : Error< "%0 marked 'override' but does not override any member functions">; def warn_destructor_marked_not_override_overriding : TextSubstitution < "%0 overrides a destructor but is not marked 'override'">; def warn_function_marked_not_override_overriding : TextSubstitution < "%0 overrides a member function but is not marked 'override'">; def warn_inconsistent_destructor_marked_not_override_overriding : Warning < "%sub{warn_destructor_marked_not_override_overriding}0">, InGroup, DefaultIgnore; def warn_inconsistent_function_marked_not_override_overriding : Warning < "%sub{warn_function_marked_not_override_overriding}0">, InGroup; def warn_suggest_destructor_marked_not_override_overriding : Warning < "%sub{warn_destructor_marked_not_override_overriding}0">, InGroup, DefaultIgnore; def warn_suggest_function_marked_not_override_overriding : Warning < "%sub{warn_function_marked_not_override_overriding}0">, InGroup, DefaultIgnore; def err_class_marked_final_used_as_base : Error< "base %0 is marked '%select{final|sealed}1'">; def warn_abstract_final_class : Warning< "abstract class is marked '%select{final|sealed}0'">, InGroup; def warn_final_dtor_non_final_class : Warning< "class with destructor marked '%select{final|sealed}0' cannot be inherited from">, InGroup; def note_final_dtor_non_final_class_silence : Note< "mark %0 as '%select{final|sealed}1' to silence this warning">; // C++11 attributes def err_repeat_attribute : Error<"%0 attribute cannot be repeated">; // C++11 final def err_final_function_overridden : Error< "declaration of %0 overrides a '%select{final|sealed}1' function">; // C++11 scoped enumerations def err_enum_invalid_underlying : Error< "non-integral type %0 is an invalid underlying type">; def err_enumerator_too_large : Error< "enumerator value is not representable in the underlying type %0">; def ext_enumerator_too_large : Extension< "enumerator value is not representable in the underlying type %0">, InGroup; def err_enumerator_wrapped : Error< "enumerator value %0 is not representable in the underlying type %1">; def err_enum_redeclare_type_mismatch : Error< "enumeration redeclared with different underlying type %0 (was %1)">; def err_enum_redeclare_fixed_mismatch : Error< "enumeration previously declared with %select{non|}0fixed underlying type">; def err_enum_redeclare_scoped_mismatch : Error< "enumeration previously declared as %select{un|}0scoped">; def err_only_enums_have_underlying_types : Error< "only enumeration types have underlying types">; def err_underlying_type_of_incomplete_enum : Error< "cannot determine underlying type of incomplete enumeration type %0">; // C++11 delegating constructors def err_delegating_ctor : Error< "delegating constructors are permitted only in C++11">; def warn_cxx98_compat_delegating_ctor : Warning< "delegating constructors are incompatible with C++98">, InGroup, DefaultIgnore; def err_delegating_initializer_alone : Error< "an initializer for a delegating constructor must appear alone">; def warn_delegating_ctor_cycle : Warning< "constructor for %0 creates a delegation cycle">, DefaultError, InGroup; def note_it_delegates_to : Note<"it delegates to">; def note_which_delegates_to : Note<"which delegates to">; // C++11 range-based for loop def err_for_range_decl_must_be_var : Error< "for range declaration must declare a variable">; def err_for_range_storage_class : Error< "loop variable %0 may not be declared %select{'extern'|'static'|" "'__private_extern__'|'auto'|'register'|'constexpr'|'thread_local'}1">; def err_type_defined_in_for_range : Error< "types may not be defined in a for range declaration">; def err_for_range_deduction_failure : Error< "cannot use type %0 as a range">; def err_for_range_incomplete_type : Error< "cannot use incomplete type %0 as a range">; def err_for_range_iter_deduction_failure : Error< "cannot use type %0 as an iterator">; def ext_for_range_begin_end_types_differ : ExtWarn< "'begin' and 'end' returning different types (%0 and %1) is a C++17 extension">, InGroup; def warn_for_range_begin_end_types_differ : Warning< "'begin' and 'end' returning different types (%0 and %1) is incompatible " "with C++ standards before C++17">, InGroup, DefaultIgnore; def note_in_for_range: Note< "when looking up '%select{begin|end}0' function for range expression " "of type %1">; def err_for_range_invalid: Error< "invalid range expression of type %0; no viable '%select{begin|end}1' " "function available">; def note_for_range_member_begin_end_ignored : Note< "member is not a candidate because range type %0 has no '%select{end|begin}1' member">; def err_range_on_array_parameter : Error< "cannot build range expression with array function parameter %0 since " "parameter with array type %1 is treated as pointer type %2">; def err_for_range_dereference : Error< "invalid range expression of type %0; did you mean to dereference it " "with '*'?">; def note_for_range_invalid_iterator : Note < "in implicit call to 'operator%select{!=|*|++}0' for iterator of type %1">; def note_for_range_begin_end : Note< "selected '%select{begin|end}0' %select{function|template }1%2 with iterator type %3">; def warn_for_range_const_ref_binds_temp_built_from_ref : Warning< "loop variable %0 " "%diff{of type $ binds to a temporary constructed from type $" "|binds to a temporary constructed from a different type}1,2">, InGroup, DefaultIgnore; def note_use_type_or_non_reference : Note< "use non-reference type %0 to make construction explicit or type %1 to prevent copying">; def warn_for_range_ref_binds_ret_temp : Warning< "loop variable %0 binds to a temporary value produced by a range of type %1">, InGroup, DefaultIgnore; def note_use_non_reference_type : Note<"use non-reference type %0">; def warn_for_range_copy : Warning< "loop variable %0 creates a copy from type %1">, InGroup, DefaultIgnore; def note_use_reference_type : Note<"use reference type %0 to prevent copying">; def err_objc_for_range_init_stmt : Error< "initialization statement is not supported when iterating over Objective-C " "collection">; // C++11 constexpr def warn_cxx98_compat_constexpr : Warning< "'constexpr' specifier is incompatible with C++98">, InGroup, DefaultIgnore; // FIXME: Maybe this should also go in -Wc++14-compat? def warn_cxx14_compat_constexpr_not_const : Warning< "'constexpr' non-static member function will not be implicitly 'const' " "in C++14; add 'const' to avoid a change in behavior">, InGroup>; def err_invalid_consteval_take_address : Error< "cannot take address of consteval function %0 outside" " of an immediate invocation">; def err_invalid_consteval_call : Error< "call to consteval function %q0 is not a constant expression">; def err_invalid_consteval_decl_kind : Error< "%0 cannot be declared consteval">; def err_invalid_constexpr : Error< "%select{function parameter|typedef}0 " "cannot be %sub{select_constexpr_spec_kind}1">; def err_invalid_constexpr_member : Error<"non-static data member cannot be " "constexpr%select{; did you intend to make it %select{const|static}0?|}1">; def err_constexpr_tag : Error< "%select{class|struct|interface|union|enum}0 " "cannot be marked %sub{select_constexpr_spec_kind}1">; def err_constexpr_dtor : Error< "destructor cannot be declared %sub{select_constexpr_spec_kind}0">; def err_constexpr_dtor_subobject : Error< "destructor cannot be declared %sub{select_constexpr_spec_kind}0 because " "%select{data member %2|base class %3}1 does not have a " "constexpr destructor">; def note_constexpr_dtor_subobject : Note< "%select{data member %1|base class %2}0 declared here">; def err_constexpr_wrong_decl_kind : Error< "%sub{select_constexpr_spec_kind}0 can only be used " "in %select{|variable and function|function|variable}0 declarations">; def err_invalid_constexpr_var_decl : Error< "constexpr variable declaration must be a definition">; def err_constexpr_static_mem_var_requires_init : Error< "declaration of constexpr static data member %0 requires an initializer">; def err_constexpr_var_non_literal : Error< "constexpr variable cannot have non-literal type %0">; def err_constexpr_var_requires_const_init : Error< "constexpr variable %0 must be initialized by a constant expression">; def err_constexpr_var_requires_const_destruction : Error< "constexpr variable %0 must have constant destruction">; def err_constexpr_redecl_mismatch : Error< "%select{non-constexpr|constexpr|consteval}1 declaration of %0" " follows %select{non-constexpr|constexpr|consteval}2 declaration">; def err_constexpr_virtual : Error<"virtual function cannot be constexpr">; def warn_cxx17_compat_constexpr_virtual : Warning< "virtual constexpr functions are incompatible with " "C++ standards before C++20">, InGroup, DefaultIgnore; def err_constexpr_virtual_base : Error< "constexpr %select{member function|constructor}0 not allowed in " "%select{struct|interface|class}1 with virtual base " "%plural{1:class|:classes}2">; def note_non_literal_incomplete : Note< "incomplete type %0 is not a literal type">; def note_non_literal_virtual_base : Note<"%select{struct|interface|class}0 " "with virtual base %plural{1:class|:classes}1 is not a literal type">; def note_constexpr_virtual_base_here : Note<"virtual base class declared here">; def err_constexpr_non_literal_return : Error< "%select{constexpr|consteval}0 function's return type %1 is not a literal type">; def err_constexpr_non_literal_param : Error< "%select{constexpr|consteval}2 %select{function|constructor}1's %ordinal0 parameter type %3 is " "not a literal type">; def err_constexpr_body_invalid_stmt : Error< "statement not allowed in %select{constexpr|consteval}1 %select{function|constructor}0">; def ext_constexpr_body_invalid_stmt : ExtWarn< "use of this statement in a constexpr %select{function|constructor}0 " "is a C++14 extension">, InGroup; def warn_cxx11_compat_constexpr_body_invalid_stmt : Warning< "use of this statement in a constexpr %select{function|constructor}0 " "is incompatible with C++ standards before C++14">, InGroup, DefaultIgnore; def ext_constexpr_body_invalid_stmt_cxx20 : ExtWarn< "use of this statement in a constexpr %select{function|constructor}0 " "is a C++20 extension">, InGroup; def warn_cxx17_compat_constexpr_body_invalid_stmt : Warning< "use of this statement in a constexpr %select{function|constructor}0 " "is incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def ext_constexpr_type_definition : ExtWarn< "type definition in a constexpr %select{function|constructor}0 " "is a C++14 extension">, InGroup; def warn_cxx11_compat_constexpr_type_definition : Warning< "type definition in a constexpr %select{function|constructor}0 " "is incompatible with C++ standards before C++14">, InGroup, DefaultIgnore; def err_constexpr_vla : Error< "variably-modified type %0 cannot be used in a constexpr " "%select{function|constructor}1">; def ext_constexpr_local_var : ExtWarn< "variable declaration in a constexpr %select{function|constructor}0 " "is a C++14 extension">, InGroup; def warn_cxx11_compat_constexpr_local_var : Warning< "variable declaration in a constexpr %select{function|constructor}0 " "is incompatible with C++ standards before C++14">, InGroup, DefaultIgnore; def err_constexpr_local_var_static : Error< "%select{static|thread_local}1 variable not permitted in a constexpr " "%select{function|constructor}0">; def err_constexpr_local_var_non_literal_type : Error< "variable of non-literal type %1 cannot be defined in a constexpr " "%select{function|constructor}0">; def ext_constexpr_local_var_no_init : ExtWarn< "uninitialized variable in a constexpr %select{function|constructor}0 " "is a C++20 extension">, InGroup; def warn_cxx17_compat_constexpr_local_var_no_init : Warning< "uninitialized variable in a constexpr %select{function|constructor}0 " "is incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def ext_constexpr_function_never_constant_expr : ExtWarn< "%select{constexpr|consteval}1 %select{function|constructor}0 never produces a " "constant expression">, InGroup>, DefaultError; def err_attr_cond_never_constant_expr : Error< "%0 attribute expression never produces a constant expression">; def err_diagnose_if_invalid_diagnostic_type : Error< "invalid diagnostic type for 'diagnose_if'; use \"error\" or \"warning\" " "instead">; def err_constexpr_body_no_return : Error< "no return statement in %select{constexpr|consteval}0 function">; def err_constexpr_return_missing_expr : Error< "non-void %select{constexpr|consteval}1 function %0 should return a value">; def warn_cxx11_compat_constexpr_body_no_return : Warning< "constexpr function with no return statements is incompatible with C++ " "standards before C++14">, InGroup, DefaultIgnore; def ext_constexpr_body_multiple_return : ExtWarn< "multiple return statements in constexpr function is a C++14 extension">, InGroup; def warn_cxx11_compat_constexpr_body_multiple_return : Warning< "multiple return statements in constexpr function " "is incompatible with C++ standards before C++14">, InGroup, DefaultIgnore; def note_constexpr_body_previous_return : Note< "previous return statement is here">; // C++20 function try blocks in constexpr def ext_constexpr_function_try_block_cxx20 : ExtWarn< "function try block in constexpr %select{function|constructor}0 is " "a C++20 extension">, InGroup; def warn_cxx17_compat_constexpr_function_try_block : Warning< "function try block in constexpr %select{function|constructor}0 is " "incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def ext_constexpr_union_ctor_no_init : ExtWarn< "constexpr union constructor that does not initialize any member " "is a C++20 extension">, InGroup; def warn_cxx17_compat_constexpr_union_ctor_no_init : Warning< "constexpr union constructor that does not initialize any member " "is incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def ext_constexpr_ctor_missing_init : ExtWarn< "constexpr constructor that does not initialize all members " "is a C++20 extension">, InGroup; def warn_cxx17_compat_constexpr_ctor_missing_init : Warning< "constexpr constructor that does not initialize all members " "is incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def note_constexpr_ctor_missing_init : Note< "member not initialized by constructor">; def note_non_literal_no_constexpr_ctors : Note< "%0 is not literal because it is not an aggregate and has no constexpr " "constructors other than copy or move constructors">; def note_non_literal_base_class : Note< "%0 is not literal because it has base class %1 of non-literal type">; def note_non_literal_field : Note< "%0 is not literal because it has data member %1 of " "%select{non-literal|volatile}3 type %2">; def note_non_literal_user_provided_dtor : Note< "%0 is not literal because it has a user-provided destructor">; def note_non_literal_nontrivial_dtor : Note< "%0 is not literal because it has a non-trivial destructor">; def note_non_literal_non_constexpr_dtor : Note< "%0 is not literal because its destructor is not constexpr">; def note_non_literal_lambda : Note< "lambda closure types are non-literal types before C++17">; def warn_private_extern : Warning< "use of __private_extern__ on a declaration may not produce external symbol " "private to the linkage unit and is deprecated">, InGroup; def note_private_extern : Note< "use __attribute__((visibility(\"hidden\"))) attribute instead">; // C++ Concepts def err_concept_decls_may_only_appear_in_global_namespace_scope : Error< "concept declarations may only appear in global or namespace scope">; def err_concept_no_parameters : Error< "concept template parameter list must have at least one parameter; explicit " "specialization of concepts is not allowed">; def err_concept_extra_headers : Error< "extraneous template parameter list in concept definition">; def err_concept_no_associated_constraints : Error< "concept cannot have associated constraints">; def err_non_constant_constraint_expression : Error< "substitution into constraint expression resulted in a non-constant " "expression">; def err_non_bool_atomic_constraint : Error< "atomic constraint must be of type 'bool' (found %0)">; def err_template_arg_list_constraints_not_satisfied : Error< "constraints not satisfied for %select{class template|function template|variable template|alias template|" "template template parameter|template}0 %1%2">; def note_substituted_constraint_expr_is_ill_formed : Note< "because substituted constraint expression is ill-formed%0">; def note_atomic_constraint_evaluated_to_false : Note< "%select{and|because}0 '%1' evaluated to false">; def note_concept_specialization_constraint_evaluated_to_false : Note< "%select{and|because}0 '%1' evaluated to false">; def note_single_arg_concept_specialization_constraint_evaluated_to_false : Note< "%select{and|because}0 %1 does not satisfy %2">; def note_atomic_constraint_evaluated_to_false_elaborated : Note< "%select{and|because}0 '%1' (%2 %3 %4) evaluated to false">; def err_constrained_virtual_method : Error< "virtual function cannot have a requires clause">; def err_trailing_requires_clause_on_deduction_guide : Error< "deduction guide cannot have a requires clause">; def err_reference_to_function_with_unsatisfied_constraints : Error< "invalid reference to function %0: constraints not satisfied">; def err_requires_expr_local_parameter_default_argument : Error< "default arguments not allowed for parameters of a requires expression">; def err_requires_expr_parameter_referenced_in_evaluated_context : Error< "constraint variable %0 cannot be used in an evaluated context">; def note_expr_requirement_expr_substitution_error : Note< "%select{and|because}0 '%1' would be invalid: %2">; def note_expr_requirement_expr_unknown_substitution_error : Note< "%select{and|because}0 '%1' would be invalid">; def note_expr_requirement_noexcept_not_met : Note< "%select{and|because}0 '%1' may throw an exception">; def note_expr_requirement_type_requirement_substitution_error : Note< "%select{and|because}0 '%1' would be invalid: %2">; def note_expr_requirement_type_requirement_unknown_substitution_error : Note< "%select{and|because}0 '%1' would be invalid">; def note_expr_requirement_constraints_not_satisfied : Note< "%select{and|because}0 type constraint '%1' was not satisfied:">; def note_expr_requirement_constraints_not_satisfied_simple : Note< "%select{and|because}0 %1 does not satisfy %2:">; def note_type_requirement_substitution_error : Note< "%select{and|because}0 '%1' would be invalid: %2">; def note_type_requirement_unknown_substitution_error : Note< "%select{and|because}0 '%1' would be invalid">; def note_nested_requirement_substitution_error : Note< "%select{and|because}0 '%1' would be invalid: %2">; def note_nested_requirement_unknown_substitution_error : Note< "%select{and|because}0 '%1' would be invalid">; def note_ambiguous_atomic_constraints : Note< "similar constraint expressions not considered equivalent; constraint " "expressions cannot be considered equivalent unless they originate from the " "same concept">; def note_ambiguous_atomic_constraints_similar_expression : Note< "similar constraint expression here">; def err_unsupported_placeholder_constraint : Error< "constrained placeholder types other than simple 'auto' on non-type template " "parameters not supported yet">; def err_template_different_requires_clause : Error< "requires clause differs in template redeclaration">; def err_template_different_type_constraint : Error< "type constraint differs in template redeclaration">; def err_template_template_parameter_not_at_least_as_constrained : Error< "template template argument %0 is more constrained than template template " "parameter %1">; def err_type_constraint_non_type_concept : Error< "concept named in type constraint is not a type concept">; def err_type_constraint_missing_arguments : Error< "%0 requires more than 1 template argument; provide the remaining arguments " "explicitly to use it here">; def err_placeholder_constraints_not_satisfied : Error< "deduced type %0 does not satisfy %1">; // C++11 char16_t/char32_t def warn_cxx98_compat_unicode_type : Warning< "'%0' type specifier is incompatible with C++98">, InGroup, DefaultIgnore; def warn_cxx17_compat_unicode_type : Warning< "'char8_t' type specifier is incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; // __make_integer_seq def err_integer_sequence_negative_length : Error< "integer sequences must have non-negative sequence length">; def err_integer_sequence_integral_element_type : Error< "integer sequences must have integral element type">; // __type_pack_element def err_type_pack_element_out_of_bounds : Error< "a parameter pack may not be accessed at an out of bounds index">; // Objective-C++ def err_objc_decls_may_only_appear_in_global_scope : Error< "Objective-C declarations may only appear in global scope">; def warn_auto_var_is_id : Warning< "'auto' deduced as 'id' in declaration of %0">, InGroup>; // Attributes def warn_nomerge_attribute_ignored_in_stmt: Warning< "%0 attribute is ignored because there exists no call expression inside the " "statement">, InGroup; def err_nsobject_attribute : Error< "'NSObject' attribute is for pointer types only">; def err_attributes_are_not_compatible : Error< "%0 and %1 attributes are not compatible">; def err_attribute_invalid_argument : Error< "%select{a reference type|an array type|a non-vector or " "non-vectorizable scalar type}0 is an invalid argument to attribute %1">; def err_attribute_wrong_number_arguments : Error< "%0 attribute %plural{0:takes no arguments|1:takes one argument|" ":requires exactly %1 arguments}1">; def err_attribute_too_many_arguments : Error< "%0 attribute takes no more than %1 argument%s1">; def err_attribute_too_few_arguments : Error< "%0 attribute takes at least %1 argument%s1">; def err_attribute_invalid_vector_type : Error<"invalid vector element type %0">; def err_attribute_invalid_matrix_type : Error<"invalid matrix element type %0">; def err_attribute_bad_neon_vector_size : Error< "Neon vector size must be 64 or 128 bits">; def err_attribute_invalid_sve_type : Error< "%0 attribute applied to non-SVE type %1">; def err_attribute_bad_sve_vector_size : Error< "invalid SVE vector size '%0', must match value set by " "'-msve-vector-bits' ('%1')">; def err_attribute_arm_feature_sve_bits_unsupported : Error< "%0 is only supported when '-msve-vector-bits=' is specified with a " "value of 128, 256, 512, 1024 or 2048.">; def err_attribute_requires_positive_integer : Error< "%0 attribute requires a %select{positive|non-negative}1 " "integral compile time constant expression">; def err_attribute_requires_opencl_version : Error< "%0 attribute requires OpenCL version %1%select{| or above}2">; def err_invalid_branch_protection_spec : Error< "invalid or misplaced branch protection specification '%0'">; def warn_unsupported_target_attribute : Warning<"%select{unsupported|duplicate|unknown}0%select{| architecture|" " tune CPU}1 '%2' in the 'target' attribute string; 'target' " "attribute ignored">, InGroup; def err_attribute_unsupported : Error<"%0 attribute is not supported on targets missing %1;" " specify an appropriate -march= or -mcpu=">; // The err_*_attribute_argument_not_int are separate because they're used by // VerifyIntegerConstantExpression. def err_aligned_attribute_argument_not_int : Error< "'aligned' attribute requires integer constant">; def err_align_value_attribute_argument_not_int : Error< "'align_value' attribute requires integer constant">; def err_alignas_attribute_wrong_decl_type : Error< "%0 attribute cannot be applied to a %select{function parameter|" "variable with 'register' storage class|'catch' variable|bit-field}1">; def err_alignas_missing_on_definition : Error< "%0 must be specified on definition if it is specified on any declaration">; def note_alignas_on_declaration : Note<"declared with %0 attribute here">; def err_alignas_mismatch : Error< "redeclaration has different alignment requirement (%1 vs %0)">; def err_alignas_underaligned : Error< "requested alignment is less than minimum alignment of %1 for type %0">; def err_attribute_sizeless_type : Error< "%0 attribute cannot be applied to sizeless type %1">; def err_attribute_argument_n_type : Error< "%0 attribute requires parameter %1 to be %select{int or bool|an integer " "constant|a string|an identifier|a constant expression}2">; def err_attribute_argument_type : Error< "%0 attribute requires %select{int or bool|an integer " "constant|a string|an identifier}1">; def err_attribute_argument_out_of_range : Error< "%0 attribute requires integer constant between %1 and %2 inclusive">; def err_init_priority_object_attr : Error< "can only use 'init_priority' attribute on file-scope definitions " "of objects of class type">; def err_attribute_argument_out_of_bounds : Error< "%0 attribute parameter %1 is out of bounds">; def err_attribute_only_once_per_parameter : Error< "%0 attribute can only be applied once per parameter">; def err_mismatched_uuid : Error<"uuid does not match previous declaration">; def note_previous_uuid : Note<"previous uuid specified here">; def warn_attribute_pointers_only : Warning< "%0 attribute only applies to%select{| constant}1 pointer arguments">, InGroup; def err_attribute_pointers_only : Error; def err_attribute_integers_only : Error< "%0 attribute argument may only refer to a function parameter of integer " "type">; def warn_attribute_return_pointers_only : Warning< "%0 attribute only applies to return values that are pointers">, InGroup; def warn_attribute_return_pointers_refs_only : Warning< "%0 attribute only applies to return values that are pointers or references">, InGroup; def warn_attribute_pointer_or_reference_only : Warning< "%0 attribute only applies to a pointer or reference (%1 is invalid)">, InGroup; def err_attribute_no_member_pointers : Error< "%0 attribute cannot be used with pointers to members">; def err_attribute_invalid_implicit_this_argument : Error< "%0 attribute is invalid for the implicit this argument">; def err_ownership_type : Error< "%0 attribute only applies to %select{pointer|integer}1 arguments">; def err_ownership_returns_index_mismatch : Error< "'ownership_returns' attribute index does not match; here it is %0">; def note_ownership_returns_index_mismatch : Note< "declared with index %0 here">; def err_format_strftime_third_parameter : Error< "strftime format attribute requires 3rd parameter to be 0">; def err_format_attribute_requires_variadic : Error< "format attribute requires variadic function">; def err_format_attribute_not : Error<"format argument not %0">; def err_format_attribute_result_not : Error<"function does not return %0">; def err_format_attribute_implicit_this_format_string : Error< "format attribute cannot specify the implicit this argument as the format " "string">; def err_callback_attribute_no_callee : Error< "'callback' attribute specifies no callback callee">; def err_callback_attribute_invalid_callee : Error< "'callback' attribute specifies invalid callback callee">; def err_callback_attribute_multiple : Error< "multiple 'callback' attributes specified">; def err_callback_attribute_argument_unknown : Error< "'callback' attribute argument %0 is not a known function parameter">; def err_callback_callee_no_function_type : Error< "'callback' attribute callee does not have function type">; def err_callback_callee_is_variadic : Error< "'callback' attribute callee may not be variadic">; def err_callback_implicit_this_not_available : Error< "'callback' argument at position %0 references unavailable implicit 'this'">; def err_init_method_bad_return_type : Error< "init methods must return an object pointer type, not %0">; def err_attribute_invalid_size : Error< "vector size not an integral multiple of component size">; def err_attribute_zero_size : Error<"zero %0 size">; def err_attribute_size_too_large : Error<"%0 size too large">; def err_typecheck_sve_ambiguous : Error< "cannot combine fixed-length and sizeless SVE vectors in expression, result is ambiguous (%0 and %1)">; def err_typecheck_sve_gnu_ambiguous : Error< "cannot combine GNU and SVE vectors in expression, result is ambiguous (%0 and %1)">; def err_typecheck_vector_not_convertable_implict_truncation : Error< "cannot convert between %select{scalar|vector}0 type %1 and vector type" " %2 as implicit conversion would cause truncation">; def err_typecheck_vector_not_convertable : Error< "cannot convert between vector values of different size (%0 and %1)">; def err_typecheck_vector_not_convertable_non_scalar : Error< "cannot convert between vector and non-scalar values (%0 and %1)">; def err_typecheck_vector_lengths_not_equal : Error< "vector operands do not have the same number of elements (%0 and %1)">; def warn_typecheck_vector_element_sizes_not_equal : Warning< "vector operands do not have the same elements sizes (%0 and %1)">, InGroup>, DefaultError; def err_ext_vector_component_exceeds_length : Error< "vector component access exceeds type %0">; def err_ext_vector_component_name_illegal : Error< "illegal vector component name '%0'">; def err_attribute_address_space_negative : Error< "address space is negative">; def err_attribute_address_space_too_high : Error< "address space is larger than the maximum supported (%0)">; def err_attribute_address_multiple_qualifiers : Error< "multiple address spaces specified for type">; def warn_attribute_address_multiple_identical_qualifiers : Warning< "multiple identical address spaces specified for type">, InGroup; def err_attribute_not_clinkage : Error< "function type with %0 attribute must have C linkage">; def err_function_decl_cmse_ns_call : Error< "functions may not be declared with 'cmse_nonsecure_call' attribute">; def err_attribute_address_function_type : Error< "function type may not be qualified with an address space">; def err_as_qualified_auto_decl : Error< "automatic variable qualified with an%select{| invalid}0 address space">; def err_arg_with_address_space : Error< "parameter may not be qualified with an address space">; def err_field_with_address_space : Error< "field may not be qualified with an address space">; def err_compound_literal_with_address_space : Error< "compound literal in function scope may not be qualified with an address space">; def err_address_space_mismatch_templ_inst : Error< "conflicting address space qualifiers are provided between types %0 and %1">; def err_attr_objc_ownership_redundant : Error< "the type %0 is already explicitly ownership-qualified">; def err_invalid_nsnumber_type : Error< "%0 is not a valid literal type for NSNumber">; def err_objc_illegal_boxed_expression_type : Error< "illegal type %0 used in a boxed expression">; def err_objc_non_trivially_copyable_boxed_expression_type : Error< "non-trivially copyable type %0 cannot be used in a boxed expression">; def err_objc_incomplete_boxed_expression_type : Error< "incomplete type %0 used in a boxed expression">; def err_undeclared_objc_literal_class : Error< "definition of class %0 must be available to use Objective-C " "%select{array literals|dictionary literals|numeric literals|boxed expressions|" "string literals}1">; def err_undeclared_boxing_method : Error< "declaration of %0 is missing in %1 class">; def err_objc_literal_method_sig : Error< "literal construction method %0 has incompatible signature">; def note_objc_literal_method_param : Note< "%select{first|second|third}0 parameter has unexpected type %1 " "(should be %2)">; def note_objc_literal_method_return : Note< "method returns unexpected type %0 (should be an object type)">; def err_invalid_collection_element : Error< "collection element of type %0 is not an Objective-C object">; def err_box_literal_collection : Error< "%select{string|character|boolean|numeric}0 literal must be prefixed by '@' " "in a collection">; def warn_objc_literal_comparison : Warning< "direct comparison of %select{an array literal|a dictionary literal|" "a numeric literal|a boxed expression|}0 has undefined behavior">, InGroup; def err_missing_atsign_prefix : Error< "%select{string|numeric}0 literal must be prefixed by '@'">; def warn_objc_string_literal_comparison : Warning< "direct comparison of a string literal has undefined behavior">, InGroup; def warn_concatenated_literal_array_init : Warning< "suspicious concatenation of string literals in an array initialization; " "did you mean to separate the elements with a comma?">, InGroup, DefaultIgnore; def warn_concatenated_nsarray_literal : Warning< "concatenated NSString literal for an NSArray expression - " "possibly missing a comma">, InGroup; def note_objc_literal_comparison_isequal : Note< "use 'isEqual:' instead">; def warn_objc_collection_literal_element : Warning< "object of type %0 is not compatible with " "%select{array element type|dictionary key type|dictionary value type}1 %2">, InGroup; def warn_nsdictionary_duplicate_key : Warning< "duplicate key in dictionary literal">, InGroup>; def note_nsdictionary_duplicate_key_here : Note< "previous equal key is here">; def err_swift_param_attr_not_swiftcall : Error< "'%0' parameter can only be used with swiftcall calling convention">; def err_swift_indirect_result_not_first : Error< "'swift_indirect_result' parameters must be first parameters of function">; def err_swift_error_result_not_after_swift_context : Error< "'swift_error_result' parameter must follow 'swift_context' parameter">; def err_swift_abi_parameter_wrong_type : Error< "'%0' parameter must have pointer%select{| to unqualified pointer}1 type; " "type here is %2">; def err_attribute_argument_invalid : Error< "%0 attribute argument is invalid: %select{max must be 0 since min is 0|" "min must not be greater than max}1">; def err_attribute_argument_is_zero : Error< "%0 attribute must be greater than 0">; def warn_attribute_argument_n_negative : Warning< "%0 attribute parameter %1 is negative and will be ignored">, InGroup; def err_property_function_in_objc_container : Error< "use of Objective-C property in function nested in Objective-C " "container not supported, move function outside its container">; let CategoryName = "Cocoa API Issue" in { def warn_objc_redundant_literal_use : Warning< "using %0 with a literal is redundant">, InGroup; } def err_attr_tlsmodel_arg : Error<"tls_model must be \"global-dynamic\", " "\"local-dynamic\", \"initial-exec\" or \"local-exec\"">; def err_tls_var_aligned_over_maximum : Error< "alignment (%0) of thread-local variable %1 is greater than the maximum supported " "alignment (%2) for a thread-local variable on this target">; def err_only_annotate_after_access_spec : Error< "access specifier can only have annotation attributes">; def err_attribute_section_invalid_for_target : Error< "argument to %select{'code_seg'|'section'}1 attribute is not valid for this target: %0">; def warn_attribute_section_drectve : Warning< "#pragma %0(\".drectve\") has undefined behavior, " "use #pragma comment(linker, ...) instead">, InGroup; def warn_mismatched_section : Warning< "%select{codeseg|section}0 does not match previous declaration">, InGroup
; def warn_attribute_section_on_redeclaration : Warning< "section attribute is specified on redeclared variable">, InGroup
; def err_mismatched_code_seg_base : Error< "derived class must specify the same code segment as its base classes">; def err_mismatched_code_seg_override : Error< "overriding virtual function must specify the same code segment as its overridden function">; def err_conflicting_codeseg_attribute : Error< "conflicting code segment specifiers">; def warn_duplicate_codeseg_attribute : Warning< "duplicate code segment specifiers">, InGroup
; def err_anonymous_property: Error< "anonymous property is not supported">; def err_property_is_variably_modified : Error< "property %0 has a variably modified type">; def err_no_accessor_for_property : Error< "no %select{getter|setter}0 defined for property %1">; def err_cannot_find_suitable_accessor : Error< "cannot find suitable %select{getter|setter}0 for property %1">; def warn_alloca : Warning< "use of function %0 is discouraged; there is no way to check for failure but " "failure may still occur, resulting in a possibly exploitable security vulnerability">, InGroup>, DefaultIgnore; def warn_alloca_align_alignof : Warning< "second argument to __builtin_alloca_with_align is supposed to be in bits">, InGroup>; def err_alignment_too_small : Error< "requested alignment must be %0 or greater">; def err_alignment_too_big : Error< "requested alignment must be %0 or smaller">; def err_alignment_not_power_of_two : Error< "requested alignment is not a power of 2">; def warn_alignment_not_power_of_two : Warning< err_alignment_not_power_of_two.Text>, InGroup>; def err_alignment_dependent_typedef_name : Error< "requested alignment is dependent but declaration is not dependent">; def warn_alignment_builtin_useless : Warning< "%select{aligning a value|the result of checking whether a value is aligned}0" " to 1 byte is %select{a no-op|always true}0">, InGroup; def err_attribute_aligned_too_great : Error< "requested alignment must be %0 bytes or smaller">; def warn_assume_aligned_too_great : Warning<"requested alignment must be %0 bytes or smaller; maximum " "alignment assumed">, InGroup>; def warn_redeclaration_without_attribute_prev_attribute_ignored : Warning< "%q0 redeclared without %1 attribute: previous %1 ignored">, InGroup; def warn_redeclaration_without_import_attribute : Warning< "%q0 redeclared without 'dllimport' attribute: 'dllexport' attribute added">, InGroup; def warn_dllimport_dropped_from_inline_function : Warning< "%q0 redeclared inline; %1 attribute ignored">, InGroup; def warn_attribute_ignored : Warning<"%0 attribute ignored">, InGroup; def warn_nothrow_attribute_ignored : Warning<"'nothrow' attribute conflicts with" " exception specification; attribute ignored">, InGroup; def warn_attribute_ignored_on_inline : Warning<"%0 attribute ignored on inline function">, InGroup; def warn_nocf_check_attribute_ignored : Warning<"'nocf_check' attribute ignored; use -fcf-protection to enable the attribute">, InGroup; def warn_attribute_after_definition_ignored : Warning< "attribute %0 after definition is ignored">, InGroup; def warn_attributes_likelihood_ifstmt_conflict : Warning<"conflicting attributes %0 are ignored">, InGroup; def warn_cxx11_gnu_attribute_on_type : Warning< "attribute %0 ignored, because it cannot be applied to a type">, InGroup; def warn_unhandled_ms_attribute_ignored : Warning< "__declspec attribute %0 is not supported">, InGroup; def warn_attribute_has_no_effect_on_infinite_loop : Warning< "attribute %0 has no effect when annotating an infinite loop">, InGroup; def note_attribute_has_no_effect_on_infinite_loop_here : Note< "annotating the infinite loop here">; def warn_attribute_has_no_effect_on_if_constexpr : Warning< "attribute %0 has no effect when annotating an 'if constexpr' statement">, InGroup; def note_attribute_has_no_effect_on_if_constexpr_here : Note< "annotating the 'if constexpr' statement here">; def err_decl_attribute_invalid_on_stmt : Error< "%0 attribute cannot be applied to a statement">; def err_stmt_attribute_invalid_on_decl : Error< "%0 attribute cannot be applied to a declaration">; def warn_declspec_attribute_ignored : Warning< "attribute %0 is ignored, place it after " "\"%select{class|struct|interface|union|enum}1\" to apply attribute to " "type declaration">, InGroup; def warn_attribute_precede_definition : Warning< "attribute declaration must precede definition">, InGroup; def warn_attribute_void_function_method : Warning< "attribute %0 cannot be applied to " "%select{functions|Objective-C method}1 without return value">, InGroup; def warn_attribute_weak_on_field : Warning< "__weak attribute cannot be specified on a field declaration">, InGroup; def warn_gc_attribute_weak_on_local : Warning< "Objective-C GC does not allow weak variables on the stack">, InGroup; def warn_nsobject_attribute : Warning< "'NSObject' attribute may be put on a typedef only; attribute is ignored">, InGroup; def warn_independentclass_attribute : Warning< "'objc_independent_class' attribute may be put on a typedef only; " "attribute is ignored">, InGroup; def warn_ptr_independentclass_attribute : Warning< "'objc_independent_class' attribute may be put on Objective-C object " "pointer type only; attribute is ignored">, InGroup; def warn_attribute_weak_on_local : Warning< "__weak attribute cannot be specified on an automatic variable when ARC " "is not enabled">, InGroup; def warn_weak_identifier_undeclared : Warning< "weak identifier %0 never declared">; def warn_attribute_cmse_entry_static : Warning< "'cmse_nonsecure_entry' cannot be applied to functions with internal linkage">, InGroup; def warn_cmse_nonsecure_union : Warning< "passing union across security boundary via %select{parameter %1|return value}0 " "may leak information">, InGroup>; def err_attribute_weak_static : Error< "weak declaration cannot have internal linkage">; def err_attribute_selectany_non_extern_data : Error< "'selectany' can only be applied to data items with external linkage">; def err_declspec_thread_on_thread_variable : Error< "'__declspec(thread)' applied to variable that already has a " "thread-local storage specifier">; def err_attribute_dll_not_extern : Error< "%q0 must have external linkage when declared %q1">; def err_attribute_dll_thread_local : Error< "%q0 cannot be thread local when declared %q1">; def err_attribute_dll_lambda : Error< "lambda cannot be declared %0">; def warn_attribute_invalid_on_definition : Warning< "'%0' attribute cannot be specified on a definition">, InGroup; def err_attribute_dll_redeclaration : Error< "redeclaration of %q0 cannot add %q1 attribute">; def warn_attribute_dll_redeclaration : Warning< "redeclaration of %q0 should not add %q1 attribute">, InGroup>; def err_attribute_dllimport_function_definition : Error< "dllimport cannot be applied to non-inline function definition">; def err_attribute_dll_deleted : Error< "attribute %q0 cannot be applied to a deleted function">; def err_attribute_dllimport_data_definition : Error< "definition of dllimport data">; def err_attribute_dllimport_static_field_definition : Error< "definition of dllimport static field not allowed">; def warn_attribute_dllimport_static_field_definition : Warning< "definition of dllimport static field">, InGroup>; def warn_attribute_dllexport_explicit_instantiation_decl : Warning< "explicit instantiation declaration should not be 'dllexport'">, InGroup>; def warn_attribute_dllexport_explicit_instantiation_def : Warning< "'dllexport' attribute ignored on explicit instantiation definition">, InGroup; def warn_invalid_initializer_from_system_header : Warning< "invalid constructor form class in system header, should not be explicit">, InGroup>; def note_used_in_initialization_here : Note<"used in initialization here">; def err_attribute_dll_member_of_dll_class : Error< "attribute %q0 cannot be applied to member of %q1 class">; def warn_attribute_dll_instantiated_base_class : Warning< "propagating dll attribute to %select{already instantiated|explicitly specialized}0 " "base class template without dll attribute is not supported">, InGroup>, DefaultIgnore; def err_attribute_dll_ambiguous_default_ctor : Error< "'__declspec(dllexport)' cannot be applied to more than one default constructor in %0">; def err_attribute_weakref_not_static : Error< "weakref declaration must have internal linkage">; def err_attribute_weakref_not_global_context : Error< "weakref declaration of %0 must be in a global context">; def err_attribute_weakref_without_alias : Error< "weakref declaration of %0 must also have an alias attribute">; def err_alias_not_supported_on_darwin : Error < "aliases are not supported on darwin">; def warn_attribute_wrong_decl_type_str : Warning< "%0 attribute only applies to %1">, InGroup; def err_attribute_wrong_decl_type_str : Error< warn_attribute_wrong_decl_type_str.Text>; def warn_attribute_wrong_decl_type : Warning< "%0 attribute only applies to %select{" "functions" "|unions" "|variables and functions" "|functions and methods" "|functions, methods and blocks" "|functions, methods, and parameters" "|variables" "|variables and fields" "|variables, data members and tag types" "|types and namespaces" "|variables, functions and classes" "|kernel functions" "|non-K&R-style functions}1">, InGroup; def err_attribute_wrong_decl_type : Error; def warn_type_attribute_wrong_type : Warning< "'%0' only applies to %select{function|pointer|" "Objective-C object or block pointer}1 types; type here is %2">, InGroup; def warn_incomplete_encoded_type : Warning< "encoding of %0 type is incomplete because %1 component has unknown encoding">, InGroup>; def warn_gnu_inline_attribute_requires_inline : Warning< "'gnu_inline' attribute requires function to be marked 'inline'," " attribute ignored">, InGroup; def warn_gnu_inline_cplusplus_without_extern : Warning< "'gnu_inline' attribute without 'extern' in C++ treated as externally" " available, this changed in Clang 10">, InGroup>; def err_attribute_vecreturn_only_vector_member : Error< "the vecreturn attribute can only be used on a class or structure with one member, which must be a vector">; def err_attribute_vecreturn_only_pod_record : Error< "the vecreturn attribute can only be used on a POD (plain old data) class or structure (i.e. no virtual functions)">; def err_cconv_change : Error< "function declared '%0' here was previously declared " "%select{'%2'|without calling convention}1">; def warn_cconv_unsupported : Warning< "%0 calling convention is not supported %select{" // Use CallingConventionIgnoredReason Enum to specify these. "for this target" "|on variadic function" "|on constructor/destructor" "|on builtin function" "}1">, InGroup; def error_cconv_unsupported : Error; def err_cconv_knr : Error< "function with no prototype cannot use the %0 calling convention">; def warn_cconv_knr : Warning< err_cconv_knr.Text>, InGroup>; def err_cconv_varargs : Error< "variadic function cannot use %0 calling convention">; def err_regparm_mismatch : Error<"function declared with regparm(%0) " "attribute was previously declared " "%plural{0:without the regparm|:with the regparm(%1)}1 attribute">; def err_function_attribute_mismatch : Error< "function declared with %0 attribute " "was previously declared without the %0 attribute">; def err_objc_precise_lifetime_bad_type : Error< "objc_precise_lifetime only applies to retainable types; type here is %0">; def warn_objc_precise_lifetime_meaningless : Error< "objc_precise_lifetime is not meaningful for " "%select{__unsafe_unretained|__autoreleasing}0 objects">; def err_invalid_pcs : Error<"invalid PCS type">; def warn_attribute_not_on_decl : Warning< "%0 attribute ignored when parsing type">, InGroup; def err_base_specifier_attribute : Error< "%0 attribute cannot be applied to a base specifier">; def err_invalid_attribute_on_virtual_function : Error< "%0 attribute cannot be applied to virtual functions">; def warn_declspec_allocator_nonpointer : Warning< "ignoring __declspec(allocator) because the function return type %0 is not " "a pointer or reference type">, InGroup; def err_cconv_incomplete_param_type : Error< "parameter %0 must have a complete type to use function %1 with the %2 " "calling convention">; def err_attribute_output_parameter : Error< "attribute only applies to output parameters">; def ext_cannot_use_trivial_abi : ExtWarn< "'trivial_abi' cannot be applied to %0">, InGroup; def note_cannot_use_trivial_abi_reason : Note< "'trivial_abi' is disallowed on %0 because %select{" "its copy constructors and move constructors are all deleted|" "it is polymorphic|" "it has a base of a non-trivial class type|it has a virtual base|" "it has a __weak field|it has a field of a non-trivial class type}1">; // Availability attribute def warn_availability_unknown_platform : Warning< "unknown platform %0 in availability macro">, InGroup; def warn_availability_version_ordering : Warning< "feature cannot be %select{introduced|deprecated|obsoleted}0 in %1 version " "%2 before it was %select{introduced|deprecated|obsoleted}3 in version %4; " "attribute ignored">, InGroup; def warn_mismatched_availability: Warning< "availability does not match previous declaration">, InGroup; def warn_mismatched_availability_override : Warning< "%select{|overriding }4method %select{introduced after|" "deprecated before|obsoleted before}0 " "%select{the protocol method it implements|overridden method}4 " "on %1 (%2 vs. %3)">, InGroup; def warn_mismatched_availability_override_unavail : Warning< "%select{|overriding }1method cannot be unavailable on %0 when " "%select{the protocol method it implements|its overridden method}1 is " "available">, InGroup; def warn_availability_on_static_initializer : Warning< "ignoring availability attribute %select{on '+load' method|" "with constructor attribute|with destructor attribute}0">, InGroup; def note_overridden_method : Note< "overridden method is here">; def warn_availability_swift_unavailable_deprecated_only : Warning< "only 'unavailable' and 'deprecated' are supported for Swift availability">, InGroup; def note_protocol_method : Note< "protocol method is here">; def warn_unguarded_availability : Warning<"%0 is only available on %1 %2 or newer">, InGroup, DefaultIgnore; def warn_unguarded_availability_new : Warning, InGroup; def note_decl_unguarded_availability_silence : Note< "annotate %select{%1|anonymous %1}0 with an availability attribute to silence this warning">; def note_unguarded_available_silence : Note< "enclose %0 in %select{an @available|a __builtin_available}1 check to silence" " this warning">; def warn_at_available_unchecked_use : Warning< "%select{@available|__builtin_available}0 does not guard availability here; " "use if (%select{@available|__builtin_available}0) instead">, InGroup>; // Thread Safety Attributes def warn_thread_attribute_ignored : Warning< "ignoring %0 attribute because its argument is invalid">, InGroup, DefaultIgnore; def warn_thread_attribute_not_on_non_static_member : Warning< "%0 attribute without capability arguments can only be applied to non-static " "methods of a class">, InGroup, DefaultIgnore; def warn_thread_attribute_not_on_capability_member : Warning< "%0 attribute without capability arguments refers to 'this', but %1 isn't " "annotated with 'capability' or 'scoped_lockable' attribute">, InGroup, DefaultIgnore; def warn_thread_attribute_argument_not_lockable : Warning< "%0 attribute requires arguments whose type is annotated " "with 'capability' attribute; type here is %1">, InGroup, DefaultIgnore; def warn_thread_attribute_decl_not_lockable : Warning< "%0 attribute can only be applied in a context annotated " "with 'capability' attribute">, InGroup, DefaultIgnore; def warn_thread_attribute_decl_not_pointer : Warning< "%0 only applies to pointer types; type here is %1">, InGroup, DefaultIgnore; def err_attribute_argument_out_of_bounds_extra_info : Error< "%0 attribute parameter %1 is out of bounds: " "%plural{0:no parameters to index into|" "1:can only be 1, since there is one parameter|" ":must be between 1 and %2}2">; // Thread Safety Analysis def warn_unlock_but_no_lock : Warning<"releasing %0 '%1' that was not held">, InGroup, DefaultIgnore; def warn_unlock_kind_mismatch : Warning< "releasing %0 '%1' using %select{shared|exclusive}2 access, expected " "%select{shared|exclusive}3 access">, InGroup, DefaultIgnore; def warn_double_lock : Warning<"acquiring %0 '%1' that is already held">, InGroup, DefaultIgnore; def warn_no_unlock : Warning< "%0 '%1' is still held at the end of function">, InGroup, DefaultIgnore; def warn_expecting_locked : Warning< "expecting %0 '%1' to be held at the end of function">, InGroup, DefaultIgnore; // FIXME: improve the error message about locks not in scope def warn_lock_some_predecessors : Warning< "%0 '%1' is not held on every path through here">, InGroup, DefaultIgnore; def warn_expecting_lock_held_on_loop : Warning< "expecting %0 '%1' to be held at start of each loop">, InGroup, DefaultIgnore; def note_locked_here : Note<"%0 acquired here">; def note_unlocked_here : Note<"%0 released here">; def warn_lock_exclusive_and_shared : Warning< "%0 '%1' is acquired exclusively and shared in the same scope">, InGroup, DefaultIgnore; def note_lock_exclusive_and_shared : Note< "the other acquisition of %0 '%1' is here">; def warn_variable_requires_any_lock : Warning< "%select{reading|writing}1 variable %0 requires holding " "%select{any mutex|any mutex exclusively}1">, InGroup, DefaultIgnore; def warn_var_deref_requires_any_lock : Warning< "%select{reading|writing}1 the value pointed to by %0 requires holding " "%select{any mutex|any mutex exclusively}1">, InGroup, DefaultIgnore; def warn_fun_excludes_mutex : Warning< "cannot call function '%1' while %0 '%2' is held">, InGroup, DefaultIgnore; def warn_cannot_resolve_lock : Warning< "cannot resolve lock expression">, InGroup, DefaultIgnore; def warn_acquired_before : Warning< "%0 '%1' must be acquired before '%2'">, InGroup, DefaultIgnore; def warn_acquired_before_after_cycle : Warning< "Cycle in acquired_before/after dependencies, starting with '%0'">, InGroup, DefaultIgnore; // Thread safety warnings negative capabilities def warn_acquire_requires_negative_cap : Warning< "acquiring %0 '%1' requires negative capability '%2'">, InGroup, DefaultIgnore; def warn_fun_requires_negative_cap : Warning< "calling function %0 requires negative capability '%1'">, InGroup, DefaultIgnore; // Thread safety warnings on pass by reference def warn_guarded_pass_by_reference : Warning< "passing variable %1 by reference requires holding %0 " "%select{'%2'|'%2' exclusively}3">, InGroup, DefaultIgnore; def warn_pt_guarded_pass_by_reference : Warning< "passing the value that %1 points to by reference requires holding %0 " "%select{'%2'|'%2' exclusively}3">, InGroup, DefaultIgnore; // Imprecise thread safety warnings def warn_variable_requires_lock : Warning< "%select{reading|writing}3 variable %1 requires holding %0 " "%select{'%2'|'%2' exclusively}3">, InGroup, DefaultIgnore; def warn_var_deref_requires_lock : Warning< "%select{reading|writing}3 the value pointed to by %1 requires " "holding %0 %select{'%2'|'%2' exclusively}3">, InGroup, DefaultIgnore; def warn_fun_requires_lock : Warning< "calling function %1 requires holding %0 %select{'%2'|'%2' exclusively}3">, InGroup, DefaultIgnore; // Precise thread safety warnings def warn_variable_requires_lock_precise : Warning, InGroup, DefaultIgnore; def warn_var_deref_requires_lock_precise : Warning, InGroup, DefaultIgnore; def warn_fun_requires_lock_precise : Warning, InGroup, DefaultIgnore; def note_found_mutex_near_match : Note<"found near match '%0'">; // Verbose thread safety warnings def warn_thread_safety_verbose : Warning<"Thread safety verbose warning.">, InGroup, DefaultIgnore; def note_thread_warning_in_fun : Note<"Thread warning in function %0">; def note_guarded_by_declared_here : Note<"Guarded_by declared here.">; // Dummy warning that will trigger "beta" warnings from the analysis if enabled. def warn_thread_safety_beta : Warning<"Thread safety beta warning.">, InGroup, DefaultIgnore; // Consumed warnings def warn_use_in_invalid_state : Warning< "invalid invocation of method '%0' on object '%1' while it is in the '%2' " "state">, InGroup, DefaultIgnore; def warn_use_of_temp_in_invalid_state : Warning< "invalid invocation of method '%0' on a temporary object while it is in the " "'%1' state">, InGroup, DefaultIgnore; def warn_attr_on_unconsumable_class : Warning< "consumed analysis attribute is attached to member of class %0 which isn't " "marked as consumable">, InGroup, DefaultIgnore; def warn_return_typestate_for_unconsumable_type : Warning< "return state set for an unconsumable type '%0'">, InGroup, DefaultIgnore; def warn_return_typestate_mismatch : Warning< "return value not in expected state; expected '%0', observed '%1'">, InGroup, DefaultIgnore; def warn_loop_state_mismatch : Warning< "state of variable '%0' must match at the entry and exit of loop">, InGroup, DefaultIgnore; def warn_param_return_typestate_mismatch : Warning< "parameter '%0' not in expected state when the function returns: expected " "'%1', observed '%2'">, InGroup, DefaultIgnore; def warn_param_typestate_mismatch : Warning< "argument not in expected state; expected '%0', observed '%1'">, InGroup, DefaultIgnore; // no_sanitize attribute def warn_unknown_sanitizer_ignored : Warning< "unknown sanitizer '%0' ignored">, InGroup; def warn_impcast_vector_scalar : Warning< "implicit conversion turns vector to scalar: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_complex_scalar : Warning< "implicit conversion discards imaginary component: %0 to %1">, InGroup, DefaultIgnore; def err_impcast_complex_scalar : Error< "implicit conversion from %0 to %1 is not permitted in C++">; def warn_impcast_float_precision : Warning< "implicit conversion loses floating-point precision: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_float_result_precision : Warning< "implicit conversion when assigning computation result loses floating-point precision: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_double_promotion : Warning< "implicit conversion increases floating-point precision: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_integer_sign : Warning< "implicit conversion changes signedness: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_integer_sign_conditional : Warning< "operand of ? changes signedness: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_integer_precision : Warning< "implicit conversion loses integer precision: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_high_order_zero_bits : Warning< "higher order bits are zeroes after implicit conversion">, InGroup, DefaultIgnore; def warn_impcast_nonnegative_result : Warning< "the resulting value is always non-negative after implicit conversion">, InGroup, DefaultIgnore; def warn_impcast_integer_64_32 : Warning< "implicit conversion loses integer precision: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_integer_precision_constant : Warning< "implicit conversion from %2 to %3 changes value from %0 to %1">, InGroup; def warn_impcast_bitfield_precision_constant : Warning< "implicit truncation from %2 to bit-field changes value from %0 to %1">, InGroup; def warn_impcast_constant_value_to_objc_bool : Warning< "implicit conversion from constant value %0 to 'BOOL'; " "the only well defined values for 'BOOL' are YES and NO">, InGroup; def warn_impcast_fixed_point_range : Warning< "implicit conversion from %0 cannot fit within the range of values for %1">, InGroup; def warn_impcast_literal_float_to_integer : Warning< "implicit conversion from %0 to %1 changes value from %2 to %3">, InGroup; def warn_impcast_literal_float_to_integer_out_of_range : Warning< "implicit conversion of out of range value from %0 to %1 is undefined">, InGroup; def warn_impcast_float_integer : Warning< "implicit conversion turns floating-point number into integer: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_float_to_objc_signed_char_bool : Warning< "implicit conversion from floating-point type %0 to 'BOOL'">, InGroup; def warn_impcast_int_to_objc_signed_char_bool : Warning< "implicit conversion from integral type %0 to 'BOOL'">, InGroup, DefaultIgnore; // Implicit int -> float conversion precision loss warnings. def warn_impcast_integer_float_precision : Warning< "implicit conversion from %0 to %1 may lose precision">, InGroup, DefaultIgnore; def warn_impcast_integer_float_precision_constant : Warning< "implicit conversion from %2 to %3 changes value from %0 to %1">, InGroup; def warn_impcast_float_to_integer : Warning< "implicit conversion from %0 to %1 changes value from %2 to %3">, InGroup, DefaultIgnore; def warn_impcast_float_to_integer_out_of_range : Warning< "implicit conversion of out of range value from %0 to %1 is undefined">, InGroup, DefaultIgnore; def warn_impcast_float_to_integer_zero : Warning< "implicit conversion from %0 to %1 changes non-zero value from %2 to %3">, InGroup, DefaultIgnore; def warn_impcast_string_literal_to_bool : Warning< "implicit conversion turns string literal into bool: %0 to %1">, InGroup, DefaultIgnore; def warn_impcast_different_enum_types : Warning< "implicit conversion from enumeration type %0 to different enumeration type " "%1">, InGroup; def warn_impcast_bool_to_null_pointer : Warning< "initialization of pointer of type %0 to null from a constant boolean " "expression">, InGroup; def warn_non_literal_null_pointer : Warning< "expression which evaluates to zero treated as a null pointer constant of " "type %0">, InGroup; def warn_pointer_compare : Warning< "comparing a pointer to a null character constant; did you mean " "to compare to %select{NULL|(void *)0}0?">, InGroup>; def warn_impcast_null_pointer_to_integer : Warning< "implicit conversion of %select{NULL|nullptr}0 constant to %1">, InGroup; def warn_impcast_floating_point_to_bool : Warning< "implicit conversion turns floating-point number into bool: %0 to %1">, InGroup; def ext_ms_impcast_fn_obj : ExtWarn< "implicit conversion between pointer-to-function and pointer-to-object is a " "Microsoft extension">, InGroup; def warn_impcast_pointer_to_bool : Warning< "address of%select{| function| array}0 '%1' will always evaluate to " "'true'">, InGroup; def warn_cast_nonnull_to_bool : Warning< "nonnull %select{function call|parameter}0 '%1' will evaluate to " "'true' on first encounter">, InGroup; def warn_this_bool_conversion : Warning< "'this' pointer cannot be null in well-defined C++ code; pointer may be " "assumed to always convert to true">, InGroup; def warn_address_of_reference_bool_conversion : Warning< "reference cannot be bound to dereferenced null pointer in well-defined C++ " "code; pointer may be assumed to always convert to true">, InGroup; def warn_xor_used_as_pow : Warning< "result of '%0' is %1; did you mean exponentiation?">, InGroup; def warn_xor_used_as_pow_base_extra : Warning< "result of '%0' is %1; did you mean '%2' (%3)?">, InGroup; def warn_xor_used_as_pow_base : Warning< "result of '%0' is %1; did you mean '%2'?">, InGroup; def note_xor_used_as_pow_silence : Note< "replace expression with '%0' %select{|or use 'xor' instead of '^' }1to silence this warning">; def warn_null_pointer_compare : Warning< "comparison of %select{address of|function|array}0 '%1' %select{not |}2" "equal to a null pointer is always %select{true|false}2">, InGroup; def warn_nonnull_expr_compare : Warning< "comparison of nonnull %select{function call|parameter}0 '%1' " "%select{not |}2equal to a null pointer is '%select{true|false}2' on first " "encounter">, InGroup; def warn_this_null_compare : Warning< "'this' pointer cannot be null in well-defined C++ code; comparison may be " "assumed to always evaluate to %select{true|false}0">, InGroup; def warn_address_of_reference_null_compare : Warning< "reference cannot be bound to dereferenced null pointer in well-defined C++ " "code; comparison may be assumed to always evaluate to " "%select{true|false}0">, InGroup; def note_reference_is_return_value : Note<"%0 returns a reference">; def note_pointer_declared_here : Note< "pointer %0 declared here">; def warn_division_sizeof_ptr : Warning< "'%0' will return the size of the pointer, not the array itself">, InGroup>; def warn_division_sizeof_array : Warning< "expression does not compute the number of elements in this array; element " "type is %0, not %1">, InGroup>; def note_function_warning_silence : Note< "prefix with the address-of operator to silence this warning">; def note_function_to_function_call : Note< "suffix with parentheses to turn this into a function call">; def warn_impcast_objective_c_literal_to_bool : Warning< "implicit boolean conversion of Objective-C object literal always " "evaluates to true">, InGroup; def warn_cast_align : Warning< "cast from %0 to %1 increases required alignment from %2 to %3">, InGroup, DefaultIgnore; def warn_old_style_cast : Warning< "use of old-style cast">, InGroup, DefaultIgnore; // Separate between casts to void* and non-void* pointers. // Some APIs use (abuse) void* for something like a user context, // and often that value is an integer even if it isn't a pointer itself. // Having a separate warning flag allows users to control the warning // for their workflow. def warn_int_to_pointer_cast : Warning< "cast to %1 from smaller integer type %0">, InGroup; def warn_int_to_void_pointer_cast : Warning< "cast to %1 from smaller integer type %0">, InGroup; def warn_pointer_to_int_cast : Warning< "cast to smaller integer type %1 from %0">, InGroup; def warn_pointer_to_enum_cast : Warning< warn_pointer_to_int_cast.Text>, InGroup; def warn_void_pointer_to_int_cast : Warning< "cast to smaller integer type %1 from %0">, InGroup; def warn_void_pointer_to_enum_cast : Warning< warn_void_pointer_to_int_cast.Text>, InGroup; def warn_attribute_ignored_for_field_of_type : Warning< "%0 attribute ignored for field of type %1">, InGroup; def warn_no_underlying_type_specified_for_enum_bitfield : Warning< "enums in the Microsoft ABI are signed integers by default; consider giving " "the enum %0 an unsigned underlying type to make this code portable">, InGroup, DefaultIgnore; def warn_attribute_packed_for_bitfield : Warning< "'packed' attribute was ignored on bit-fields with single-byte alignment " "in older versions of GCC and Clang">, InGroup>; def warn_transparent_union_attribute_field_size_align : Warning< "%select{alignment|size}0 of field %1 (%2 bits) does not match the " "%select{alignment|size}0 of the first field in transparent union; " "transparent_union attribute ignored">, InGroup; def note_transparent_union_first_field_size_align : Note< "%select{alignment|size}0 of first field is %1 bits">; def warn_transparent_union_attribute_not_definition : Warning< "transparent_union attribute can only be applied to a union definition; " "attribute ignored">, InGroup; def warn_transparent_union_attribute_floating : Warning< "first field of a transparent union cannot have %select{floating point|" "vector}0 type %1; transparent_union attribute ignored">, InGroup; def warn_transparent_union_attribute_zero_fields : Warning< "transparent union definition must contain at least one field; " "transparent_union attribute ignored">, InGroup; def warn_attribute_type_not_supported : Warning< "%0 attribute argument not supported: %1">, InGroup; def warn_attribute_unknown_visibility : Warning<"unknown visibility %0">, InGroup; def warn_attribute_protected_visibility : Warning<"target does not support 'protected' visibility; using 'default'">, InGroup>; def err_mismatched_visibility: Error<"visibility does not match previous declaration">; def note_previous_attribute : Note<"previous attribute is here">; def note_conflicting_attribute : Note<"conflicting attribute is here">; def note_attribute : Note<"attribute is here">; def err_mismatched_ms_inheritance : Error< "inheritance model does not match %select{definition|previous declaration}0">; def warn_ignored_ms_inheritance : Warning< "inheritance model ignored on %select{primary template|partial specialization}0">, InGroup; def note_previous_ms_inheritance : Note< "previous inheritance model specified here">; def err_machine_mode : Error<"%select{unknown|unsupported}0 machine mode %1">; def err_mode_not_primitive : Error< "mode attribute only supported for integer and floating-point types">; def err_mode_wrong_type : Error< "type of machine mode does not match type of base type">; def warn_vector_mode_deprecated : Warning< "specifying vector types with the 'mode' attribute is deprecated; " "use the 'vector_size' attribute instead">, InGroup; def err_complex_mode_vector_type : Error< "type of machine mode does not support base vector types">; def err_enum_mode_vector_type : Error< "mode %0 is not supported for enumeration types">; def warn_attribute_nonnull_no_pointers : Warning< "'nonnull' attribute applied to function with no pointer arguments">, InGroup; def warn_attribute_nonnull_parm_no_args : Warning< "'nonnull' attribute when used on parameters takes no arguments">, InGroup; def note_declared_nonnull : Note< "declared %select{'returns_nonnull'|'nonnull'}0 here">; def warn_attribute_sentinel_named_arguments : Warning< "'sentinel' attribute requires named arguments">, InGroup; def warn_attribute_sentinel_not_variadic : Warning< "'sentinel' attribute only supported for variadic %select{functions|blocks}0">, InGroup; def err_attribute_sentinel_less_than_zero : Error< "'sentinel' parameter 1 less than zero">; def err_attribute_sentinel_not_zero_or_one : Error< "'sentinel' parameter 2 not 0 or 1">; def warn_cleanup_ext : Warning< "GCC does not allow the 'cleanup' attribute argument to be anything other " "than a simple identifier">, InGroup; def err_attribute_cleanup_arg_not_function : Error< "'cleanup' argument %select{|%1 |%1 }0is not a %select{||single }0function">; def err_attribute_cleanup_func_must_take_one_arg : Error< "'cleanup' function %0 must take 1 parameter">; def err_attribute_cleanup_func_arg_incompatible_type : Error< "'cleanup' function %0 parameter has " "%diff{type $ which is incompatible with type $|incompatible type}1,2">; def err_attribute_regparm_wrong_platform : Error< "'regparm' is not valid on this platform">; def err_attribute_regparm_invalid_number : Error< "'regparm' parameter must be between 0 and %0 inclusive">; def err_attribute_not_supported_in_lang : Error< "%0 attribute is not supported in %select{C|C++|Objective-C}1">; def err_attribute_not_supported_on_arch : Error<"%0 attribute is not supported on '%1'">; def warn_gcc_ignores_type_attr : Warning< "GCC does not allow the %0 attribute to be written on a type">, InGroup; // Clang-Specific Attributes def warn_attribute_iboutlet : Warning< "%0 attribute can only be applied to instance variables or properties">, InGroup; def err_iboutletcollection_type : Error< "invalid type %0 as argument of iboutletcollection attribute">; def err_iboutletcollection_builtintype : Error< "type argument of iboutletcollection attribute cannot be a builtin type">; def warn_iboutlet_object_type : Warning< "%select{instance variable|property}2 with %0 attribute must " "be an object type (invalid %1)">, InGroup; def warn_iboutletcollection_property_assign : Warning< "IBOutletCollection properties should be copy/strong and not assign">, InGroup; def err_attribute_overloadable_mismatch : Error< "redeclaration of %0 must %select{not |}1have the 'overloadable' attribute">; def note_attribute_overloadable_prev_overload : Note< "previous %select{unmarked |}0overload of function is here">; def err_attribute_overloadable_no_prototype : Error< "'overloadable' function %0 must have a prototype">; def err_attribute_overloadable_multiple_unmarked_overloads : Error< "at most one overload for a given name may lack the 'overloadable' " "attribute">; def warn_attribute_no_builtin_invalid_builtin_name : Warning< "'%0' is not a valid builtin name for %1">, InGroup>; def err_attribute_no_builtin_wildcard_or_builtin_name : Error< "empty %0 cannot be composed with named ones">; def err_attribute_no_builtin_on_non_definition : Error< "%0 attribute is permitted on definitions only">; def err_attribute_no_builtin_on_defaulted_deleted_function : Error< "%0 attribute has no effect on defaulted or deleted functions">; def warn_ns_attribute_wrong_return_type : Warning< "%0 attribute only applies to %select{functions|methods|properties}1 that " "return %select{an Objective-C object|a pointer|a non-retainable pointer}2">, InGroup; def err_ns_attribute_wrong_parameter_type : Error< "%0 attribute only applies to " "%select{Objective-C object|pointer|pointer-to-CF-pointer}1 parameters">; def warn_ns_attribute_wrong_parameter_type : Warning< "%0 attribute only applies to " "%select{Objective-C object|pointer|pointer-to-CF-pointer|pointer/reference-to-OSObject-pointer}1 parameters">, InGroup; def warn_objc_requires_super_protocol : Warning< "%0 attribute cannot be applied to %select{methods in protocols|dealloc}1">, InGroup>; def note_protocol_decl : Note< "protocol is declared here">; def note_protocol_decl_undefined : Note< "protocol %0 has no definition">; def err_attribute_preferred_name_arg_invalid : Error< "argument %0 to 'preferred_name' attribute is not a typedef for " "a specialization of %1">; // called-once attribute diagnostics. def err_called_once_attribute_wrong_type : Error< "'called_once' attribute only applies to function-like parameters">; def warn_completion_handler_never_called : Warning< "%select{|captured }1completion handler is never called">, InGroup, DefaultIgnore; def warn_called_once_never_called : Warning< "%select{|captured }1%0 parameter marked 'called_once' is never called">, InGroup; def warn_completion_handler_never_called_when : Warning< "completion handler is never %select{used|called}1 when " "%select{taking true branch|taking false branch|" "handling this case|none of the cases applies|" "entering the loop|skipping the loop|taking one of the branches}2">, InGroup, DefaultIgnore; def warn_called_once_never_called_when : Warning< "%0 parameter marked 'called_once' is never %select{used|called}1 when " "%select{taking true branch|taking false branch|" "handling this case|none of the cases applies|" "entering the loop|skipping the loop|taking one of the branches}2">, InGroup; def warn_completion_handler_called_twice : Warning< "completion handler is called twice">, InGroup, DefaultIgnore; def warn_called_once_gets_called_twice : Warning< "%0 parameter marked 'called_once' is called twice">, InGroup; def note_called_once_gets_called_twice : Note< "previous call is here%select{; set to nil to indicate " "it cannot be called afterwards|}0">; // objc_designated_initializer attribute diagnostics. def warn_objc_designated_init_missing_super_call : Warning< "designated initializer missing a 'super' call to a designated initializer of the super class">, InGroup; def note_objc_designated_init_marked_here : Note< "method marked as designated initializer of the class here">; def warn_objc_designated_init_non_super_designated_init_call : Warning< "designated initializer should only invoke a designated initializer on 'super'">, InGroup; def warn_objc_designated_init_non_designated_init_call : Warning< "designated initializer invoked a non-designated initializer">, InGroup; def warn_objc_secondary_init_super_init_call : Warning< "convenience initializer should not invoke an initializer on 'super'">, InGroup; def warn_objc_secondary_init_missing_init_call : Warning< "convenience initializer missing a 'self' call to another initializer">, InGroup; def warn_objc_implementation_missing_designated_init_override : Warning< "method override for the designated initializer of the superclass %objcinstance0 not found">, InGroup; def err_designated_init_attr_non_init : Error< "'objc_designated_initializer' attribute only applies to init methods " "of interface or class extension declarations">; // objc_bridge attribute diagnostics. def err_objc_attr_not_id : Error< "parameter of %0 attribute must be a single name of an Objective-C %select{class|protocol}1">; def err_objc_attr_typedef_not_id : Error< "parameter of %0 attribute must be 'id' when used on a typedef">; def err_objc_attr_typedef_not_void_pointer : Error< "'objc_bridge(id)' is only allowed on structs and typedefs of void pointers">; def err_objc_cf_bridged_not_interface : Error< "CF object of type %0 is bridged to %1, which is not an Objective-C class">; def err_objc_ns_bridged_invalid_cfobject : Error< "ObjectiveC object of type %0 is bridged to %1, which is not valid CF object">; def warn_objc_invalid_bridge : Warning< "%0 bridges to %1, not %2">, InGroup; def warn_objc_invalid_bridge_to_cf : Warning< "%0 cannot bridge to %1">, InGroup; // objc_bridge_related attribute diagnostics. def err_objc_bridged_related_invalid_class : Error< "could not find Objective-C class %0 to convert %1 to %2">; def err_objc_bridged_related_invalid_class_name : Error< "%0 must be name of an Objective-C class to be able to convert %1 to %2">; def err_objc_bridged_related_known_method : Error< "%0 must be explicitly converted to %1; use %select{%objcclass2|%objcinstance2}3 " "method for this conversion">; def err_objc_attr_protocol_requires_definition : Error< "attribute %0 can only be applied to @protocol definitions, not forward declarations">; // Swift attributes. def warn_attr_swift_name_function : Warning<"%0 attribute argument must be a string literal specifying a Swift function name">, InGroup; def warn_attr_swift_name_invalid_identifier : Warning<"%0 attribute has invalid identifier for the %select{base|context|parameter}1 name">, InGroup; def warn_attr_swift_name_decl_kind : Warning<"%0 attribute cannot be applied to this declaration">, InGroup; def warn_attr_swift_name_subscript_invalid_parameter : Warning<"%0 attribute for 'subscript' must %select{be a getter or setter|" "have at least one parameter|" "have a 'self:' parameter}1">, InGroup; def warn_attr_swift_name_missing_parameters : Warning<"%0 attribute is missing parameter label clause">, InGroup; def warn_attr_swift_name_setter_parameters : Warning<"%0 attribute for setter must have one parameter for new value">, InGroup; def warn_attr_swift_name_multiple_selfs : Warning<"%0 attribute cannot specify more than one 'self:' parameter">, InGroup; def warn_attr_swift_name_getter_parameters : Warning<"%0 attribute for getter must not have any parameters besides 'self:'">, InGroup; def warn_attr_swift_name_subscript_setter_no_newValue : Warning<"%0 attribute for 'subscript' setter must have a 'newValue:' parameter">, InGroup; def warn_attr_swift_name_subscript_setter_multiple_newValues : Warning<"%0 attribute for 'subscript' setter cannot have multiple 'newValue:' parameters">, InGroup; def warn_attr_swift_name_subscript_getter_newValue : Warning<"%0 attribute for 'subscript' getter cannot have a 'newValue:' parameter">, InGroup; def warn_attr_swift_name_num_params : Warning<"too %select{few|many}0 parameters in the signature specified by " "the %1 attribute (expected %2; got %3)">, InGroup; def warn_attr_swift_name_decl_missing_params : Warning<"%0 attribute cannot be applied to a %select{function|method}1 " "with no parameters">, InGroup; def err_attr_swift_error_no_error_parameter : Error< "%0 attribute can only be applied to a %select{function|method}1 with an " "error parameter">; def err_attr_swift_error_return_type : Error< "%0 attribute with '%1' convention can only be applied to a " "%select{function|method}2 returning %select{an integral type|a pointer}3">; def err_swift_async_no_access : Error< "first argument to 'swift_async' must be either 'none', 'swift_private', or " "'not_swift_private'">; def err_swift_async_bad_block_type : Error< "'swift_async' completion handler parameter must have block type returning" " 'void', type here is %0">; def warn_ignored_objc_externally_retained : Warning< "'objc_externally_retained' can only be applied to local variables " "%select{of retainable type|with strong ownership}0">, InGroup; // Function Parameter Semantic Analysis. def err_param_with_void_type : Error<"argument may not have 'void' type">; def err_void_only_param : Error< "'void' must be the first and only parameter if specified">; def err_void_param_qualified : Error< "'void' as parameter must not have type qualifiers">; def err_ident_list_in_fn_declaration : Error< "a parameter list without types is only allowed in a function definition">; def ext_param_not_declared : Extension< "parameter %0 was not declared, defaulting to type 'int'">; def err_param_default_argument : Error< "C does not support default arguments">; def err_param_default_argument_redefinition : Error< "redefinition of default argument">; def ext_param_default_argument_redefinition : ExtWarn< err_param_default_argument_redefinition.Text>, InGroup; def err_param_default_argument_missing : Error< "missing default argument on parameter">; def err_param_default_argument_missing_name : Error< "missing default argument on parameter %0">; def err_param_default_argument_references_param : Error< "default argument references parameter %0">; def err_param_default_argument_references_local : Error< "default argument references local variable %0 of enclosing function">; def err_param_default_argument_references_this : Error< "default argument references 'this'">; def err_param_default_argument_nonfunc : Error< "default arguments can only be specified for parameters in a function " "declaration">; def err_param_default_argument_template_redecl : Error< "default arguments cannot be added to a function template that has already " "been declared">; def err_param_default_argument_member_template_redecl : Error< "default arguments cannot be added to an out-of-line definition of a member " "of a %select{class template|class template partial specialization|nested " "class in a template}0">; def err_param_default_argument_on_parameter_pack : Error< "parameter pack cannot have a default argument">; def err_uninitialized_member_for_assign : Error< "cannot define the implicit copy assignment operator for %0, because " "non-static %select{reference|const}1 member %2 cannot use copy " "assignment operator">; def err_uninitialized_member_in_ctor : Error< "%select{constructor for %1|" "implicit default constructor for %1|" "cannot use constructor inherited from %1:}0 must explicitly " "initialize the %select{reference|const}2 member %3">; def err_default_arg_makes_ctor_special : Error< "addition of default argument on redeclaration makes this constructor a " "%select{default|copy|move}0 constructor">; def err_use_of_default_argument_to_function_declared_later : Error< "use of default argument to function %0 that is declared later in class %1">; def note_default_argument_declared_here : Note< "default argument declared here">; def err_recursive_default_argument : Error<"recursive evaluation of default argument">; def note_recursive_default_argument_used_here : Note< "default argument used here">; def ext_param_promoted_not_compatible_with_prototype : ExtWarn< "%diff{promoted type $ of K&R function parameter is not compatible with the " "parameter type $|promoted type of K&R function parameter is not compatible " "with parameter type}0,1 declared in a previous prototype">, InGroup; // C++ Overloading Semantic Analysis. def err_ovl_diff_return_type : Error< "functions that differ only in their return type cannot be overloaded">; def err_ovl_static_nonstatic_member : Error< "static and non-static member functions with the same parameter types " "cannot be overloaded">; let Deferrable = 1 in { def err_ovl_no_viable_function_in_call : Error< "no matching function for call to %0">; def err_ovl_no_viable_member_function_in_call : Error< "no matching member function for call to %0">; def err_ovl_ambiguous_call : Error< "call to %0 is ambiguous">; def err_ovl_deleted_call : Error<"call to deleted function %0">; def err_ovl_ambiguous_member_call : Error< "call to member function %0 is ambiguous">; def err_ovl_deleted_member_call : Error< "call to deleted member function %0">; def note_ovl_too_many_candidates : Note< "remaining %0 candidate%s0 omitted; " "pass -fshow-overloads=all to show them">; def select_ovl_candidate_kind : TextSubstitution< "%select{function|function|function (with reversed parameter order)|" "constructor|" "constructor (the implicit default constructor)|" "constructor (the implicit copy constructor)|" "constructor (the implicit move constructor)|" "function (the implicit copy assignment operator)|" "function (the implicit move assignment operator)|" "function (the implicit 'operator==' for this 'operator<=>)'|" "inherited constructor}0%select{| template| %2}1">; def note_ovl_candidate : Note< "candidate %sub{select_ovl_candidate_kind}0,1,3" "%select{| has different class%diff{ (expected $ but has $)|}5,6" "| has different number of parameters (expected %5 but has %6)" "| has type mismatch at %ordinal5 parameter" "%diff{ (expected $ but has $)|}6,7" "| has different return type%diff{ ($ expected but has $)|}5,6" "| has different qualifiers (expected %5 but found %6)" "| has different exception specification}4">; def note_ovl_candidate_explicit : Note< "explicit %select{constructor|conversion function|deduction guide}0 " "is not a candidate%select{| (explicit specifier evaluates to true)}1">; def note_ovl_candidate_inherited_constructor : Note< "constructor from base class %0 inherited here">; def note_ovl_candidate_inherited_constructor_slice : Note< "candidate %select{constructor|template}0 ignored: " "inherited constructor cannot be used to %select{copy|move}1 object">; def note_ovl_candidate_illegal_constructor : Note< "candidate %select{constructor|template}0 ignored: " "instantiation %select{takes|would take}0 its own class type by value">; def note_ovl_candidate_illegal_constructor_adrspace_mismatch : Note< "candidate constructor ignored: cannot be used to construct an object " "in address space %0">; def note_ovl_candidate_bad_deduction : Note< "candidate template ignored: failed template argument deduction">; def note_ovl_candidate_incomplete_deduction : Note<"candidate template ignored: " "couldn't infer template argument %0">; def note_ovl_candidate_incomplete_deduction_pack : Note< "candidate template ignored: " "deduced too few arguments for expanded pack %0; no argument for %ordinal1 " "expanded parameter in deduced argument pack %2">; def note_ovl_candidate_inconsistent_deduction : Note< "candidate template ignored: deduced %select{conflicting types|" "conflicting values|conflicting templates|packs of different lengths}0 " "for parameter %1%diff{ ($ vs. $)|}2,3">; def note_ovl_candidate_inconsistent_deduction_types : Note< "candidate template ignored: deduced values %diff{" "of conflicting types for parameter %0 (%1 of type $ vs. %3 of type $)|" "%1 and %3 of conflicting types for parameter %0}2,4">; def note_ovl_candidate_explicit_arg_mismatch_named : Note< "candidate template ignored: invalid explicitly-specified argument " "for template parameter %0">; def note_ovl_candidate_unsatisfied_constraints : Note< "candidate template ignored: constraints not satisfied%0">; def note_ovl_candidate_explicit_arg_mismatch_unnamed : Note< "candidate template ignored: invalid explicitly-specified argument " "for %ordinal0 template parameter">; def note_ovl_candidate_instantiation_depth : Note< "candidate template ignored: substitution exceeded maximum template " "instantiation depth">; def note_ovl_candidate_underqualified : Note< "candidate template ignored: cannot deduce a type for %0 that would " "make %2 equal %1">; def note_ovl_candidate_substitution_failure : Note< "candidate template ignored: substitution failure%0%1">; def note_ovl_candidate_disabled_by_enable_if : Note< "candidate template ignored: disabled by %0%1">; def note_ovl_candidate_disabled_by_requirement : Note< "candidate template ignored: requirement '%0' was not satisfied%1">; def note_ovl_candidate_has_pass_object_size_params: Note< "candidate address cannot be taken because parameter %0 has " "pass_object_size attribute">; def err_diagnose_if_succeeded : Error<"%0">; def warn_diagnose_if_succeeded : Warning<"%0">, InGroup, ShowInSystemHeader; def note_ovl_candidate_disabled_by_function_cond_attr : Note< "candidate disabled: %0">; def note_ovl_candidate_disabled_by_extension : Note< "candidate unavailable as it requires OpenCL extension '%0' to be enabled">; def err_addrof_function_disabled_by_enable_if_attr : Error< "cannot take address of function %0 because it has one or more " "non-tautological enable_if conditions">; def err_addrof_function_constraints_not_satisfied : Error< "cannot take address of function %0 because its constraints are not " "satisfied">; def note_addrof_ovl_candidate_disabled_by_enable_if_attr : Note< "candidate function made ineligible by enable_if">; def note_ovl_candidate_deduced_mismatch : Note< "candidate template ignored: deduced type " "%diff{$ of %select{|element of }4%ordinal0 parameter does not match " "adjusted type $ of %select{|element of }4argument" "|of %select{|element of }4%ordinal0 parameter does not match " "adjusted type of %select{|element of }4argument}1,2%3">; def note_ovl_candidate_non_deduced_mismatch : Note< "candidate template ignored: could not match %diff{$ against $|types}0,1">; // This note is needed because the above note would sometimes print two // different types with the same name. Remove this note when the above note // can handle that case properly. def note_ovl_candidate_non_deduced_mismatch_qualified : Note< "candidate template ignored: could not match %q0 against %q1">; // Note that we don't treat templates differently for this diagnostic. def note_ovl_candidate_arity : Note<"candidate " "%sub{select_ovl_candidate_kind}0,1,2 not viable: " "requires%select{ at least| at most|}3 %4 argument%s4, but %5 " "%plural{1:was|:were}5 provided">; def note_ovl_candidate_arity_one : Note<"candidate " "%sub{select_ovl_candidate_kind}0,1,2 not viable: " "%select{requires at least|allows at most single|requires single}3 " "argument %4, but %plural{0:no|:%5}5 arguments were provided">; def note_ovl_candidate_deleted : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 has been " "%select{explicitly made unavailable|explicitly deleted|" "implicitly deleted}3">; // Giving the index of the bad argument really clutters this message, and // it's relatively unimportant because 1) it's generally obvious which // argument(s) are of the given object type and 2) the fix is usually // to complete the type, which doesn't involve changes to the call line // anyway. If people complain, we can change it. def note_ovl_candidate_bad_conv_incomplete : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "cannot convert argument of incomplete type " "%diff{$ to $|to parameter type}3,4 for " "%select{%ordinal6 argument|object argument}5" "%select{|; dereference the argument with *|" "; take the address of the argument with &|" "; remove *|" "; remove &}7">; def note_ovl_candidate_bad_list_argument : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "cannot convert initializer list argument to %4">; def note_ovl_candidate_bad_overload : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "no overload of %4 matching %3 for %ordinal5 argument">; def note_ovl_candidate_bad_conv : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "no known conversion " "%diff{from $ to $|from argument type to parameter type}3,4 for " "%select{%ordinal6 argument|object argument}5" "%select{|; dereference the argument with *|" "; take the address of the argument with &|" "; remove *|" "; remove &}7">; def note_ovl_candidate_bad_arc_conv : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "cannot implicitly convert argument " "%diff{of type $ to $|type to parameter type}3,4 for " "%select{%ordinal6 argument|object argument}5 under ARC">; def note_ovl_candidate_bad_value_category : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "expects an %select{lvalue|rvalue}5 for " "%select{%ordinal4 argument|object argument}3">; def note_ovl_candidate_bad_addrspace : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "cannot %select{pass pointer to|bind reference in}5 %3 " "%select{as a pointer to|to object in}5 %4 in %ordinal6 " "argument">; def note_ovl_candidate_bad_addrspace_this : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "'this' object is in %3, but method expects object in %4">; def note_ovl_candidate_bad_gc : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "%select{%ordinal7|'this'}6 argument (%3) has %select{no|__weak|__strong}4 " "ownership, but parameter has %select{no|__weak|__strong}5 ownership">; def note_ovl_candidate_bad_ownership : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "%select{%ordinal7|'this'}6 argument (%3) has " "%select{no|__unsafe_unretained|__strong|__weak|__autoreleasing}4 ownership," " but parameter has %select{no|__unsafe_unretained|__strong|__weak|" "__autoreleasing}5 ownership">; def note_ovl_candidate_bad_cvr_this : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "'this' argument has type %3, but method is not marked " "%select{const|restrict|const or restrict|volatile|const or volatile|" "volatile or restrict|const, volatile, or restrict}4">; def note_ovl_candidate_bad_cvr : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "%ordinal5 argument (%3) would lose " "%select{const|restrict|const and restrict|volatile|const and volatile|" "volatile and restrict|const, volatile, and restrict}4 qualifier" "%select{||s||s|s|s}4">; def note_ovl_candidate_bad_unaligned : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "%ordinal5 argument (%3) would lose __unaligned qualifier">; def note_ovl_candidate_bad_base_to_derived_conv : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "cannot %select{convert from|convert from|bind}3 " "%select{base class pointer|superclass|base class object of type}3 %4 to " "%select{derived class pointer|subclass|derived class reference}3 %5 for " "%ordinal6 argument">; def note_ovl_candidate_bad_target : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: " "call to " "%select{__device__|__global__|__host__|__host__ __device__|invalid}3 function from" " %select{__device__|__global__|__host__|__host__ __device__|invalid}4 function">; def note_ovl_candidate_constraints_not_satisfied : Note< "candidate %sub{select_ovl_candidate_kind}0,1,2 not viable: constraints " "not satisfied">; def note_implicit_member_target_infer_collision : Note< "implicit %sub{select_special_member_kind}0 inferred target collision: call to both " "%select{__device__|__global__|__host__|__host__ __device__}1 and " "%select{__device__|__global__|__host__|__host__ __device__}2 members">; def note_ambiguous_type_conversion: Note< "because of ambiguity in conversion %diff{of $ to $|between types}0,1">; def note_ovl_builtin_candidate : Note<"built-in candidate %0">; def err_ovl_no_viable_function_in_init : Error< "no matching constructor for initialization of %0">; def err_ovl_no_conversion_in_cast : Error< "cannot convert %1 to %2 without a conversion operator">; def err_ovl_no_viable_conversion_in_cast : Error< "no matching conversion for %select{|static_cast|reinterpret_cast|" "dynamic_cast|C-style cast|functional-style cast|}0 from %1 to %2">; def err_ovl_ambiguous_conversion_in_cast : Error< "ambiguous conversion for %select{|static_cast|reinterpret_cast|" "dynamic_cast|C-style cast|functional-style cast|}0 from %1 to %2">; def err_ovl_deleted_conversion_in_cast : Error< "%select{|static_cast|reinterpret_cast|dynamic_cast|C-style cast|" "functional-style cast|}0 from %1 to %2 uses deleted function">; def err_ovl_ambiguous_init : Error<"call to constructor of %0 is ambiguous">; def err_ref_init_ambiguous : Error< "reference initialization of type %0 with initializer of type %1 is ambiguous">; def err_ovl_deleted_init : Error< "call to deleted constructor of %0">; def err_ovl_deleted_special_init : Error< "call to implicitly-deleted %select{default constructor|copy constructor|" "move constructor|copy assignment operator|move assignment operator|" "destructor|function}0 of %1">; def err_ovl_ambiguous_oper_unary : Error< "use of overloaded operator '%0' is ambiguous (operand type %1)">; def err_ovl_ambiguous_oper_binary : Error< "use of overloaded operator '%0' is ambiguous (with operand types %1 and %2)">; def ext_ovl_ambiguous_oper_binary_reversed : ExtWarn< "ISO C++20 considers use of overloaded operator '%0' (with operand types %1 " "and %2) to be ambiguous despite there being a unique best viable function" "%select{ with non-reversed arguments|}3">, InGroup>, SFINAEFailure; def note_ovl_ambiguous_oper_binary_reversed_self : Note< "ambiguity is between a regular call to this operator and a call with the " "argument order reversed">; def note_ovl_ambiguous_oper_binary_selected_candidate : Note< "candidate function with non-reversed arguments">; def note_ovl_ambiguous_oper_binary_reversed_candidate : Note< "ambiguous candidate function with reversed arguments">; def err_ovl_no_viable_oper : Error<"no viable overloaded '%0'">; def note_assign_lhs_incomplete : Note<"type %0 is incomplete">; def err_ovl_deleted_oper : Error< "overload resolution selected deleted operator '%0'">; def err_ovl_deleted_special_oper : Error< "object of type %0 cannot be %select{constructed|copied|moved|assigned|" "assigned|destroyed}1 because its %sub{select_special_member_kind}1 is " "implicitly deleted">; def err_ovl_deleted_comparison : Error< "object of type %0 cannot be compared because its %1 is implicitly deleted">; def err_ovl_rewrite_equalequal_not_bool : Error< "return type %0 of selected 'operator==' function for rewritten " "'%1' comparison is not 'bool'">; def ext_ovl_rewrite_equalequal_not_bool : ExtWarn< "ISO C++20 requires return type of selected 'operator==' function for " "rewritten '%1' comparison to be 'bool', not %0">, InGroup>, SFINAEFailure; def err_ovl_no_viable_subscript : Error<"no viable overloaded operator[] for type %0">; def err_ovl_no_oper : Error<"type %0 does not provide a %select{subscript|call}1 operator">; def err_ovl_unresolvable : Error< "reference to %select{overloaded|multiversioned}1 function could not be " "resolved; did you mean to call it%select{| with no arguments}0?">; def err_bound_member_function : Error< "reference to non-static member function must be called" "%select{|; did you mean to call it with no arguments?}0">; def note_possible_target_of_call : Note<"possible target for call">; def err_ovl_no_viable_object_call : Error< "no matching function for call to object of type %0">; def err_ovl_ambiguous_object_call : Error< "call to object of type %0 is ambiguous">; def err_ovl_deleted_object_call : Error< "call to deleted function call operator in type %0">; def note_ovl_surrogate_cand : Note<"conversion candidate of type %0">; def err_member_call_without_object : Error< "call to non-static member function without an object argument">; // C++ Address of Overloaded Function def err_addr_ovl_no_viable : Error< "address of overloaded function %0 does not match required type %1">; def err_addr_ovl_ambiguous : Error< "address of overloaded function %0 is ambiguous">; def err_addr_ovl_not_func_ptrref : Error< "address of overloaded function %0 cannot be converted to type %1">; def err_addr_ovl_no_qualifier : Error< "cannot form member pointer of type %0 without '&' and class name">; } // let Deferrable // C++11 Literal Operators def err_ovl_no_viable_literal_operator : Error< "no matching literal operator for call to %0" "%select{| with argument of type %2| with arguments of types %2 and %3}1" "%select{| or 'const char *'}4" "%select{|, and no matching literal operator template}5">; // C++ Template Declarations def err_template_param_shadow : Error< "declaration of %0 shadows template parameter">; def ext_template_param_shadow : ExtWarn< err_template_param_shadow.Text>, InGroup; def note_template_param_here : Note<"template parameter is declared here">; def warn_template_export_unsupported : Warning< "exported templates are unsupported">; def err_template_outside_namespace_or_class_scope : Error< "templates can only be declared in namespace or class scope">; def err_template_inside_local_class : Error< "templates cannot be declared inside of a local class">; def err_template_linkage : Error<"templates must have C++ linkage">; def err_template_typedef : Error<"a typedef cannot be a template">; def err_template_unnamed_class : Error< "cannot declare a class template with no name">; def err_template_param_list_different_arity : Error< "%select{too few|too many}0 template parameters in template " "%select{|template parameter }1redeclaration">; def note_template_param_list_different_arity : Note< "%select{too few|too many}0 template parameters in template template " "argument">; def note_template_prev_declaration : Note< "previous template %select{declaration|template parameter}0 is here">; def err_template_param_different_kind : Error< "template parameter has a different kind in template " "%select{|template parameter }0redeclaration">; def note_template_param_different_kind : Note< "template parameter has a different kind in template argument">; def err_invalid_decl_specifier_in_nontype_parm : Error< "invalid declaration specifier in template non-type parameter">; def err_template_nontype_parm_different_type : Error< "template non-type parameter has a different type %0 in template " "%select{|template parameter }1redeclaration">; def note_template_nontype_parm_different_type : Note< "template non-type parameter has a different type %0 in template argument">; def note_template_nontype_parm_prev_declaration : Note< "previous non-type template parameter with type %0 is here">; def err_template_nontype_parm_bad_type : Error< "a non-type template parameter cannot have type %0">; def err_template_nontype_parm_bad_structural_type : Error< "a non-type template parameter cannot have type %0 before C++20">; def err_template_nontype_parm_incomplete : Error< "non-type template parameter has incomplete type %0">; def err_template_nontype_parm_not_literal : Error< "non-type template parameter has non-literal type %0">; def err_template_nontype_parm_rvalue_ref : Error< "non-type template parameter has rvalue reference type %0">; def err_template_nontype_parm_not_structural : Error< "type %0 of non-type template parameter is not a structural type">; def note_not_structural_non_public : Note< "%0 is not a structural type because it has a " "%select{non-static data member|base class}1 that is not public">; def note_not_structural_mutable_field : Note< "%0 is not a structural type because it has a mutable " "non-static data member">; def note_not_structural_rvalue_ref_field : Note< "%0 is not a structural type because it has a non-static data member " "of rvalue reference type">; def note_not_structural_subobject : Note< "%0 is not a structural type because it has a " "%select{non-static data member|base class}1 of non-structural type %2">; def warn_cxx17_compat_template_nontype_parm_type : Warning< "non-type template parameter of type %0 is incompatible with " "C++ standards before C++20">, DefaultIgnore, InGroup; def warn_cxx14_compat_template_nontype_parm_auto_type : Warning< "non-type template parameters declared with %0 are incompatible with C++ " "standards before C++17">, DefaultIgnore, InGroup; def err_template_param_default_arg_redefinition : Error< "template parameter redefines default argument">; def note_template_param_prev_default_arg : Note< "previous default template argument defined here">; def err_template_param_default_arg_missing : Error< "template parameter missing a default argument">; def ext_template_parameter_default_in_function_template : ExtWarn< "default template arguments for a function template are a C++11 extension">, InGroup; def warn_cxx98_compat_template_parameter_default_in_function_template : Warning< "default template arguments for a function template are incompatible with C++98">, InGroup, DefaultIgnore; def err_template_parameter_default_template_member : Error< "cannot add a default template argument to the definition of a member of a " "class template">; def err_template_parameter_default_friend_template : Error< "default template argument not permitted on a friend template">; def err_template_template_parm_no_parms : Error< "template template parameter must have its own template parameters">; def ext_variable_template : ExtWarn<"variable templates are a C++14 extension">, InGroup; def warn_cxx11_compat_variable_template : Warning< "variable templates are incompatible with C++ standards before C++14">, InGroup, DefaultIgnore; def err_template_variable_noparams : Error< "extraneous 'template<>' in declaration of variable %0">; def err_template_member : Error<"member %0 declared as a template">; def err_template_member_noparams : Error< "extraneous 'template<>' in declaration of member %0">; def err_template_tag_noparams : Error< "extraneous 'template<>' in declaration of %0 %1">; def warn_cxx17_compat_adl_only_template_id : Warning< "use of function template name with no prior function template " "declaration in function call with explicit template arguments " "is incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def ext_adl_only_template_id : ExtWarn< "use of function template name with no prior declaration in function call " "with explicit template arguments is a C++20 extension">, InGroup; // C++ Template Argument Lists def err_template_missing_args : Error< "use of " "%select{class template|function template|variable template|alias template|" "template template parameter|concept|template}0 %1 requires template " "arguments">; def err_template_arg_list_different_arity : Error< "%select{too few|too many}0 template arguments for " "%select{class template|function template|variable template|alias template|" "template template parameter|concept|template}1 %2">; def note_template_decl_here : Note<"template is declared here">; def err_template_arg_must_be_type : Error< "template argument for template type parameter must be a type">; def err_template_arg_must_be_type_suggest : Error< "template argument for template type parameter must be a type; " "did you forget 'typename'?">; def ext_ms_template_type_arg_missing_typename : ExtWarn< "template argument for template type parameter must be a type; " "omitted 'typename' is a Microsoft extension">, InGroup; def err_template_arg_must_be_expr : Error< "template argument for non-type template parameter must be an expression">; def err_template_arg_nontype_ambig : Error< "template argument for non-type template parameter is treated as function type %0">; def err_template_arg_must_be_template : Error< "template argument for template template parameter must be a class template%select{| or type alias template}0">; def ext_template_arg_local_type : ExtWarn< "template argument uses local type %0">, InGroup; def ext_template_arg_unnamed_type : ExtWarn< "template argument uses unnamed type">, InGroup; def warn_cxx98_compat_template_arg_local_type : Warning< "local type %0 as template argument is incompatible with C++98">, InGroup, DefaultIgnore; def warn_cxx98_compat_template_arg_unnamed_type : Warning< "unnamed type as template argument is incompatible with C++98">, InGroup, DefaultIgnore; def note_template_unnamed_type_here : Note< "unnamed type used in template argument was declared here">; def err_template_arg_overload_type : Error< "template argument is the type of an unresolved overloaded function">; def err_template_arg_not_valid_template : Error< "template argument does not refer to a class or alias template, or template " "template parameter">; def note_template_arg_refers_here_func : Note< "template argument refers to function template %0, here">; def err_template_arg_template_params_mismatch : Error< "template template argument has different template parameters than its " "corresponding template template parameter">; def err_template_arg_not_integral_or_enumeral : Error< "non-type template argument of type %0 must have an integral or enumeration" " type">; def err_template_arg_not_ice : Error< "non-type template argument of type %0 is not an integral constant " "expression">; def err_template_arg_not_address_constant : Error< "non-type template argument of type %0 is not a constant expression">; def warn_cxx98_compat_template_arg_null : Warning< "use of null pointer as non-type template argument is incompatible with " "C++98">, InGroup, DefaultIgnore; def err_template_arg_untyped_null_constant : Error< "null non-type template argument must be cast to template parameter type %0">; def err_template_arg_wrongtype_null_constant : Error< "null non-type template argument of type %0 does not match template parameter " "of type %1">; def err_non_type_template_parm_type_deduction_failure : Error< "non-type template parameter %0 with type %1 has incompatible initializer of type %2">; def err_deduced_non_type_template_arg_type_mismatch : Error< "deduced non-type template argument does not have the same type as the " "corresponding template parameter%diff{ ($ vs $)|}0,1">; def err_non_type_template_arg_subobject : Error< "non-type template argument refers to subobject '%0'">; def err_non_type_template_arg_addr_label_diff : Error< "template argument / label address difference / what did you expect?">; def err_non_type_template_arg_unsupported : Error< "sorry, non-type template argument of type %0 is not yet supported">; def err_template_arg_not_convertible : Error< "non-type template argument of type %0 cannot be converted to a value " "of type %1">; def warn_template_arg_negative : Warning< "non-type template argument with value '%0' converted to '%1' for unsigned " "template parameter of type %2">, InGroup, DefaultIgnore; def warn_template_arg_too_large : Warning< "non-type template argument value '%0' truncated to '%1' for " "template parameter of type %2">, InGroup, DefaultIgnore; def err_template_arg_no_ref_bind : Error< "non-type template parameter of reference type " "%diff{$ cannot bind to template argument of type $" "|cannot bind to template of incompatible argument type}0,1">; def err_template_arg_ref_bind_ignores_quals : Error< "reference binding of non-type template parameter " "%diff{of type $ to template argument of type $|to template argument}0,1 " "ignores qualifiers">; def err_template_arg_not_decl_ref : Error< "non-type template argument does not refer to any declaration">; def err_template_arg_not_address_of : Error< "non-type template argument for template parameter of pointer type %0 must " "have its address taken">; def err_template_arg_address_of_non_pointer : Error< "address taken in non-type template argument for template parameter of " "reference type %0">; def err_template_arg_reference_var : Error< "non-type template argument of reference type %0 is not an object">; def err_template_arg_field : Error< "non-type template argument refers to non-static data member %0">; def err_template_arg_method : Error< "non-type template argument refers to non-static member function %0">; def err_template_arg_object_no_linkage : Error< "non-type template argument refers to %select{function|object}0 %1 that " "does not have linkage">; def warn_cxx98_compat_template_arg_object_internal : Warning< "non-type template argument referring to %select{function|object}0 %1 with " "internal linkage is incompatible with C++98">, InGroup, DefaultIgnore; def ext_template_arg_object_internal : ExtWarn< "non-type template argument referring to %select{function|object}0 %1 with " "internal linkage is a C++11 extension">, InGroup; def err_template_arg_thread_local : Error< "non-type template argument refers to thread-local object">; def note_template_arg_internal_object : Note< "non-type template argument refers to %select{function|object}0 here">; def note_template_arg_refers_here : Note< "non-type template argument refers here">; def err_template_arg_not_object_or_func : Error< "non-type template argument does not refer to an object or function">; def err_template_arg_not_pointer_to_member_form : Error< "non-type template argument is not a pointer to member constant">; def err_template_arg_member_ptr_base_derived_not_supported : Error< "sorry, non-type template argument of pointer-to-member type %1 that refers " "to member %q0 of a different class is not supported yet">; def ext_template_arg_extra_parens : ExtWarn< "address non-type template argument cannot be surrounded by parentheses">; def warn_cxx98_compat_template_arg_extra_parens : Warning< "redundant parentheses surrounding address non-type template argument are " "incompatible with C++98">, InGroup, DefaultIgnore; def err_pointer_to_member_type : Error< "invalid use of pointer to member type after %select{.*|->*}0">; def err_pointer_to_member_call_drops_quals : Error< "call to pointer to member function of type %0 drops '%1' qualifier%s2">; def err_pointer_to_member_oper_value_classify: Error< "pointer-to-member function type %0 can only be called on an " "%select{rvalue|lvalue}1">; def ext_pointer_to_const_ref_member_on_rvalue : Extension< "invoking a pointer to a 'const &' member function on an rvalue is a C++20 extension">, InGroup, SFINAEFailure; def warn_cxx17_compat_pointer_to_const_ref_member_on_rvalue : Warning< "invoking a pointer to a 'const &' member function on an rvalue is " "incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def ext_ms_deref_template_argument: ExtWarn< "non-type template argument containing a dereference operation is a " "Microsoft extension">, InGroup; def ext_ms_delayed_template_argument: ExtWarn< "using the undeclared type %0 as a default template argument is a " "Microsoft extension">, InGroup; def err_template_arg_deduced_incomplete_pack : Error< "deduced incomplete pack %0 for template parameter %1">; // C++ template specialization def err_template_spec_unknown_kind : Error< "can only provide an explicit specialization for a class template, function " "template, variable template, or a member function, static data member, " "%select{or member class|member class, or member enumeration}0 of a " "class template">; def note_specialized_entity : Note< "explicitly specialized declaration is here">; def note_explicit_specialization_declared_here : Note< "explicit specialization declared here">; def err_template_spec_decl_function_scope : Error< "explicit specialization of %0 in function scope">; def err_template_spec_decl_friend : Error< "cannot declare an explicit specialization in a friend">; def err_template_spec_redecl_out_of_scope : Error< "%select{class template|class template partial|variable template|" "variable template partial|function template|member " "function|static data member|member class|member enumeration}0 " "specialization of %1 not in %select{a namespace enclosing %2|" "class %2 or an enclosing namespace}3">; def ext_ms_template_spec_redecl_out_of_scope: ExtWarn< "%select{class template|class template partial|variable template|" "variable template partial|function template|member " "function|static data member|member class|member enumeration}0 " "specialization of %1 not in %select{a namespace enclosing %2|" "class %2 or an enclosing namespace}3 " "is a Microsoft extension">, InGroup; def err_template_spec_redecl_global_scope : Error< "%select{class template|class template partial|variable template|" "variable template partial|function template|member " "function|static data member|member class|member enumeration}0 " "specialization of %1 must occur at global scope">; def err_spec_member_not_instantiated : Error< "specialization of member %q0 does not specialize an instantiated member">; def note_specialized_decl : Note<"attempt to specialize declaration here">; def err_specialization_after_instantiation : Error< "explicit specialization of %0 after instantiation">; def note_instantiation_required_here : Note< "%select{implicit|explicit}0 instantiation first required here">; def err_template_spec_friend : Error< "template specialization declaration cannot be a friend">; def err_template_spec_default_arg : Error< "default argument not permitted on an explicit " "%select{instantiation|specialization}0 of function %1">; def err_not_class_template_specialization : Error< "cannot specialize a %select{dependent template|template template " "parameter}0">; def ext_explicit_specialization_storage_class : ExtWarn< "explicit specialization cannot have a storage class">; def err_explicit_specialization_inconsistent_storage_class : Error< "explicit specialization has extraneous, inconsistent storage class " "'%select{none|extern|static|__private_extern__|auto|register}0'">; def err_dependent_function_template_spec_no_match : Error< "no candidate function template was found for dependent" " friend function template specialization">; def note_dependent_function_template_spec_discard_reason : Note< "candidate ignored: %select{not a function template" "|not a member of the enclosing namespace;" " did you mean to explicitly qualify the specialization?}0">; // C++ class template specializations and out-of-line definitions def err_template_spec_needs_header : Error< "template specialization requires 'template<>'">; def err_template_spec_needs_template_parameters : Error< "template specialization or definition requires a template parameter list " "corresponding to the nested type %0">; def err_template_param_list_matches_nontemplate : Error< "template parameter list matching the non-templated nested type %0 should " "be empty ('template<>')">; def err_alias_template_extra_headers : Error< "extraneous template parameter list in alias template declaration">; def err_template_spec_extra_headers : Error< "extraneous template parameter list in template specialization or " "out-of-line template definition">; def warn_template_spec_extra_headers : Warning< "extraneous template parameter list in template specialization">; def note_explicit_template_spec_does_not_need_header : Note< "'template<>' header not required for explicitly-specialized class %0 " "declared here">; def err_template_qualified_declarator_no_match : Error< "nested name specifier '%0' for declaration does not refer into a class, " "class template or class template partial specialization">; def err_specialize_member_of_template : Error< "cannot specialize %select{|(with 'template<>') }0a member of an " "unspecialized template">; // C++ Class Template Partial Specialization def err_default_arg_in_partial_spec : Error< "default template argument in a class template partial specialization">; def err_dependent_non_type_arg_in_partial_spec : Error< "type of specialized non-type template argument depends on a template " "parameter of the partial specialization">; def note_dependent_non_type_default_arg_in_partial_spec : Note< "template parameter is used in default argument declared here">; def err_dependent_typed_non_type_arg_in_partial_spec : Error< "non-type template argument specializes a template parameter with " "dependent type %0">; def err_partial_spec_args_match_primary_template : Error< "%select{class|variable}0 template partial specialization does not " "specialize any template argument; to %select{declare|define}1 the " "primary template, remove the template argument list">; def ext_partial_spec_not_more_specialized_than_primary : ExtWarn< "%select{class|variable}0 template partial specialization is not " "more specialized than the primary template">, DefaultError, InGroup>; def note_partial_spec_not_more_specialized_than_primary : Note<"%0">; def ext_partial_specs_not_deducible : ExtWarn< "%select{class|variable}0 template partial specialization contains " "%select{a template parameter|template parameters}1 that cannot be " "deduced; this partial specialization will never be used">, DefaultError, InGroup>; def note_non_deducible_parameter : Note< "non-deducible template parameter %0">; def err_partial_spec_ordering_ambiguous : Error< "ambiguous partial specializations of %0">; def note_partial_spec_match : Note<"partial specialization matches %0">; def err_partial_spec_redeclared : Error< "class template partial specialization %0 cannot be redeclared">; def note_partial_specialization_declared_here : Note< "explicit specialization declared here">; def note_prev_partial_spec_here : Note< "previous declaration of class template partial specialization %0 is here">; def err_partial_spec_fully_specialized : Error< "partial specialization of %0 does not use any of its template parameters">; // C++ Variable Template Partial Specialization def err_var_partial_spec_redeclared : Error< "variable template partial specialization %0 cannot be redefined">; def note_var_prev_partial_spec_here : Note< "previous declaration of variable template partial specialization is here">; def err_var_spec_no_template : Error< "no variable template matches%select{| partial}0 specialization">; def err_var_spec_no_template_but_method : Error< "no variable template matches specialization; " "did you mean to use %0 as function template instead?">; // C++ Function template specializations def err_function_template_spec_no_match : Error< "no function template matches function template specialization %0">; def err_function_template_spec_ambiguous : Error< "function template specialization %0 ambiguously refers to more than one " "function template; explicitly specify%select{| additional}1 template " "arguments to identify a particular function template">; def note_function_template_spec_matched : Note< "function template %q0 matches specialization %1">; def err_function_template_partial_spec : Error< "function template partial specialization is not allowed">; // C++ Template Instantiation def err_template_recursion_depth_exceeded : Error< "recursive template instantiation exceeded maximum depth of %0">, DefaultFatal, NoSFINAE; def note_template_recursion_depth : Note< "use -ftemplate-depth=N to increase recursive template instantiation depth">; def err_template_instantiate_within_definition : Error< "%select{implicit|explicit}0 instantiation of template %1 within its" " own definition">; def err_template_instantiate_undefined : Error< "%select{implicit|explicit}0 instantiation of undefined template %1">; def err_implicit_instantiate_member_undefined : Error< "implicit instantiation of undefined member %0">; def note_template_class_instantiation_was_here : Note< "class template %0 was instantiated here">; def note_template_class_explicit_specialization_was_here : Note< "class template %0 was explicitly specialized here">; def note_template_class_instantiation_here : Note< "in instantiation of template class %q0 requested here">; def note_template_member_class_here : Note< "in instantiation of member class %q0 requested here">; def note_template_member_function_here : Note< "in instantiation of member function %q0 requested here">; def note_function_template_spec_here : Note< "in instantiation of function template specialization %q0 requested here">; def note_template_static_data_member_def_here : Note< "in instantiation of static data member %q0 requested here">; def note_template_variable_def_here : Note< "in instantiation of variable template specialization %q0 requested here">; def note_template_enum_def_here : Note< "in instantiation of enumeration %q0 requested here">; def note_template_nsdmi_here : Note< "in instantiation of default member initializer %q0 requested here">; def note_template_type_alias_instantiation_here : Note< "in instantiation of template type alias %0 requested here">; def note_template_exception_spec_instantiation_here : Note< "in instantiation of exception specification for %0 requested here">; def note_template_requirement_instantiation_here : Note< "in instantiation of requirement here">; def warn_var_template_missing : Warning<"instantiation of variable %q0 " "required here, but no definition is available">, InGroup; def warn_func_template_missing : Warning<"instantiation of function %q0 " "required here, but no definition is available">, InGroup, DefaultIgnore; def note_forward_template_decl : Note< "forward declaration of template entity is here">; def note_inst_declaration_hint : Note<"add an explicit instantiation " "declaration to suppress this warning if %q0 is explicitly instantiated in " "another translation unit">; def note_evaluating_exception_spec_here : Note< "in evaluation of exception specification for %q0 needed here">; def note_default_arg_instantiation_here : Note< "in instantiation of default argument for '%0' required here">; def note_default_function_arg_instantiation_here : Note< "in instantiation of default function argument expression " "for '%0' required here">; def note_explicit_template_arg_substitution_here : Note< "while substituting explicitly-specified template arguments into function " "template %0 %1">; def note_function_template_deduction_instantiation_here : Note< "while substituting deduced template arguments into function template %0 " "%1">; def note_deduced_template_arg_substitution_here : Note< "during template argument deduction for %select{class|variable}0 template " "%select{partial specialization |}1%2 %3">; def note_prior_template_arg_substitution : Note< "while substituting prior template arguments into %select{non-type|template}0" " template parameter%1 %2">; def note_template_default_arg_checking : Note< "while checking a default template argument used here">; def note_concept_specialization_here : Note< "while checking the satisfaction of concept '%0' requested here">; def note_nested_requirement_here : Note< "while checking the satisfaction of nested requirement requested here">; def note_checking_constraints_for_template_id_here : Note< "while checking constraint satisfaction for template '%0' required here">; def note_checking_constraints_for_var_spec_id_here : Note< "while checking constraint satisfaction for variable template " "partial specialization '%0' required here">; def note_checking_constraints_for_class_spec_id_here : Note< "while checking constraint satisfaction for class template partial " "specialization '%0' required here">; def note_checking_constraints_for_function_here : Note< "while checking constraint satisfaction for function '%0' required here">; def note_constraint_substitution_here : Note< "while substituting template arguments into constraint expression here">; def note_constraint_normalization_here : Note< "while calculating associated constraint of template '%0' here">; def note_parameter_mapping_substitution_here : Note< "while substituting into concept arguments here; substitution failures not " "allowed in concept arguments">; def note_instantiation_contexts_suppressed : Note< "(skipping %0 context%s0 in backtrace; use -ftemplate-backtrace-limit=0 to " "see all)">; def err_field_instantiates_to_function : Error< "data member instantiated with function type %0">; def err_variable_instantiates_to_function : Error< "%select{variable|static data member}0 instantiated with function type %1">; def err_nested_name_spec_non_tag : Error< "type %0 cannot be used prior to '::' because it has no members">; def err_using_pack_expansion_empty : Error< "%select{|member}0 using declaration %1 instantiates to an empty pack">; // C++ Explicit Instantiation def err_explicit_instantiation_duplicate : Error< "duplicate explicit instantiation of %0">; def ext_explicit_instantiation_duplicate : ExtWarn< "duplicate explicit instantiation of %0 ignored as a Microsoft extension">, InGroup; def note_previous_explicit_instantiation : Note< "previous explicit instantiation is here">; def warn_explicit_instantiation_after_specialization : Warning< "explicit instantiation of %0 that occurs after an explicit " "specialization has no effect">, InGroup>; def note_previous_template_specialization : Note< "previous template specialization is here">; def err_explicit_instantiation_nontemplate_type : Error< "explicit instantiation of non-templated type %0">; def note_nontemplate_decl_here : Note< "non-templated declaration is here">; def err_explicit_instantiation_in_class : Error< "explicit instantiation of %0 in class scope">; def err_explicit_instantiation_out_of_scope : Error< "explicit instantiation of %0 not in a namespace enclosing %1">; def err_explicit_instantiation_must_be_global : Error< "explicit instantiation of %0 must occur at global scope">; def warn_explicit_instantiation_out_of_scope_0x : Warning< "explicit instantiation of %0 not in a namespace enclosing %1">, InGroup, DefaultIgnore; def warn_explicit_instantiation_must_be_global_0x : Warning< "explicit instantiation of %0 must occur at global scope">, InGroup, DefaultIgnore; def err_explicit_instantiation_requires_name : Error< "explicit instantiation declaration requires a name">; def err_explicit_instantiation_of_typedef : Error< "explicit instantiation of typedef %0">; def err_explicit_instantiation_storage_class : Error< "explicit instantiation cannot have a storage class">; def err_explicit_instantiation_internal_linkage : Error< "explicit instantiation declaration of %0 with internal linkage">; def err_explicit_instantiation_not_known : Error< "explicit instantiation of %0 does not refer to a function template, " "variable template, member function, member class, or static data member">; def note_explicit_instantiation_here : Note< "explicit instantiation refers here">; def err_explicit_instantiation_data_member_not_instantiated : Error< "explicit instantiation refers to static data member %q0 that is not an " "instantiation">; def err_explicit_instantiation_member_function_not_instantiated : Error< "explicit instantiation refers to member function %q0 that is not an " "instantiation">; def err_explicit_instantiation_ambiguous : Error< "partial ordering for explicit instantiation of %0 is ambiguous">; def note_explicit_instantiation_candidate : Note< "explicit instantiation candidate function %q0 template here %1">; def err_explicit_instantiation_inline : Error< "explicit instantiation cannot be 'inline'">; def warn_explicit_instantiation_inline_0x : Warning< "explicit instantiation cannot be 'inline'">, InGroup, DefaultIgnore; def err_explicit_instantiation_constexpr : Error< "explicit instantiation cannot be 'constexpr'">; def ext_explicit_instantiation_without_qualified_id : Extension< "qualifier in explicit instantiation of %q0 requires a template-id " "(a typedef is not permitted)">; def err_explicit_instantiation_without_template_id : Error< "explicit instantiation of %q0 must specify a template argument list">; def err_explicit_instantiation_unqualified_wrong_namespace : Error< "explicit instantiation of %q0 must occur in namespace %1">; def warn_explicit_instantiation_unqualified_wrong_namespace_0x : Warning< "explicit instantiation of %q0 must occur in namespace %1">, InGroup, DefaultIgnore; def err_explicit_instantiation_undefined_member : Error< "explicit instantiation of undefined %select{member class|member function|" "static data member}0 %1 of class template %2">; def err_explicit_instantiation_undefined_func_template : Error< "explicit instantiation of undefined function template %0">; def err_explicit_instantiation_undefined_var_template : Error< "explicit instantiation of undefined variable template %q0">; def err_explicit_instantiation_declaration_after_definition : Error< "explicit instantiation declaration (with 'extern') follows explicit " "instantiation definition (without 'extern')">; def note_explicit_instantiation_definition_here : Note< "explicit instantiation definition is here">; def err_invalid_var_template_spec_type : Error<"type %2 " "of %select{explicit instantiation|explicit specialization|" "partial specialization|redeclaration}0 of %1 does not match" " expected type %3">; def err_mismatched_exception_spec_explicit_instantiation : Error< "exception specification in explicit instantiation does not match " "instantiated one">; def ext_mismatched_exception_spec_explicit_instantiation : ExtWarn< err_mismatched_exception_spec_explicit_instantiation.Text>, InGroup; def err_explicit_instantiation_dependent : Error< "explicit instantiation has dependent template arguments">; // C++ typename-specifiers def err_typename_nested_not_found : Error<"no type named %0 in %1">; def err_typename_nested_not_found_enable_if : Error< "no type named 'type' in %0; 'enable_if' cannot be used to disable " "this declaration">; def err_typename_nested_not_found_requirement : Error< "failed requirement '%0'; 'enable_if' cannot be used to disable this " "declaration">; def err_typename_nested_not_type : Error< "typename specifier refers to non-type member %0 in %1">; def err_typename_not_type : Error< "typename specifier refers to non-type %0">; def note_typename_member_refers_here : Note< "referenced member %0 is declared here">; def note_typename_refers_here : Note< "referenced %0 is declared here">; def err_typename_missing : Error< "missing 'typename' prior to dependent type name '%0%1'">; def err_typename_missing_template : Error< "missing 'typename' prior to dependent type template name '%0%1'">; def ext_typename_missing : ExtWarn< "missing 'typename' prior to dependent type name '%0%1'">, InGroup>; def ext_typename_outside_of_template : ExtWarn< "'typename' occurs outside of a template">, InGroup; def warn_cxx98_compat_typename_outside_of_template : Warning< "use of 'typename' outside of a template is incompatible with C++98">, InGroup, DefaultIgnore; def err_typename_refers_to_using_value_decl : Error< "typename specifier refers to a dependent using declaration for a value " "%0 in %1">; def note_using_value_decl_missing_typename : Note< "add 'typename' to treat this using declaration as a type">; def err_template_kw_refers_to_non_template : Error< "%0%select{| following the 'template' keyword}1 " "does not refer to a template">; def note_template_kw_refers_to_non_template : Note< "declared as a non-template here">; def err_template_kw_refers_to_dependent_non_template : Error< "%0%select{| following the 'template' keyword}1 " "cannot refer to a dependent template">; def err_template_kw_refers_to_class_template : Error< "'%0%1' instantiated to a class template, not a function template">; def note_referenced_class_template : Note< "class template declared here">; def err_template_kw_missing : Error< "missing 'template' keyword prior to dependent template name '%0%1'">; def ext_template_outside_of_template : ExtWarn< "'template' keyword outside of a template">, InGroup; def warn_cxx98_compat_template_outside_of_template : Warning< "use of 'template' keyword outside of a template is incompatible with C++98">, InGroup, DefaultIgnore; def err_non_type_template_in_nested_name_specifier : Error< "qualified name refers into a specialization of %select{function|variable}0 " "template %1">; def err_template_id_not_a_type : Error< "template name refers to non-type template %0">; def note_template_declared_here : Note< "%select{function template|class template|variable template" "|type alias template|template template parameter}0 " "%1 declared here">; def err_template_expansion_into_fixed_list : Error< "pack expansion used as argument for non-pack parameter of %select{alias " "template|concept}0">; def note_parameter_type : Note< "parameter of type %0 is declared here">; // C++11 Variadic Templates def err_template_param_pack_default_arg : Error< "template parameter pack cannot have a default argument">; def err_template_param_pack_must_be_last_template_parameter : Error< "template parameter pack must be the last template parameter">; def err_template_parameter_pack_non_pack : Error< "%select{template type|non-type template|template template}0 parameter" "%select{| pack}1 conflicts with previous %select{template type|" "non-type template|template template}0 parameter%select{ pack|}1">; def note_template_parameter_pack_non_pack : Note< "%select{template type|non-type template|template template}0 parameter" "%select{| pack}1 does not match %select{template type|non-type template" "|template template}0 parameter%select{ pack|}1 in template argument">; def note_template_parameter_pack_here : Note< "previous %select{template type|non-type template|template template}0 " "parameter%select{| pack}1 declared here">; def err_unexpanded_parameter_pack : Error< "%select{expression|base type|declaration type|data member type|bit-field " "size|static assertion|fixed underlying type|enumerator value|" "using declaration|friend declaration|qualifier|initializer|default argument|" "non-type template parameter type|exception type|partial specialization|" "__if_exists name|__if_not_exists name|lambda|block|type constraint|" "requirement|requires clause}0 " "contains%plural{0: an|:}1 unexpanded parameter pack" "%plural{0:|1: %2|2:s %2 and %3|:s %2, %3, ...}1">; def err_pack_expansion_without_parameter_packs : Error< "pack expansion does not contain any unexpanded parameter packs">; def err_pack_expansion_length_conflict : Error< "pack expansion contains parameter packs %0 and %1 that have different " "lengths (%2 vs. %3)">; def err_pack_expansion_length_conflict_multilevel : Error< "pack expansion contains parameter pack %0 that has a different " "length (%1 vs. %2) from outer parameter packs">; def err_pack_expansion_length_conflict_partial : Error< "pack expansion contains parameter pack %0 that has a different " "length (at least %1 vs. %2) from outer parameter packs">; def err_pack_expansion_member_init : Error< "pack expansion for initialization of member %0">; def err_function_parameter_pack_without_parameter_packs : Error< "type %0 of function parameter pack does not contain any unexpanded " "parameter packs">; def err_ellipsis_in_declarator_not_parameter : Error< "only function and template parameters can be parameter packs">; def err_sizeof_pack_no_pack_name : Error< "%0 does not refer to the name of a parameter pack">; def err_fold_expression_packs_both_sides : Error< "binary fold expression has unexpanded parameter packs in both operands">; def err_fold_expression_empty : Error< "unary fold expression has empty expansion for operator '%0' " "with no fallback value">; def err_fold_expression_bad_operand : Error< "expression not permitted as operand of fold expression">; def err_fold_expression_limit_exceeded: Error< "instantiating fold expression with %0 arguments exceeded expression nesting " "limit of %1">, DefaultFatal, NoSFINAE; def err_unexpected_typedef : Error< "unexpected type name %0: expected expression">; def err_unexpected_namespace : Error< "unexpected namespace name %0: expected expression">; def err_undeclared_var_use : Error<"use of undeclared identifier %0">; def ext_undeclared_unqual_id_with_dependent_base : ExtWarn< "use of undeclared identifier %0; " "unqualified lookup into dependent bases of class template %1 is a Microsoft extension">, InGroup; def err_found_in_dependent_base : Error< "explicit qualification required to use member %0 from dependent base class">; def ext_found_in_dependent_base : ExtWarn<"use of member %0 " "found via unqualified lookup into dependent bases of class templates is a " "Microsoft extension">, InGroup; def err_found_later_in_class : Error<"member %0 used before its declaration">; def ext_found_later_in_class : ExtWarn< "use of member %0 before its declaration is a Microsoft extension">, InGroup; def note_dependent_member_use : Note< "must qualify identifier to find this declaration in dependent base class">; def err_not_found_by_two_phase_lookup : Error<"call to function %0 that is neither " "visible in the template definition nor found by argument-dependent lookup">; def note_not_found_by_two_phase_lookup : Note<"%0 should be declared prior to the " "call site%select{| or in %2| or in an associated namespace of one of its arguments}1">; def err_undeclared_use : Error<"use of undeclared %0">; def warn_deprecated : Warning<"%0 is deprecated">, InGroup; def note_from_diagnose_if : Note<"from 'diagnose_if' attribute on %0:">; def warn_property_method_deprecated : Warning<"property access is using %0 method which is deprecated">, InGroup; def warn_deprecated_message : Warning<"%0 is deprecated: %1">, InGroup; def warn_deprecated_anonymous_namespace : Warning< "'deprecated' attribute on anonymous namespace ignored">, InGroup; def warn_deprecated_fwdclass_message : Warning< "%0 may be deprecated because the receiver type is unknown">, InGroup; def warn_deprecated_def : Warning< "implementing deprecated %select{method|class|category}0">, InGroup, DefaultIgnore; def warn_unavailable_def : Warning< "implementing unavailable method">, InGroup, DefaultIgnore; def err_unavailable : Error<"%0 is unavailable">; def err_property_method_unavailable : Error<"property access is using %0 method which is unavailable">; def err_unavailable_message : Error<"%0 is unavailable: %1">; def warn_unavailable_fwdclass_message : Warning< "%0 may be unavailable because the receiver type is unknown">, InGroup; def note_availability_specified_here : Note< "%0 has been explicitly marked " "%select{unavailable|deleted|deprecated}1 here">; def note_partial_availability_specified_here : Note< "%0 has been marked as being introduced in %1 %2 here, " "but the deployment target is %1 %3">; def note_implicitly_deleted : Note< "explicitly defaulted function was implicitly deleted here">; def warn_not_enough_argument : Warning< "not enough variable arguments in %0 declaration to fit a sentinel">, InGroup; def warn_missing_sentinel : Warning < "missing sentinel in %select{function call|method dispatch|block call}0">, InGroup; def note_sentinel_here : Note< "%select{function|method|block}0 has been explicitly marked sentinel here">; def warn_missing_prototype : Warning< "no previous prototype for function %0">, InGroup>, DefaultIgnore; def note_declaration_not_a_prototype : Note< "this declaration is not a prototype; add %select{'void'|parameter declarations}0 " "to make it %select{a prototype for a zero-parameter function|one}0">; def warn_strict_prototypes : Warning< "this %select{function declaration is not|block declaration is not|" "old-style function definition is not preceded by}0 a prototype">, InGroup>, DefaultIgnore; def warn_missing_variable_declarations : Warning< "no previous extern declaration for non-static variable %0">, InGroup>, DefaultIgnore; def note_static_for_internal_linkage : Note< "declare 'static' if the %select{variable|function}0 is not intended to be " "used outside of this translation unit">; def err_static_data_member_reinitialization : Error<"static data member %0 already has an initializer">; def err_redefinition : Error<"redefinition of %0">; def err_alias_after_tentative : Error<"alias definition of %0 after tentative definition">; def err_alias_is_definition : Error<"definition %0 cannot also be an %select{alias|ifunc}1">; def err_definition_of_implicitly_declared_member : Error< "definition of implicitly declared %select{default constructor|copy " "constructor|move constructor|copy assignment operator|move assignment " "operator|destructor|function}1">; def err_definition_of_explicitly_defaulted_member : Error< "definition of explicitly defaulted %select{default constructor|copy " "constructor|move constructor|copy assignment operator|move assignment " "operator|destructor|function}0">; def err_redefinition_extern_inline : Error< "redefinition of a 'extern inline' function %0 is not supported in " "%select{C99 mode|C++}1">; def warn_attr_abi_tag_namespace : Warning< "'abi_tag' attribute on %select{non-inline|anonymous}0 namespace ignored">, InGroup; def err_abi_tag_on_redeclaration : Error< "cannot add 'abi_tag' attribute in a redeclaration">; def err_new_abi_tag_on_redeclaration : Error< "'abi_tag' %0 missing in original declaration">; def note_use_ifdef_guards : Note< "unguarded header; consider using #ifdef guards or #pragma once">; def note_deleted_dtor_no_operator_delete : Note< "virtual destructor requires an unambiguous, accessible 'operator delete'">; def note_deleted_special_member_class_subobject : Note< "%select{default constructor of|copy constructor of|move constructor of|" "copy assignment operator of|move assignment operator of|destructor of|" "constructor inherited by}0 " "%1 is implicitly deleted because " "%select{base class %3|%select{||||variant }4field %3}2 " "%select{has " "%select{no|a deleted|multiple|an inaccessible|a non-trivial}4 " "%select{%select{default constructor|copy constructor|move constructor|copy " "assignment operator|move assignment operator|destructor|" "%select{default|corresponding|default|default|default}4 constructor}0|" "destructor}5" "%select{||s||}4" "|is an ObjC pointer}6">; def note_deleted_default_ctor_uninit_field : Note< "%select{default constructor of|constructor inherited by}0 " "%1 is implicitly deleted because field %2 of " "%select{reference|const-qualified}4 type %3 would not be initialized">; def note_deleted_default_ctor_all_const : Note< "%select{default constructor of|constructor inherited by}0 " "%1 is implicitly deleted because all " "%select{data members|data members of an anonymous union member}2" " are const-qualified">; def note_deleted_copy_ctor_rvalue_reference : Note< "copy constructor of %0 is implicitly deleted because field %1 is of " "rvalue reference type %2">; def note_deleted_copy_user_declared_move : Note< "copy %select{constructor|assignment operator}0 is implicitly deleted because" " %1 has a user-declared move %select{constructor|assignment operator}2">; def note_deleted_assign_field : Note< "%select{copy|move}0 assignment operator of %1 is implicitly deleted " "because field %2 is of %select{reference|const-qualified}4 type %3">; // These should be errors. def warn_undefined_internal : Warning< "%select{function|variable}0 %q1 has internal linkage but is not defined">, InGroup>; def err_undefined_internal_type : Error< "%select{function|variable}0 %q1 is used but not defined in this " "translation unit, and cannot be defined in any other translation unit " "because its type does not have linkage">; def ext_undefined_internal_type : Extension< "ISO C++ requires a definition in this translation unit for " "%select{function|variable}0 %q1 because its type does not have linkage">, InGroup>; def warn_undefined_inline : Warning<"inline function %q0 is not defined">, InGroup>; def err_undefined_inline_var : Error<"inline variable %q0 is not defined">; def note_used_here : Note<"used here">; def err_internal_linkage_redeclaration : Error< "'internal_linkage' attribute does not appear on the first declaration of %0">; def warn_internal_linkage_local_storage : Warning< "'internal_linkage' attribute on a non-static local variable is ignored">, InGroup; def ext_internal_in_extern_inline : ExtWarn< "static %select{function|variable}0 %1 is used in an inline function with " "external linkage">, InGroup; def ext_internal_in_extern_inline_quiet : Extension< "static %select{function|variable}0 %1 is used in an inline function with " "external linkage">, InGroup; def warn_static_local_in_extern_inline : Warning< "non-constant static local variable in inline function may be different " "in different files">, InGroup; def note_convert_inline_to_static : Note< "use 'static' to give inline function %0 internal linkage">; def ext_redefinition_of_typedef : ExtWarn< "redefinition of typedef %0 is a C11 feature">, InGroup >; def err_redefinition_variably_modified_typedef : Error< "redefinition of %select{typedef|type alias}0 for variably-modified type %1">; def err_inline_decl_follows_def : Error< "inline declaration of %0 follows non-inline definition">; def err_inline_declaration_block_scope : Error< "inline declaration of %0 not allowed in block scope">; def err_static_non_static : Error< "static declaration of %0 follows non-static declaration">; def err_different_language_linkage : Error< "declaration of %0 has a different language linkage">; def ext_retained_language_linkage : Extension< "friend function %0 retaining previous language linkage is an extension">, InGroup>; def err_extern_c_global_conflict : Error< "declaration of %1 %select{with C language linkage|in global scope}0 " "conflicts with declaration %select{in global scope|with C language linkage}0">; def note_extern_c_global_conflict : Note< "declared %select{in global scope|with C language linkage}0 here">; def note_extern_c_begins_here : Note< "extern \"C\" language linkage specification begins here">; def warn_weak_import : Warning < "an already-declared variable is made a weak_import declaration %0">; def ext_static_non_static : Extension< "redeclaring non-static %0 as static is a Microsoft extension">, InGroup; def err_non_static_static : Error< "non-static declaration of %0 follows static declaration">; def err_extern_non_extern : Error< "extern declaration of %0 follows non-extern declaration">; def err_non_extern_extern : Error< "non-extern declaration of %0 follows extern declaration">; def err_non_thread_thread : Error< "non-thread-local declaration of %0 follows thread-local declaration">; def err_thread_non_thread : Error< "thread-local declaration of %0 follows non-thread-local declaration">; def err_thread_thread_different_kind : Error< "thread-local declaration of %0 with %select{static|dynamic}1 initialization " "follows declaration with %select{dynamic|static}1 initialization">; def err_mismatched_owning_module : Error< "declaration of %0 in %select{the global module|module %2}1 follows " "declaration in %select{the global module|module %4}3">; def err_redefinition_different_type : Error< "redefinition of %0 with a different type%diff{: $ vs $|}1,2">; def err_redefinition_different_kind : Error< "redefinition of %0 as different kind of symbol">; def err_redefinition_different_namespace_alias : Error< "redefinition of %0 as an alias for a different namespace">; def note_previous_namespace_alias : Note< "previously defined as an alias for %0">; def warn_forward_class_redefinition : Warning< "redefinition of forward class %0 of a typedef name of an object type is ignored">, InGroup>; def err_redefinition_different_typedef : Error< "%select{typedef|type alias|type alias template}0 " "redefinition with different types%diff{ ($ vs $)|}1,2">; def err_tag_reference_non_tag : Error< "%select{non-struct type|non-class type|non-union type|non-enum " "type|typedef|type alias|template|type alias template|template " "template argument}1 %0 cannot be referenced with a " "%select{struct|interface|union|class|enum}2 specifier">; def err_tag_reference_conflict : Error< "implicit declaration introduced by elaborated type conflicts with a " "%select{non-struct type|non-class type|non-union type|non-enum " "type|typedef|type alias|template|type alias template|template " "template argument}0 of the same name">; def err_dependent_tag_decl : Error< "%select{declaration|definition}0 of " "%select{struct|interface|union|class|enum}1 in a dependent scope">; def err_tag_definition_of_typedef : Error< "definition of type %0 conflicts with %select{typedef|type alias}1 of the same name">; def err_conflicting_types : Error<"conflicting types for %0">; def err_different_pass_object_size_params : Error< "conflicting pass_object_size attributes on parameters">; def err_late_asm_label_name : Error< "cannot apply asm label to %select{variable|function}0 after its first use">; def err_different_asm_label : Error<"conflicting asm label">; def err_nested_redefinition : Error<"nested redefinition of %0">; def err_use_with_wrong_tag : Error< "use of %0 with tag type that does not match previous declaration">; def warn_struct_class_tag_mismatch : Warning< "%select{struct|interface|class}0%select{| template}1 %2 was previously " "declared as a %select{struct|interface|class}3%select{| template}1; " "this is valid, but may result in linker errors under the Microsoft C++ ABI">, InGroup, DefaultIgnore; def warn_struct_class_previous_tag_mismatch : Warning< "%2 defined as %select{a struct|an interface|a class}0%select{| template}1 " "here but previously declared as " "%select{a struct|an interface|a class}3%select{| template}1; " "this is valid, but may result in linker errors under the Microsoft C++ ABI">, InGroup, DefaultIgnore; def note_struct_class_suggestion : Note< "did you mean %select{struct|interface|class}0 here?">; def ext_forward_ref_enum : Extension< "ISO C forbids forward references to 'enum' types">; def err_forward_ref_enum : Error< "ISO C++ forbids forward references to 'enum' types">; def ext_ms_forward_ref_enum : ExtWarn< "forward references to 'enum' types are a Microsoft extension">, InGroup; def ext_forward_ref_enum_def : Extension< "redeclaration of already-defined enum %0 is a GNU extension">, InGroup; def err_redefinition_of_enumerator : Error<"redefinition of enumerator %0">; def err_duplicate_member : Error<"duplicate member %0">; def err_misplaced_ivar : Error< "instance variables may not be placed in %select{categories|class extension}0">; def warn_ivars_in_interface : Warning< "declaration of instance variables in the interface is deprecated">, InGroup>, DefaultIgnore; def ext_enum_value_not_int : Extension< "ISO C restricts enumerator values to range of 'int' (%0 is too " "%select{small|large}1)">; def ext_enum_too_large : ExtWarn< "enumeration values exceed range of largest integer">, InGroup; def ext_enumerator_increment_too_large : ExtWarn< "incremented enumerator value %0 is not representable in the " "largest integer type">, InGroup; def warn_flag_enum_constant_out_of_range : Warning< "enumeration value %0 is out of range of flags in enumeration type %1">, InGroup; def err_vm_decl_in_file_scope : Error< "variably modified type declaration not allowed at file scope">; def err_vm_decl_has_extern_linkage : Error< "variably modified type declaration cannot have 'extern' linkage">; def err_typecheck_field_variable_size : Error< "fields must have a constant size: 'variable length array in structure' " "extension will never be supported">; def err_vm_func_decl : Error< "function declaration cannot have variably modified type">; def err_array_too_large : Error< "array is too large (%0 elements)">; def err_typecheck_negative_array_size : Error<"array size is negative">; def warn_typecheck_function_qualifiers_ignored : Warning< "'%0' qualifier on function type %1 has no effect">, InGroup; def warn_typecheck_function_qualifiers_unspecified : Warning< "'%0' qualifier on function type %1 has unspecified behavior">; def warn_typecheck_reference_qualifiers : Warning< "'%0' qualifier on reference type %1 has no effect">, InGroup; def err_typecheck_invalid_restrict_not_pointer : Error< "restrict requires a pointer or reference (%0 is invalid)">; def err_typecheck_invalid_restrict_not_pointer_noarg : Error< "restrict requires a pointer or reference">; def err_typecheck_invalid_restrict_invalid_pointee : Error< "pointer to function type %0 may not be 'restrict' qualified">; def ext_typecheck_zero_array_size : Extension< "zero size arrays are an extension">, InGroup; def err_typecheck_zero_array_size : Error< "zero-length arrays are not permitted in C++">; def err_array_size_non_int : Error<"size of array has non-integer type %0">; def err_init_element_not_constant : Error< "initializer element is not a compile-time constant">; def ext_aggregate_init_not_constant : Extension< "initializer for aggregate is not a compile-time constant">, InGroup; def err_local_cant_init : Error< "'__local' variable cannot have an initializer">; def err_loader_uninitialized_cant_init : Error<"variable with 'loader_uninitialized' attribute cannot have an " "initializer">; def err_loader_uninitialized_trivial_ctor : Error<"variable with 'loader_uninitialized' attribute must have a " "trivial default constructor">; def err_loader_uninitialized_redeclaration : Error<"redeclaration cannot add 'loader_uninitialized' attribute">; def err_loader_uninitialized_extern_decl : Error<"variable %0 cannot be declared both 'extern' and with the " "'loader_uninitialized' attribute">; def err_block_extern_cant_init : Error< "'extern' variable cannot have an initializer">; def warn_extern_init : Warning<"'extern' variable has an initializer">, InGroup>; def err_variable_object_no_init : Error< "variable-sized object may not be initialized">; def err_excess_initializers : Error< "excess elements in %select{array|vector|scalar|union|struct}0 initializer">; def ext_excess_initializers : ExtWarn< "excess elements in %select{array|vector|scalar|union|struct}0 initializer">, InGroup; def err_excess_initializers_for_sizeless_type : Error< "excess elements in initializer for indivisible sizeless type %0">; def ext_excess_initializers_for_sizeless_type : ExtWarn< "excess elements in initializer for indivisible sizeless type %0">, InGroup; def err_excess_initializers_in_char_array_initializer : Error< "excess elements in char array initializer">; def ext_excess_initializers_in_char_array_initializer : ExtWarn< "excess elements in char array initializer">, InGroup; def err_initializer_string_for_char_array_too_long : Error< "initializer-string for char array is too long">; def ext_initializer_string_for_char_array_too_long : ExtWarn< "initializer-string for char array is too long">, InGroup; def warn_missing_field_initializers : Warning< "missing field %0 initializer">, InGroup, DefaultIgnore; def warn_braces_around_init : Warning< "braces around %select{scalar |}0initializer">, InGroup>; def ext_many_braces_around_init : ExtWarn< "too many braces around %select{scalar |}0initializer">, InGroup>, SFINAEFailure; def ext_complex_component_init : Extension< "complex initialization specifying real and imaginary components " "is an extension">, InGroup>; def err_empty_scalar_initializer : Error<"scalar initializer cannot be empty">; def err_empty_sizeless_initializer : Error< "initializer for sizeless type %0 cannot be empty">; def warn_cxx98_compat_empty_scalar_initializer : Warning< "scalar initialized from empty initializer list is incompatible with C++98">, InGroup, DefaultIgnore; def warn_cxx98_compat_empty_sizeless_initializer : Warning< "initializing %0 from an empty initializer list is incompatible with C++98">, InGroup, DefaultIgnore; def warn_cxx98_compat_reference_list_init : Warning< "reference initialized from initializer list is incompatible with C++98">, InGroup, DefaultIgnore; def warn_cxx98_compat_initializer_list_init : Warning< "initialization of initializer_list object is incompatible with C++98">, InGroup, DefaultIgnore; def warn_cxx98_compat_ctor_list_init : Warning< "constructor call from initializer list is incompatible with C++98">, InGroup, DefaultIgnore; def err_illegal_initializer : Error< "illegal initializer (only variables can be initialized)">; def err_illegal_initializer_type : Error<"illegal initializer type %0">; def ext_init_list_type_narrowing : ExtWarn< "type %0 cannot be narrowed to %1 in initializer list">, InGroup, DefaultError, SFINAEFailure; def ext_init_list_variable_narrowing : ExtWarn< "non-constant-expression cannot be narrowed from type %0 to %1 in " "initializer list">, InGroup, DefaultError, SFINAEFailure; def ext_init_list_constant_narrowing : ExtWarn< "constant expression evaluates to %0 which cannot be narrowed to type %1">, InGroup, DefaultError, SFINAEFailure; def warn_init_list_type_narrowing : Warning< "type %0 cannot be narrowed to %1 in initializer list in C++11">, InGroup, DefaultIgnore; def warn_init_list_variable_narrowing : Warning< "non-constant-expression cannot be narrowed from type %0 to %1 in " "initializer list in C++11">, InGroup, DefaultIgnore; def warn_init_list_constant_narrowing : Warning< "constant expression evaluates to %0 which cannot be narrowed to type %1 in " "C++11">, InGroup, DefaultIgnore; def note_init_list_narrowing_silence : Note< "insert an explicit cast to silence this issue">; def err_init_objc_class : Error< "cannot initialize Objective-C class type %0">; def err_implicit_empty_initializer : Error< "initializer for aggregate with no elements requires explicit braces">; def err_bitfield_has_negative_width : Error< "bit-field %0 has negative width (%1)">; def err_anon_bitfield_has_negative_width : Error< "anonymous bit-field has negative width (%0)">; def err_bitfield_has_zero_width : Error<"named bit-field %0 has zero width">; def err_bitfield_width_exceeds_type_width : Error< "width of bit-field %0 (%1 bits) exceeds %select{width|size}2 " "of its type (%3 bit%s3)">; def err_anon_bitfield_width_exceeds_type_width : Error< "width of anonymous bit-field (%0 bits) exceeds %select{width|size}1 " "of its type (%2 bit%s2)">; def err_incorrect_number_of_vector_initializers : Error< "number of elements must be either one or match the size of the vector">; // Used by C++ which allows bit-fields that are wider than the type. def warn_bitfield_width_exceeds_type_width: Warning< "width of bit-field %0 (%1 bits) exceeds the width of its type; value will " "be truncated to %2 bit%s2">, InGroup; def err_bitfield_too_wide : Error< "%select{bit-field %1|anonymous bit-field}0 is too wide (%2 bits)">; def warn_bitfield_too_small_for_enum : Warning< "bit-field %0 is not wide enough to store all enumerators of %1">, InGroup, DefaultIgnore; def note_widen_bitfield : Note< "widen this field to %0 bits to store all values of %1">; def warn_unsigned_bitfield_assigned_signed_enum : Warning< "assigning value of signed enum type %1 to unsigned bit-field %0; " "negative enumerators of enum %1 will be converted to positive values">, InGroup, DefaultIgnore; def warn_signed_bitfield_enum_conversion : Warning< "signed bit-field %0 needs an extra bit to represent the largest positive " "enumerators of %1">, InGroup, DefaultIgnore; def note_change_bitfield_sign : Note< "consider making the bitfield type %select{unsigned|signed}0">; def warn_missing_braces : Warning< "suggest braces around initialization of subobject">, InGroup, DefaultIgnore; def err_redefinition_of_label : Error<"redefinition of label %0">; def err_undeclared_label_use : Error<"use of undeclared label %0">; def err_goto_ms_asm_label : Error< "cannot jump from this goto statement to label %0 inside an inline assembly block">; def note_goto_ms_asm_label : Note< "inline assembly label %0 declared here">; def warn_unused_label : Warning<"unused label %0">, InGroup, DefaultIgnore; def err_goto_into_protected_scope : Error< "cannot jump from this goto statement to its label">; def ext_goto_into_protected_scope : ExtWarn< "jump from this goto statement to its label is a Microsoft extension">, InGroup; def warn_cxx98_compat_goto_into_protected_scope : Warning< "jump from this goto statement to its label is incompatible with C++98">, InGroup, DefaultIgnore; def err_switch_into_protected_scope : Error< "cannot jump from switch statement to this case label">; def warn_cxx98_compat_switch_into_protected_scope : Warning< "jump from switch statement to this case label is incompatible with C++98">, InGroup, DefaultIgnore; def err_indirect_goto_without_addrlabel : Error< "indirect goto in function with no address-of-label expressions">; def err_indirect_goto_in_protected_scope : Error< "cannot jump from this %select{indirect|asm}0 goto statement to one of its possible targets">; def warn_cxx98_compat_indirect_goto_in_protected_scope : Warning< "jump from this %select{indirect|asm}0 goto statement to one of its possible targets " "is incompatible with C++98">, InGroup, DefaultIgnore; def note_indirect_goto_target : Note< "possible target of %select{indirect|asm}0 goto statement">; def note_protected_by_variable_init : Note< "jump bypasses variable initialization">; def note_protected_by_variable_nontriv_destructor : Note< "jump bypasses variable with a non-trivial destructor">; def note_protected_by_variable_non_pod : Note< "jump bypasses initialization of non-POD variable">; def note_protected_by_cleanup : Note< "jump bypasses initialization of variable with __attribute__((cleanup))">; def note_protected_by_vla_typedef : Note< "jump bypasses initialization of VLA typedef">; def note_protected_by_vla_type_alias : Note< "jump bypasses initialization of VLA type alias">; def note_protected_by_constexpr_if : Note< "jump enters controlled statement of constexpr if">; def note_protected_by_if_available : Note< "jump enters controlled statement of if available">; def note_protected_by_vla : Note< "jump bypasses initialization of variable length array">; def note_protected_by_objc_fast_enumeration : Note< "jump enters Objective-C fast enumeration loop">; def note_protected_by_objc_try : Note< "jump bypasses initialization of @try block">; def note_protected_by_objc_catch : Note< "jump bypasses initialization of @catch block">; def note_protected_by_objc_finally : Note< "jump bypasses initialization of @finally block">; def note_protected_by_objc_synchronized : Note< "jump bypasses initialization of @synchronized block">; def note_protected_by_objc_autoreleasepool : Note< "jump bypasses auto release push of @autoreleasepool block">; def note_protected_by_cxx_try : Note< "jump bypasses initialization of try block">; def note_protected_by_cxx_catch : Note< "jump bypasses initialization of catch block">; def note_protected_by_seh_try : Note< "jump bypasses initialization of __try block">; def note_protected_by_seh_except : Note< "jump bypasses initialization of __except block">; def note_protected_by_seh_finally : Note< "jump bypasses initialization of __finally block">; def note_protected_by___block : Note< "jump bypasses setup of __block variable">; def note_protected_by_objc_strong_init : Note< "jump bypasses initialization of __strong variable">; def note_protected_by_objc_weak_init : Note< "jump bypasses initialization of __weak variable">; def note_protected_by_non_trivial_c_struct_init : Note< "jump bypasses initialization of variable of non-trivial C struct type">; def note_enters_block_captures_cxx_obj : Note< "jump enters lifetime of block which captures a destructible C++ object">; def note_enters_block_captures_strong : Note< "jump enters lifetime of block which strongly captures a variable">; def note_enters_block_captures_weak : Note< "jump enters lifetime of block which weakly captures a variable">; def note_enters_block_captures_non_trivial_c_struct : Note< "jump enters lifetime of block which captures a C struct that is non-trivial " "to destroy">; def note_enters_compound_literal_scope : Note< "jump enters lifetime of a compound literal that is non-trivial to destruct">; def note_exits_cleanup : Note< "jump exits scope of variable with __attribute__((cleanup))">; def note_exits_dtor : Note< "jump exits scope of variable with non-trivial destructor">; def note_exits_temporary_dtor : Note< "jump exits scope of lifetime-extended temporary with non-trivial " "destructor">; def note_exits___block : Note< "jump exits scope of __block variable">; def note_exits_objc_try : Note< "jump exits @try block">; def note_exits_objc_catch : Note< "jump exits @catch block">; def note_exits_objc_finally : Note< "jump exits @finally block">; def note_exits_objc_synchronized : Note< "jump exits @synchronized block">; def note_exits_cxx_try : Note< "jump exits try block">; def note_exits_cxx_catch : Note< "jump exits catch block">; def note_exits_seh_try : Note< "jump exits __try block">; def note_exits_seh_except : Note< "jump exits __except block">; def note_exits_seh_finally : Note< "jump exits __finally block">; def note_exits_objc_autoreleasepool : Note< "jump exits autoreleasepool block">; def note_exits_objc_strong : Note< "jump exits scope of __strong variable">; def note_exits_objc_weak : Note< "jump exits scope of __weak variable">; def note_exits_block_captures_cxx_obj : Note< "jump exits lifetime of block which captures a destructible C++ object">; def note_exits_block_captures_strong : Note< "jump exits lifetime of block which strongly captures a variable">; def note_exits_block_captures_weak : Note< "jump exits lifetime of block which weakly captures a variable">; def note_exits_block_captures_non_trivial_c_struct : Note< "jump exits lifetime of block which captures a C struct that is non-trivial " "to destroy">; def note_exits_compound_literal_scope : Note< "jump exits lifetime of a compound literal that is non-trivial to destruct">; def err_func_returning_qualified_void : ExtWarn< "function cannot return qualified void type %0">, InGroup>; def err_func_returning_array_function : Error< "function cannot return %select{array|function}0 type %1">; def err_field_declared_as_function : Error<"field %0 declared as a function">; def err_field_incomplete_or_sizeless : Error< "field has %select{incomplete|sizeless}0 type %1">; def ext_variable_sized_type_in_struct : ExtWarn< "field %0 with variable sized type %1 not at the end of a struct or class is" " a GNU extension">, InGroup; def ext_c99_flexible_array_member : Extension< "flexible array members are a C99 feature">, InGroup; def err_flexible_array_virtual_base : Error< "flexible array member %0 not allowed in " "%select{struct|interface|union|class|enum}1 which has a virtual base class">; def err_flexible_array_empty_aggregate : Error< "flexible array member %0 not allowed in otherwise empty " "%select{struct|interface|union|class|enum}1">; def err_flexible_array_has_nontrivial_dtor : Error< "flexible array member %0 of type %1 with non-trivial destruction">; def ext_flexible_array_in_struct : Extension< "%0 may not be nested in a struct due to flexible array member">, InGroup; def ext_flexible_array_in_array : Extension< "%0 may not be used as an array element due to flexible array member">, InGroup; def err_flexible_array_init : Error< "initialization of flexible array member is not allowed">; def ext_flexible_array_empty_aggregate_ms : Extension< "flexible array member %0 in otherwise empty " "%select{struct|interface|union|class|enum}1 is a Microsoft extension">, InGroup; def err_flexible_array_union : Error< "flexible array member %0 in a union is not allowed">; def ext_flexible_array_union_ms : Extension< "flexible array member %0 in a union is a Microsoft extension">, InGroup; def ext_flexible_array_empty_aggregate_gnu : Extension< "flexible array member %0 in otherwise empty " "%select{struct|interface|union|class|enum}1 is a GNU extension">, InGroup; def ext_flexible_array_union_gnu : Extension< "flexible array member %0 in a union is a GNU extension">, InGroup; def err_flexible_array_not_at_end : Error< "flexible array member %0 with type %1 is not at the end of" " %select{struct|interface|union|class|enum}2">; def err_objc_variable_sized_type_not_at_end : Error< "field %0 with variable sized type %1 is not at the end of class">; def note_next_field_declaration : Note< "next field declaration is here">; def note_next_ivar_declaration : Note< "next %select{instance variable declaration|synthesized instance variable}0" " is here">; def err_synthesize_variable_sized_ivar : Error< "synthesized property with variable size type %0" " requires an existing instance variable">; def err_flexible_array_arc_retainable : Error< "ARC forbids flexible array members with retainable object type">; def warn_variable_sized_ivar_visibility : Warning< "field %0 with variable sized type %1 is not visible to subclasses and" " can conflict with their instance variables">, InGroup; def warn_superclass_variable_sized_type_not_at_end : Warning< "field %0 can overwrite instance variable %1 with variable sized type %2" " in superclass %3">, InGroup; let CategoryName = "ARC Semantic Issue" in { // ARC-mode diagnostics. let CategoryName = "ARC Weak References" in { def err_arc_weak_no_runtime : Error< "cannot create __weak reference because the current deployment target " "does not support weak references">; def err_arc_weak_disabled : Error< "cannot create __weak reference in file using manual reference counting">; def err_synthesizing_arc_weak_property_disabled : Error< "cannot synthesize weak property in file using manual reference counting">; def err_synthesizing_arc_weak_property_no_runtime : Error< "cannot synthesize weak property because the current deployment target " "does not support weak references">; def err_arc_unsupported_weak_class : Error< "class is incompatible with __weak references">; def err_arc_weak_unavailable_assign : Error< "assignment of a weak-unavailable object to a __weak object">; def err_arc_weak_unavailable_property : Error< "synthesizing __weak instance variable of type %0, which does not " "support weak references">; def note_implemented_by_class : Note< "when implemented by class %0">; def err_arc_convesion_of_weak_unavailable : Error< "%select{implicit conversion|cast}0 of weak-unavailable object of type %1 to" " a __weak object of type %2">; } // end "ARC Weak References" category let CategoryName = "ARC Restrictions" in { def err_unavailable_in_arc : Error< "%0 is unavailable in ARC">; def note_arc_forbidden_type : Note< "declaration uses type that is ill-formed in ARC">; def note_performs_forbidden_arc_conversion : Note< "inline function performs a conversion which is forbidden in ARC">; def note_arc_init_returns_unrelated : Note< "init method must return a type related to its receiver type">; def note_arc_weak_disabled : Note< "declaration uses __weak, but ARC is disabled">; def note_arc_weak_no_runtime : Note<"declaration uses __weak, which " "the current deployment target does not support">; def note_arc_field_with_ownership : Note< "field has non-trivial ownership qualification">; def err_arc_illegal_explicit_message : Error< "ARC forbids explicit message send of %0">; def err_arc_unused_init_message : Error< "the result of a delegate init call must be immediately returned " "or assigned to 'self'">; def err_arc_mismatched_cast : Error< "%select{implicit conversion|cast}0 of " "%select{%2|a non-Objective-C pointer type %2|a block pointer|" "an Objective-C pointer|an indirect pointer to an Objective-C pointer}1" " to %3 is disallowed with ARC">; def err_arc_nolifetime_behavior : Error< "explicit ownership qualifier on cast result has no effect">; def err_arc_objc_property_default_assign_on_object : Error< "ARC forbids synthesizing a property of an Objective-C object " "with unspecified ownership or storage attribute">; def err_arc_illegal_selector : Error< "ARC forbids use of %0 in a @selector">; def err_arc_illegal_method_def : Error< "ARC forbids %select{implementation|synthesis}0 of %1">; def warn_arc_strong_pointer_objc_pointer : Warning< "method parameter of type %0 with no explicit ownership">, InGroup>, DefaultIgnore; } // end "ARC Restrictions" category def err_arc_lost_method_convention : Error< "method was declared as %select{an 'alloc'|a 'copy'|an 'init'|a 'new'}0 " "method, but its implementation doesn't match because %select{" "its result type is not an object pointer|" "its result type is unrelated to its receiver type}1">; def note_arc_lost_method_convention : Note<"declaration in interface">; def err_arc_gained_method_convention : Error< "method implementation does not match its declaration">; def note_arc_gained_method_convention : Note< "declaration in interface is not in the '%select{alloc|copy|init|new}0' " "family because %select{its result type is not an object pointer|" "its result type is unrelated to its receiver type}1">; def err_typecheck_arc_assign_self : Error< "cannot assign to 'self' outside of a method in the init family">; def err_typecheck_arc_assign_self_class_method : Error< "cannot assign to 'self' in a class method">; def err_typecheck_arr_assign_enumeration : Error< "fast enumeration variables cannot be modified in ARC by default; " "declare the variable __strong to allow this">; def err_typecheck_arc_assign_externally_retained : Error< "variable declared with 'objc_externally_retained' " "cannot be modified in ARC">; def warn_arc_retained_assign : Warning< "assigning retained object to %select{weak|unsafe_unretained}0 " "%select{property|variable}1" "; object will be released after assignment">, InGroup; def warn_arc_retained_property_assign : Warning< "assigning retained object to unsafe property" "; object will be released after assignment">, InGroup; def warn_arc_literal_assign : Warning< "assigning %select{array literal|dictionary literal|numeric literal|boxed expression||block literal}0" " to a weak %select{property|variable}1" "; object will be released after assignment">, InGroup; def err_arc_new_array_without_ownership : Error< "'new' cannot allocate an array of %0 with no explicit ownership">; def err_arc_autoreleasing_var : Error< "%select{__block variables|global variables|fields|instance variables}0 cannot have " "__autoreleasing ownership">; def err_arc_autoreleasing_capture : Error< "cannot capture __autoreleasing variable in a " "%select{block|lambda by copy}0">; def err_arc_thread_ownership : Error< "thread-local variable has non-trivial ownership: type is %0">; def err_arc_indirect_no_ownership : Error< "%select{pointer|reference}1 to non-const type %0 with no explicit ownership">; def err_arc_array_param_no_ownership : Error< "must explicitly describe intended ownership of an object array parameter">; def err_arc_pseudo_dtor_inconstant_quals : Error< "pseudo-destructor destroys object of type %0 with inconsistently-qualified " "type %1">; def err_arc_init_method_unrelated_result_type : Error< "init methods must return a type related to the receiver type">; def err_arc_nonlocal_writeback : Error< "passing address of %select{non-local|non-scalar}0 object to " "__autoreleasing parameter for write-back">; def err_arc_method_not_found : Error< "no known %select{instance|class}1 method for selector %0">; def err_arc_receiver_forward_class : Error< "receiver %0 for class message is a forward declaration">; def err_arc_may_not_respond : Error< "no visible @interface for %0 declares the selector %1">; def err_arc_receiver_forward_instance : Error< "receiver type %0 for instance message is a forward declaration">; def warn_receiver_forward_instance : Warning< "receiver type %0 for instance message is a forward declaration">, InGroup, DefaultIgnore; def err_arc_collection_forward : Error< "collection expression type %0 is a forward declaration">; def err_arc_multiple_method_decl : Error< "multiple methods named %0 found with mismatched result, " "parameter type or attributes">; def warn_arc_lifetime_result_type : Warning< "ARC %select{unused|__unsafe_unretained|__strong|__weak|__autoreleasing}0 " "lifetime qualifier on return type is ignored">, InGroup; let CategoryName = "ARC Retain Cycle" in { def warn_arc_retain_cycle : Warning< "capturing %0 strongly in this block is likely to lead to a retain cycle">, InGroup; def note_arc_retain_cycle_owner : Note< "block will be retained by %select{the captured object|an object strongly " "retained by the captured object}0">; } // end "ARC Retain Cycle" category def warn_arc_object_memaccess : Warning< "%select{destination for|source of}0 this %1 call is a pointer to " "ownership-qualified type %2">, InGroup; let CategoryName = "ARC and @properties" in { def err_arc_strong_property_ownership : Error< "existing instance variable %1 for strong property %0 may not be " "%select{|__unsafe_unretained||__weak}2">; def err_arc_assign_property_ownership : Error< "existing instance variable %1 for property %0 with %select{unsafe_unretained|assign}2 " "attribute must be __unsafe_unretained">; def err_arc_inconsistent_property_ownership : Error< "%select{|unsafe_unretained|strong|weak}1 property %0 may not also be " "declared %select{|__unsafe_unretained|__strong|__weak|__autoreleasing}2">; } // end "ARC and @properties" category def warn_block_capture_autoreleasing : Warning< "block captures an autoreleasing out-parameter, which may result in " "use-after-free bugs">, InGroup; def note_declare_parameter_strong : Note< "declare the parameter __strong or capture a __block __strong variable to " "keep values alive across autorelease pools">; def err_arc_atomic_ownership : Error< "cannot perform atomic operation on a pointer to type %0: type has " "non-trivial ownership">; let CategoryName = "ARC Casting Rules" in { def err_arc_bridge_cast_incompatible : Error< "incompatible types casting %0 to %1 with a %select{__bridge|" "__bridge_transfer|__bridge_retained}2 cast">; def err_arc_bridge_cast_wrong_kind : Error< "cast of %select{Objective-C|block|C}0 pointer type %1 to " "%select{Objective-C|block|C}2 pointer type %3 cannot use %select{__bridge|" "__bridge_transfer|__bridge_retained}4">; def err_arc_cast_requires_bridge : Error< "%select{cast|implicit conversion}0 of %select{Objective-C|block|C}1 " "pointer type %2 to %select{Objective-C|block|C}3 pointer type %4 " "requires a bridged cast">; def note_arc_bridge : Note< "use __bridge to convert directly (no change in ownership)">; def note_arc_cstyle_bridge : Note< "use __bridge with C-style cast to convert directly (no change in ownership)">; def note_arc_bridge_transfer : Note< "use %select{__bridge_transfer|CFBridgingRelease call}1 to transfer " "ownership of a +1 %0 into ARC">; def note_arc_cstyle_bridge_transfer : Note< "use __bridge_transfer with C-style cast to transfer " "ownership of a +1 %0 into ARC">; def note_arc_bridge_retained : Note< "use %select{__bridge_retained|CFBridgingRetain call}1 to make an " "ARC object available as a +1 %0">; def note_arc_cstyle_bridge_retained : Note< "use __bridge_retained with C-style cast to make an " "ARC object available as a +1 %0">; } // ARC Casting category } // ARC category name def err_flexible_array_init_needs_braces : Error< "flexible array requires brace-enclosed initializer">; def err_illegal_decl_array_of_functions : Error< "'%0' declared as array of functions of type %1">; def err_array_incomplete_or_sizeless_type : Error< "array has %select{incomplete|sizeless}0 element type %1">; def err_illegal_message_expr_incomplete_type : Error< "Objective-C message has incomplete result type %0">; def err_illegal_decl_array_of_references : Error< "'%0' declared as array of references of type %1">; def err_decl_negative_array_size : Error< "'%0' declared as an array with a negative size">; def err_array_static_outside_prototype : Error< "%0 used in array declarator outside of function prototype">; def err_array_static_not_outermost : Error< "%0 used in non-outermost array type derivation">; def err_array_star_outside_prototype : Error< "star modifier used outside of function prototype">; def err_illegal_decl_pointer_to_reference : Error< "'%0' declared as a pointer to a reference of type %1">; def err_illegal_decl_mempointer_to_reference : Error< "'%0' declared as a member pointer to a reference of type %1">; def err_illegal_decl_mempointer_to_void : Error< "'%0' declared as a member pointer to void">; def err_illegal_decl_mempointer_in_nonclass : Error< "'%0' does not point into a class">; def err_mempointer_in_nonclass_type : Error< "member pointer refers into non-class type %0">; def err_reference_to_void : Error<"cannot form a reference to 'void'">; def err_nonfunction_block_type : Error< "block pointer to non-function type is invalid">; def err_return_block_has_expr : Error<"void block should not return a value">; def err_block_return_missing_expr : Error< "non-void block should return a value">; def err_func_def_incomplete_result : Error< "incomplete result type %0 in function definition">; def err_atomic_specifier_bad_type : Error<"_Atomic cannot be applied to " "%select{incomplete |array |function |reference |atomic |qualified " "|sizeless ||integer }0type " "%1 %select{|||||||which is not trivially copyable|}0">; // Expressions. def ext_sizeof_alignof_function_type : Extension< "invalid application of '%0' to a function type">, InGroup; def ext_sizeof_alignof_void_type : Extension< "invalid application of '%0' to a void type">, InGroup; def err_opencl_sizeof_alignof_type : Error< "invalid application of '%0' to a void type">; def err_sizeof_alignof_incomplete_or_sizeless_type : Error< "invalid application of '%0' to %select{an incomplete|sizeless}1 type %2">; def err_sizeof_alignof_function_type : Error< "invalid application of '%0' to a function type">; def err_openmp_default_simd_align_expr : Error< "invalid application of '__builtin_omp_required_simd_align' to an expression, only type is allowed">; def err_sizeof_alignof_typeof_bitfield : Error< "invalid application of '%select{sizeof|alignof|typeof}0' to bit-field">; def err_alignof_member_of_incomplete_type : Error< "invalid application of 'alignof' to a field of a class still being defined">; def err_vecstep_non_scalar_vector_type : Error< "'vec_step' requires built-in scalar or vector type, %0 invalid">; def err_offsetof_incomplete_type : Error< "offsetof of incomplete type %0">; def err_offsetof_record_type : Error< "offsetof requires struct, union, or class type, %0 invalid">; def err_offsetof_array_type : Error<"offsetof requires array type, %0 invalid">; def ext_offsetof_non_pod_type : ExtWarn<"offset of on non-POD type %0">, InGroup; def ext_offsetof_non_standardlayout_type : ExtWarn< "offset of on non-standard-layout type %0">, InGroup; def err_offsetof_bitfield : Error<"cannot compute offset of bit-field %0">; def err_offsetof_field_of_virtual_base : Error< "invalid application of 'offsetof' to a field of a virtual base">; def warn_sub_ptr_zero_size_types : Warning< "subtraction of pointers to type %0 of zero size has undefined behavior">, InGroup; def warn_pointer_arith_null_ptr : Warning< "performing pointer arithmetic on a null pointer has undefined behavior%select{| if the offset is nonzero}0">, InGroup, DefaultIgnore; def warn_gnu_null_ptr_arith : Warning< "arithmetic on a null pointer treated as a cast from integer to pointer is a GNU extension">, InGroup, DefaultIgnore; def warn_floatingpoint_eq : Warning< "comparing floating point with == or != is unsafe">, InGroup>, DefaultIgnore; def warn_remainder_division_by_zero : Warning< "%select{remainder|division}0 by zero is undefined">, InGroup; def warn_shift_lhs_negative : Warning<"shifting a negative signed value is undefined">, InGroup>; def warn_shift_negative : Warning<"shift count is negative">, InGroup>; def warn_shift_gt_typewidth : Warning<"shift count >= width of type">, InGroup>; def warn_shift_result_gt_typewidth : Warning< "signed shift result (%0) requires %1 bits to represent, but %2 only has " "%3 bits">, InGroup>; def warn_shift_result_sets_sign_bit : Warning< "signed shift result (%0) sets the sign bit of the shift expression's " "type (%1) and becomes negative">, InGroup>, DefaultIgnore; def warn_precedence_bitwise_rel : Warning< "%0 has lower precedence than %1; %1 will be evaluated first">, InGroup; def note_precedence_bitwise_first : Note< "place parentheses around the %0 expression to evaluate it first">; def note_precedence_silence : Note< "place parentheses around the '%0' expression to silence this warning">; def warn_precedence_conditional : Warning< "operator '?:' has lower precedence than '%0'; '%0' will be evaluated first">, InGroup; def warn_precedence_bitwise_conditional : Warning< "operator '?:' has lower precedence than '%0'; '%0' will be evaluated first">, InGroup; def note_precedence_conditional_first : Note< "place parentheses around the '?:' expression to evaluate it first">; def warn_enum_constant_in_bool_context : Warning< "converting the enum constant to a boolean">, InGroup, DefaultIgnore; def warn_left_shift_in_bool_context : Warning< "converting the result of '<<' to a boolean; did you mean '(%0) != 0'?">, InGroup, DefaultIgnore; def warn_logical_instead_of_bitwise : Warning< "use of logical '%0' with constant operand">, InGroup>; def note_logical_instead_of_bitwise_change_operator : Note< "use '%0' for a bitwise operation">; def note_logical_instead_of_bitwise_remove_constant : Note< "remove constant to silence this warning">; def warn_bitwise_op_in_bitwise_op : Warning< "'%0' within '%1'">, InGroup, DefaultIgnore; def warn_logical_and_in_logical_or : Warning< "'&&' within '||'">, InGroup, DefaultIgnore; def warn_overloaded_shift_in_comparison :Warning< "overloaded operator %select{>>|<<}0 has higher precedence than " "comparison operator">, InGroup; def note_evaluate_comparison_first :Note< "place parentheses around comparison expression to evaluate it first">; def note_concatenated_string_literal_silence :Note< "place parentheses around the string literal to silence warning">; def warn_addition_in_bitshift : Warning< "operator '%0' has lower precedence than '%1'; " "'%1' will be evaluated first">, InGroup; def warn_self_assignment_builtin : Warning< "explicitly assigning value of variable of type %0 to itself">, InGroup, DefaultIgnore; def warn_self_assignment_overloaded : Warning< "explicitly assigning value of variable of type %0 to itself">, InGroup, DefaultIgnore; def warn_self_move : Warning< "explicitly moving variable of type %0 to itself">, InGroup, DefaultIgnore; def warn_redundant_move_on_return : Warning< "redundant move in return statement">, InGroup, DefaultIgnore; def warn_pessimizing_move_on_return : Warning< "moving a local object in a return statement prevents copy elision">, InGroup, DefaultIgnore; def warn_pessimizing_move_on_initialization : Warning< "moving a temporary object prevents copy elision">, InGroup, DefaultIgnore; def note_remove_move : Note<"remove std::move call here">; def warn_return_std_move : Warning< "local variable %0 will be copied despite being %select{returned|thrown}1 by name">, InGroup, DefaultIgnore; def note_add_std_move : Note< "call 'std::move' explicitly to avoid copying">; def warn_return_std_move_in_cxx11 : Warning< "prior to the resolution of a defect report against ISO C++11, " "local variable %0 would have been copied despite being returned by name, " "due to its not matching the function return type%diff{ ($ vs $)|}1,2">, InGroup, DefaultIgnore; def note_add_std_move_in_cxx11 : Note< "call 'std::move' explicitly to avoid copying on older compilers">; def warn_string_plus_int : Warning< "adding %0 to a string does not append to the string">, InGroup; def warn_string_plus_char : Warning< "adding %0 to a string pointer does not append to the string">, InGroup; def note_string_plus_scalar_silence : Note< "use array indexing to silence this warning">; def warn_sizeof_array_param : Warning< "sizeof on array function parameter will return size of %0 instead of %1">, InGroup; def warn_sizeof_array_decay : Warning< "sizeof on pointer operation will return size of %0 instead of %1">, InGroup; def err_sizeof_nonfragile_interface : Error< "application of '%select{alignof|sizeof}1' to interface %0 is " "not supported on this architecture and platform">; def err_atdef_nonfragile_interface : Error< "use of @defs is not supported on this architecture and platform">; def err_subscript_nonfragile_interface : Error< "subscript requires size of interface %0, which is not constant for " "this architecture and platform">; def err_arithmetic_nonfragile_interface : Error< "arithmetic on pointer to interface %0, which is not a constant size for " "this architecture and platform">; def warn_deprecated_comma_subscript : Warning< "top-level comma expression in array subscript is deprecated">, InGroup; def ext_subscript_non_lvalue : Extension< "ISO C90 does not allow subscripting non-lvalue array">; def err_typecheck_subscript_value : Error< "subscripted value is not an array, pointer, or vector">; def err_typecheck_subscript_not_integer : Error< "array subscript is not an integer">; def err_subscript_function_type : Error< "subscript of pointer to function type %0">; def err_subscript_incomplete_or_sizeless_type : Error< "subscript of pointer to %select{incomplete|sizeless}0 type %1">; def err_dereference_incomplete_type : Error< "dereference of pointer to incomplete type %0">; def ext_gnu_subscript_void_type : Extension< "subscript of a pointer to void is a GNU extension">, InGroup; def err_typecheck_member_reference_struct_union : Error< "member reference base type %0 is not a structure or union">; def err_typecheck_member_reference_ivar : Error< "%0 does not have a member named %1">; def err_arc_weak_ivar_access : Error< "dereferencing a __weak pointer is not allowed due to possible " "null value caused by race condition, assign it to strong variable first">; def err_typecheck_member_reference_arrow : Error< "member reference type %0 is not a pointer">; def err_typecheck_member_reference_suggestion : Error< "member reference type %0 is %select{a|not a}1 pointer; did you mean to use '%select{->|.}1'?">; def note_typecheck_member_reference_suggestion : Note< "did you mean to use '.' instead?">; def note_member_reference_arrow_from_operator_arrow : Note< "'->' applied to return value of the operator->() declared here">; def err_typecheck_member_reference_type : Error< "cannot refer to type member %0 in %1 with '%select{.|->}2'">; def err_typecheck_member_reference_unknown : Error< "cannot refer to member %0 in %1 with '%select{.|->}2'">; def err_member_reference_needs_call : Error< "base of member reference is a function; perhaps you meant to call " "it%select{| with no arguments}0?">; def warn_subscript_is_char : Warning<"array subscript is of type 'char'">, InGroup, DefaultIgnore; def err_typecheck_incomplete_tag : Error<"incomplete definition of type %0">; def err_no_member : Error<"no member named %0 in %1">; def err_no_member_overloaded_arrow : Error< "no member named %0 in %1; did you mean to use '->' instead of '.'?">; def err_member_not_yet_instantiated : Error< "no member %0 in %1; it has not yet been instantiated">; def note_non_instantiated_member_here : Note< "not-yet-instantiated member is declared here">; def err_enumerator_does_not_exist : Error< "enumerator %0 does not exist in instantiation of %1">; def note_enum_specialized_here : Note< "enum %0 was explicitly specialized here">; def err_specialization_not_primary_template : Error< "cannot reference member of primary template because deduced class " "template specialization %0 is %select{instantiated from a partial|" "an explicit}1 specialization">; def err_member_redeclared : Error<"class member cannot be redeclared">; def ext_member_redeclared : ExtWarn<"class member cannot be redeclared">, InGroup; def err_member_redeclared_in_instantiation : Error< "multiple overloads of %0 instantiate to the same signature %1">; def err_member_name_of_class : Error<"member %0 has the same name as its class">; def err_member_def_undefined_record : Error< "out-of-line definition of %0 from class %1 without definition">; def err_member_decl_does_not_match : Error< "out-of-line %select{declaration|definition}2 of %0 " "does not match any declaration in %1">; def err_friend_decl_with_def_arg_must_be_def : Error< "friend declaration specifying a default argument must be a definition">; def err_friend_decl_with_def_arg_redeclared : Error< "friend declaration specifying a default argument must be the only declaration">; def err_friend_decl_does_not_match : Error< "friend declaration of %0 does not match any declaration in %1">; def err_member_decl_does_not_match_suggest : Error< "out-of-line %select{declaration|definition}2 of %0 " "does not match any declaration in %1; did you mean %3?">; def err_member_def_does_not_match_ret_type : Error< "return type of out-of-line definition of %q0 differs from " "that in the declaration">; def err_nonstatic_member_out_of_line : Error< "non-static data member defined out-of-line">; def err_qualified_typedef_declarator : Error< "typedef declarator cannot be qualified">; def err_qualified_param_declarator : Error< "parameter declarator cannot be qualified">; def ext_out_of_line_declaration : ExtWarn< "out-of-line declaration of a member must be a definition">, InGroup, DefaultError; def err_member_extra_qualification : Error< "extra qualification on member %0">; def warn_member_extra_qualification : Warning< err_member_extra_qualification.Text>, InGroup; def warn_namespace_member_extra_qualification : Warning< "extra qualification on member %0">, InGroup>; def err_member_qualification : Error< "non-friend class member %0 cannot have a qualified name">; def note_member_def_close_match : Note<"member declaration nearly matches">; def note_member_def_close_const_match : Note< "member declaration does not match because " "it %select{is|is not}0 const qualified">; def note_member_def_close_param_match : Note< "type of %ordinal0 parameter of member declaration does not match definition" "%diff{ ($ vs $)|}1,2">; def note_local_decl_close_match : Note<"local declaration nearly matches">; def note_local_decl_close_param_match : Note< "type of %ordinal0 parameter of local declaration does not match definition" "%diff{ ($ vs $)|}1,2">; def err_typecheck_ivar_variable_size : Error< "instance variables must have a constant size">; def err_ivar_reference_type : Error< "instance variables cannot be of reference type">; def err_typecheck_illegal_increment_decrement : Error< "cannot %select{decrement|increment}1 value of type %0">; def err_typecheck_expect_int : Error< "used type %0 where integer is required">; def err_typecheck_arithmetic_incomplete_or_sizeless_type : Error< "arithmetic on a pointer to %select{an incomplete|sizeless}0 type %1">; def err_typecheck_pointer_arith_function_type : Error< "arithmetic on%select{ a|}0 pointer%select{|s}0 to%select{ the|}2 " "function type%select{|s}2 %1%select{| and %3}2">; def err_typecheck_pointer_arith_void_type : Error< "arithmetic on%select{ a|}0 pointer%select{|s}0 to void">; def err_typecheck_decl_incomplete_type : Error< "variable has incomplete type %0">; def ext_typecheck_decl_incomplete_type : ExtWarn< "tentative definition of variable with internal linkage has incomplete non-array type %0">, InGroup>; def err_tentative_def_incomplete_type : Error< "tentative definition has type %0 that is never completed">; def warn_tentative_incomplete_array : Warning< "tentative array definition assumed to have one element">; def err_typecheck_incomplete_array_needs_initializer : Error< "definition of variable with array type needs an explicit size " "or an initializer">; def err_array_init_not_init_list : Error< "array initializer must be an initializer " "list%select{| or string literal| or wide string literal}0">; def err_array_init_narrow_string_into_wchar : Error< "initializing wide char array with non-wide string literal">; def err_array_init_wide_string_into_char : Error< "initializing char array with wide string literal">; def err_array_init_incompat_wide_string_into_wchar : Error< "initializing wide char array with incompatible wide string literal">; def err_array_init_plain_string_into_char8_t : Error< "initializing 'char8_t' array with plain string literal">; def note_array_init_plain_string_into_char8_t : Note< "add 'u8' prefix to form a 'char8_t' string literal">; def err_array_init_utf8_string_into_char : Error< "%select{|ISO C++20 does not permit }0initialization of char array with " "UTF-8 string literal%select{ is not permitted by '-fchar8_t'|}0">; def warn_cxx20_compat_utf8_string : Warning< "type of UTF-8 string literal will change from array of const char to " "array of const char8_t in C++20">, InGroup, DefaultIgnore; def note_cxx20_compat_utf8_string_remove_u8 : Note< "remove 'u8' prefix to avoid a change of behavior; " "Clang encodes unprefixed narrow string literals as UTF-8">; def err_array_init_different_type : Error< "cannot initialize array %diff{of type $ with array of type $|" "with different type of array}0,1">; def err_array_init_non_constant_array : Error< "cannot initialize array %diff{of type $ with non-constant array of type $|" "with different type of array}0,1">; def ext_array_init_copy : Extension< "initialization of an array " "%diff{of type $ from a compound literal of type $|" "from a compound literal}0,1 is a GNU extension">, InGroup; // This is intentionally not disabled by -Wno-gnu. def ext_array_init_parens : ExtWarn< "parenthesized initialization of a member array is a GNU extension">, InGroup>, DefaultError; def warn_deprecated_string_literal_conversion : Warning< "conversion from string literal to %0 is deprecated">, InGroup; def ext_deprecated_string_literal_conversion : ExtWarn< "ISO C++11 does not allow conversion from string literal to %0">, InGroup, SFINAEFailure; def err_realimag_invalid_type : Error<"invalid type %0 to %1 operator">; def err_typecheck_sclass_fscope : Error< "illegal storage class on file-scoped variable">; def warn_standalone_specifier : Warning<"'%0' ignored on this declaration">, InGroup; def ext_standalone_specifier : ExtWarn<"'%0' is not permitted on a declaration " "of a type">, InGroup; def err_standalone_class_nested_name_specifier : Error< "forward declaration of %select{class|struct|interface|union|enum}0 cannot " "have a nested name specifier">; def err_typecheck_sclass_func : Error<"illegal storage class on function">; def err_static_block_func : Error< "function declared in block scope cannot have 'static' storage class">; def err_typecheck_address_of : Error<"address of %select{bit-field" "|vector element|property expression|register variable|matrix element}0 requested">; def ext_typecheck_addrof_void : Extension< "ISO C forbids taking the address of an expression of type 'void'">; def err_unqualified_pointer_member_function : Error< "must explicitly qualify name of member function when taking its address">; def err_invalid_form_pointer_member_function : Error< "cannot create a non-constant pointer to member function">; def err_address_of_function_with_pass_object_size_params: Error< "cannot take address of function %0 because parameter %1 has " "pass_object_size attribute">; def err_parens_pointer_member_function : Error< "cannot parenthesize the name of a method when forming a member pointer">; def err_typecheck_invalid_lvalue_addrof_addrof_function : Error< "extra '&' taking address of overloaded function">; def err_typecheck_invalid_lvalue_addrof : Error< "cannot take the address of an rvalue of type %0">; def ext_typecheck_addrof_temporary : ExtWarn< "taking the address of a temporary object of type %0">, InGroup, DefaultError; def err_typecheck_addrof_temporary : Error< "taking the address of a temporary object of type %0">; def err_typecheck_addrof_dtor : Error< "taking the address of a destructor">; def err_typecheck_unary_expr : Error< "invalid argument type %0 to unary expression">; def err_typecheck_indirection_requires_pointer : Error< "indirection requires pointer operand (%0 invalid)">; def ext_typecheck_indirection_through_void_pointer : ExtWarn< "ISO C++ does not allow indirection on operand of type %0">, InGroup>; def warn_indirection_through_null : Warning< "indirection of non-volatile null pointer will be deleted, not trap">, InGroup; def warn_binding_null_to_reference : Warning< "binding dereferenced null pointer to reference has undefined behavior">, InGroup; def note_indirection_through_null : Note< "consider using __builtin_trap() or qualifying pointer with 'volatile'">; def warn_pointer_indirection_from_incompatible_type : Warning< "dereference of type %1 that was reinterpret_cast from type %0 has undefined " "behavior">, InGroup, DefaultIgnore; def warn_taking_address_of_packed_member : Warning< "taking address of packed member %0 of class or structure %q1 may result in an unaligned pointer value">, InGroup>; def err_objc_object_assignment : Error< "cannot assign to class object (%0 invalid)">; def err_typecheck_invalid_operands : Error< "invalid operands to binary expression (%0 and %1)">; def note_typecheck_invalid_operands_converted : Note< "%select{first|second}0 operand was implicitly converted to type %1">; def err_typecheck_logical_vector_expr_gnu_cpp_restrict : Error< "logical expression with vector %select{type %1 and non-vector type %2|types" " %1 and %2}0 is only supported in C++">; def err_typecheck_sub_ptr_compatible : Error< "%diff{$ and $ are not pointers to compatible types|" "pointers to incompatible types}0,1">; def ext_typecheck_ordered_comparison_of_pointer_integer : ExtWarn< "ordered comparison between pointer and integer (%0 and %1)">; def ext_typecheck_ordered_comparison_of_pointer_and_zero : Extension< "ordered comparison between pointer and zero (%0 and %1) is an extension">; def err_typecheck_ordered_comparison_of_pointer_and_zero : Error< "ordered comparison between pointer and zero (%0 and %1)">; def err_typecheck_three_way_comparison_of_pointer_and_zero : Error< "three-way comparison between pointer and zero">; def ext_typecheck_compare_complete_incomplete_pointers : Extension< "pointer comparisons before C11 " "need to be between two complete or two incomplete types; " "%0 is %select{|in}2complete and " "%1 is %select{|in}3complete">, InGroup; def ext_typecheck_ordered_comparison_of_function_pointers : ExtWarn< "ordered comparison of function pointers (%0 and %1)">, InGroup>; def ext_typecheck_comparison_of_fptr_to_void : Extension< "equality comparison between function pointer and void pointer (%0 and %1)">; def err_typecheck_comparison_of_fptr_to_void : Error< "equality comparison between function pointer and void pointer (%0 and %1)">; def ext_typecheck_comparison_of_pointer_integer : ExtWarn< "comparison between pointer and integer (%0 and %1)">, InGroup>; def err_typecheck_comparison_of_pointer_integer : Error< "comparison between pointer and integer (%0 and %1)">; def ext_typecheck_comparison_of_distinct_pointers : ExtWarn< "comparison of distinct pointer types%diff{ ($ and $)|}0,1">, InGroup; def ext_typecheck_cond_incompatible_operands : ExtWarn< "incompatible operand types (%0 and %1)">; def err_cond_voidptr_arc : Error < "operands to conditional of types%diff{ $ and $|}0,1 are incompatible " "in ARC mode">; def err_typecheck_comparison_of_distinct_pointers : Error< "comparison of distinct pointer types%diff{ ($ and $)|}0,1">; def err_typecheck_op_on_nonoverlapping_address_space_pointers : Error< "%select{comparison between %diff{ ($ and $)|}0,1" "|arithmetic operation with operands of type %diff{ ($ and $)|}0,1" "|conditional operator with the second and third operands of type " "%diff{ ($ and $)|}0,1}2" " which are pointers to non-overlapping address spaces">; def select_arith_conv_kind : TextSubstitution< "%select{arithmetic between|bitwise operation between|comparison of|" "conditional expression between|compound assignment of}0">; def warn_arith_conv_enum_float : Warning< "%sub{select_arith_conv_kind}0 " "%select{floating-point|enumeration}1 type %2 " "%plural{2:with|4:from|:and}0 " "%select{enumeration|floating-point}1 type %3">, InGroup, DefaultIgnore; def warn_arith_conv_enum_float_cxx20 : Warning< "%sub{select_arith_conv_kind}0 " "%select{floating-point|enumeration}1 type %2 " "%plural{2:with|4:from|:and}0 " "%select{enumeration|floating-point}1 type %3 is deprecated">, InGroup; def warn_arith_conv_mixed_enum_types : Warning< "%sub{select_arith_conv_kind}0 " "different enumeration types%diff{ ($ and $)|}1,2">, InGroup, DefaultIgnore; def warn_arith_conv_mixed_enum_types_cxx20 : Warning< "%sub{select_arith_conv_kind}0 " "different enumeration types%diff{ ($ and $)|}1,2 is deprecated">, InGroup; def warn_arith_conv_mixed_anon_enum_types : Warning< warn_arith_conv_mixed_enum_types.Text>, InGroup, DefaultIgnore; def warn_arith_conv_mixed_anon_enum_types_cxx20 : Warning< warn_arith_conv_mixed_enum_types_cxx20.Text>, InGroup; def warn_conditional_mixed_enum_types : Warning< warn_arith_conv_mixed_enum_types.Text>, InGroup, DefaultIgnore; def warn_conditional_mixed_enum_types_cxx20 : Warning< warn_arith_conv_mixed_enum_types_cxx20.Text>, InGroup; def warn_comparison_mixed_enum_types : Warning< warn_arith_conv_mixed_enum_types.Text>, InGroup; def warn_comparison_mixed_enum_types_cxx20 : Warning< warn_arith_conv_mixed_enum_types_cxx20.Text>, InGroup; def warn_comparison_of_mixed_enum_types_switch : Warning< "comparison of different enumeration types in switch statement" "%diff{ ($ and $)|}0,1">, InGroup; def err_typecheck_assign_const : Error< "%select{" "cannot assign to return value because function %1 returns a const value|" "cannot assign to variable %1 with const-qualified type %2|" "cannot assign to %select{non-|}1static data member %2 " "with const-qualified type %3|" "cannot assign to non-static data member within const member function %1|" "cannot assign to %select{variable %2|non-static data member %2|lvalue}1 " "with %select{|nested }3const-qualified data member %4|" "read-only variable is not assignable}0">; def note_typecheck_assign_const : Note< "%select{" "function %1 which returns const-qualified type %2 declared here|" "variable %1 declared const here|" "%select{non-|}1static data member %2 declared const here|" "member function %q1 is declared const here|" "%select{|nested }1data member %2 declared const here}0">; def warn_unsigned_always_true_comparison : Warning< "result of comparison of %select{%3|unsigned expression}0 %2 " "%select{unsigned expression|%3}0 is always %4">, InGroup, DefaultIgnore; def warn_unsigned_enum_always_true_comparison : Warning< "result of comparison of %select{%3|unsigned enum expression}0 %2 " "%select{unsigned enum expression|%3}0 is always %4">, InGroup, DefaultIgnore; def warn_tautological_constant_compare : Warning< "result of comparison %select{%3|%1}0 %2 " "%select{%1|%3}0 is always %4">, InGroup, DefaultIgnore; def warn_tautological_compare_objc_bool : Warning< "result of comparison of constant %0 with expression of type 'BOOL'" " is always %1, as the only well defined values for 'BOOL' are YES and NO">, InGroup; def subst_int_range : TextSubstitution<"%0-bit %select{signed|unsigned}1 value">; def warn_tautological_compare_value_range : Warning< "result of comparison of " "%select{%4|%sub{subst_int_range}1,2}0 %3 " "%select{%sub{subst_int_range}1,2|%4}0 is always %5">, InGroup, DefaultIgnore; def warn_mixed_sign_comparison : Warning< "comparison of integers of different signs: %0 and %1">, InGroup, DefaultIgnore; def warn_out_of_range_compare : Warning< "result of comparison of %select{constant %0|true|false}1 with " "%select{expression of type %2|boolean expression}3 is always %4">, InGroup; def warn_tautological_bool_compare : Warning, InGroup; def warn_integer_constants_in_conditional_always_true : Warning< "converting the result of '?:' with integer constants to a boolean always " "evaluates to 'true'">, InGroup; def warn_left_shift_always : Warning< "converting the result of '<<' to a boolean always evaluates " "to %select{false|true}0">, InGroup; def warn_null_in_arithmetic_operation : Warning< "use of NULL in arithmetic operation">, InGroup; def warn_null_in_comparison_operation : Warning< "comparison between NULL and non-pointer " "%select{(%1 and NULL)|(NULL and %1)}0">, InGroup; def err_shift_rhs_only_vector : Error< "requested shift is a vector of type %0 but the first operand is not a " "vector (%1)">; def warn_logical_not_on_lhs_of_check : Warning< "logical not is only applied to the left hand side of this " "%select{comparison|bitwise operator}0">, InGroup; def note_logical_not_fix : Note< "add parentheses after the '!' to evaluate the " "%select{comparison|bitwise operator}0 first">; def note_logical_not_silence_with_parens : Note< "add parentheses around left hand side expression to silence this warning">; def err_invalid_this_use : Error< "invalid use of 'this' outside of a non-static member function">; def err_this_static_member_func : Error< "'this' cannot be%select{| implicitly}0 used in a static member function " "declaration">; def err_invalid_member_use_in_static_method : Error< "invalid use of member %0 in static member function">; def err_invalid_qualified_function_type : Error< "%select{non-member function|static member function|deduction guide}0 " "%select{of type %2 |}1cannot have '%3' qualifier">; def err_compound_qualified_function_type : Error< "%select{block pointer|pointer|reference}0 to function type %select{%2 |}1" "cannot have '%3' qualifier">; def err_qualified_function_typeid : Error< "type operand %0 of 'typeid' cannot have '%1' qualifier">; def err_ref_qualifier_overload : Error< "cannot overload a member function %select{without a ref-qualifier|with " "ref-qualifier '&'|with ref-qualifier '&&'}0 with a member function %select{" "without a ref-qualifier|with ref-qualifier '&'|with ref-qualifier '&&'}1">; def err_invalid_non_static_member_use : Error< "invalid use of non-static data member %0">; def err_nested_non_static_member_use : Error< "%select{call to non-static member function|use of non-static data member}0 " "%2 of %1 from nested type %3">; def warn_cxx98_compat_non_static_member_use : Warning< "use of non-static data member %0 in an unevaluated context is " "incompatible with C++98">, InGroup, DefaultIgnore; def err_invalid_incomplete_type_use : Error< "invalid use of incomplete type %0">; def err_builtin_func_cast_more_than_one_arg : Error< "function-style cast to a builtin type can only take one argument">; def err_value_init_for_array_type : Error< "array types cannot be value-initialized">; def err_init_for_function_type : Error< "cannot create object of function type %0">; def warn_format_nonliteral_noargs : Warning< "format string is not a string literal (potentially insecure)">, InGroup; def warn_format_nonliteral : Warning< "format string is not a string literal">, InGroup, DefaultIgnore; def err_unexpected_interface : Error< "unexpected interface name %0: expected expression">; def err_ref_non_value : Error<"%0 does not refer to a value">; def err_ref_vm_type : Error< "cannot refer to declaration with a variably modified type inside block">; def err_ref_flexarray_type : Error< "cannot refer to declaration of structure variable with flexible array member " "inside block">; def err_ref_array_type : Error< "cannot refer to declaration with an array type inside block">; def err_property_not_found : Error< "property %0 not found on object of type %1">; def err_invalid_property_name : Error< "%0 is not a valid property name (accessing an object of type %1)">; def err_getter_not_found : Error< "no getter method for read from property">; def err_objc_subscript_method_not_found : Error< "expected method to %select{read|write}1 %select{dictionary|array}2 element not " "found on object of type %0">; def err_objc_subscript_index_type : Error< "method index parameter type %0 is not integral type">; def err_objc_subscript_key_type : Error< "method key parameter type %0 is not object type">; def err_objc_subscript_dic_object_type : Error< "method object parameter type %0 is not object type">; def err_objc_subscript_object_type : Error< "cannot assign to this %select{dictionary|array}1 because assigning method's " "2nd parameter of type %0 is not an Objective-C pointer type">; def err_objc_subscript_base_type : Error< "%select{dictionary|array}1 subscript base type %0 is not an Objective-C object">; def err_objc_multiple_subscript_type_conversion : Error< "indexing expression is invalid because subscript type %0 has " "multiple type conversion functions">; def err_objc_subscript_type_conversion : Error< "indexing expression is invalid because subscript type %0 is not an integral" " or Objective-C pointer type">; def err_objc_subscript_pointer : Error< "indexing expression is invalid because subscript type %0 is not an" " Objective-C pointer">; def err_objc_indexing_method_result_type : Error< "method for accessing %select{dictionary|array}1 element must have Objective-C" " object return type instead of %0">; def err_objc_index_incomplete_class_type : Error< "Objective-C index expression has incomplete class type %0">; def err_illegal_container_subscripting_op : Error< "illegal operation on Objective-C container subscripting">; def err_property_not_found_forward_class : Error< "property %0 cannot be found in forward class object %1">; def err_property_not_as_forward_class : Error< "property %0 refers to an incomplete Objective-C class %1 " "(with no @interface available)">; def note_forward_class : Note< "forward declaration of class here">; def err_duplicate_property : Error< "property has a previous declaration">; def ext_gnu_void_ptr : Extension< "arithmetic on%select{ a|}0 pointer%select{|s}0 to void is a GNU extension">, InGroup; def ext_gnu_ptr_func_arith : Extension< "arithmetic on%select{ a|}0 pointer%select{|s}0 to%select{ the|}2 function " "type%select{|s}2 %1%select{| and %3}2 is a GNU extension">, InGroup; def err_readonly_message_assignment : Error< "assigning to 'readonly' return result of an Objective-C message not allowed">; def ext_integer_increment_complex : Extension< "ISO C does not support '++'/'--' on complex integer type %0">; def ext_integer_complement_complex : Extension< "ISO C does not support '~' for complex conjugation of %0">; def err_nosetter_property_assignment : Error< "%select{assignment to readonly property|" "no setter method %1 for assignment to property}0">; def err_nosetter_property_incdec : Error< "%select{%select{increment|decrement}1 of readonly property|" "no setter method %2 for %select{increment|decrement}1 of property}0">; def err_nogetter_property_compound_assignment : Error< "a getter method is needed to perform a compound assignment on a property">; def err_nogetter_property_incdec : Error< "no getter method %1 for %select{increment|decrement}0 of property">; def err_no_subobject_property_setting : Error< "expression is not assignable">; def err_qualified_objc_access : Error< "%select{property|instance variable}0 access cannot be qualified with '%1'">; def ext_freestanding_complex : Extension< "complex numbers are an extension in a freestanding C99 implementation">; // FIXME: Remove when we support imaginary. def err_imaginary_not_supported : Error<"imaginary types are not supported">; // Obj-c expressions def warn_root_inst_method_not_found : Warning< "instance method %0 is being used on 'Class' which is not in the root class">, InGroup; def warn_class_method_not_found : Warning< "class method %objcclass0 not found (return type defaults to 'id')">, InGroup; def warn_instance_method_on_class_found : Warning< "instance method %0 found instead of class method %1">, InGroup; def warn_inst_method_not_found : Warning< "instance method %objcinstance0 not found (return type defaults to 'id')">, InGroup; def warn_instance_method_not_found_with_typo : Warning< "instance method %objcinstance0 not found (return type defaults to 'id')" "; did you mean %objcinstance2?">, InGroup; def warn_class_method_not_found_with_typo : Warning< "class method %objcclass0 not found (return type defaults to 'id')" "; did you mean %objcclass2?">, InGroup; def err_method_not_found_with_typo : Error< "%select{instance|class}1 method %0 not found " "; did you mean %2?">; def err_no_super_class_message : Error< "no @interface declaration found in class messaging of %0">; def err_root_class_cannot_use_super : Error< "%0 cannot use 'super' because it is a root class">; def err_invalid_receiver_to_message_super : Error< "'super' is only valid in a method body">; def err_invalid_receiver_class_message : Error< "receiver type %0 is not an Objective-C class">; def err_missing_open_square_message_send : Error< "missing '[' at start of message send expression">; def warn_bad_receiver_type : Warning< "receiver type %0 is not 'id' or interface pointer, consider " "casting it to 'id'">,InGroup; def err_bad_receiver_type : Error<"bad receiver type %0">; def err_incomplete_receiver_type : Error<"incomplete receiver type %0">; def err_unknown_receiver_suggest : Error< "unknown receiver %0; did you mean %1?">; def err_objc_throw_expects_object : Error< "@throw requires an Objective-C object type (%0 invalid)">; def err_objc_synchronized_expects_object : Error< "@synchronized requires an Objective-C object type (%0 invalid)">; def err_rethrow_used_outside_catch : Error< "@throw (rethrow) used outside of a @catch block">; def err_attribute_multiple_objc_gc : Error< "multiple garbage collection attributes specified for type">; def err_catch_param_not_objc_type : Error< "@catch parameter is not a pointer to an interface type">; def err_illegal_qualifiers_on_catch_parm : Error< "illegal qualifiers on @catch parameter">; def err_storage_spec_on_catch_parm : Error< "@catch parameter cannot have storage specifier '%0'">; def warn_register_objc_catch_parm : Warning< "'register' storage specifier on @catch parameter will be ignored">; def err_qualified_objc_catch_parm : Error< "@catch parameter declarator cannot be qualified">; def warn_objc_pointer_cxx_catch_fragile : Warning< "cannot catch an exception thrown with @throw in C++ in the non-unified " "exception model">, InGroup; def err_objc_object_catch : Error< "cannot catch an Objective-C object by value">; def err_incomplete_type_objc_at_encode : Error< "'@encode' of incomplete type %0">; def warn_objc_circular_container : Warning< "adding %0 to %1 might cause circular dependency in container">, InGroup>; def note_objc_circular_container_declared_here : Note<"%0 declared here">; def warn_objc_unsafe_perform_selector : Warning< "%0 is incompatible with selectors that return a " "%select{struct|union|vector}1 type">, InGroup>; def note_objc_unsafe_perform_selector_method_declared_here : Note< "method %0 that returns %1 declared here">; def err_attribute_arm_builtin_alias : Error< "'__clang_arm_builtin_alias' attribute can only be applied to an ARM builtin">; def err_attribute_arm_mve_polymorphism : Error< "'__clang_arm_mve_strict_polymorphism' attribute can only be applied to an MVE/NEON vector type">; def warn_setter_getter_impl_required : Warning< "property %0 requires method %1 to be defined - " "use @synthesize, @dynamic or provide a method implementation " "in this class implementation">, InGroup; def warn_setter_getter_impl_required_in_category : Warning< "property %0 requires method %1 to be defined - " "use @dynamic or provide a method implementation in this category">, InGroup; def note_parameter_named_here : Note< "passing argument to parameter %0 here">; def note_parameter_here : Note< "passing argument to parameter here">; def note_method_return_type_change : Note< "compiler has implicitly changed method %0 return type">; def warn_impl_required_for_class_property : Warning< "class property %0 requires method %1 to be defined - " "use @dynamic or provide a method implementation " "in this class implementation">, InGroup; def warn_impl_required_in_category_for_class_property : Warning< "class property %0 requires method %1 to be defined - " "use @dynamic or provide a method implementation in this category">, InGroup; // C++ casts // These messages adhere to the TryCast pattern: %0 is an int specifying the // cast type, %1 is the source type, %2 is the destination type. def err_bad_reinterpret_cast_overload : Error< "reinterpret_cast cannot resolve overloaded function %0 to type %1">; def warn_reinterpret_different_from_static : Warning< "'reinterpret_cast' %select{from|to}3 class %0 %select{to|from}3 its " "%select{virtual base|base at non-zero offset}2 %1 behaves differently from " "'static_cast'">, InGroup; def note_reinterpret_updowncast_use_static: Note< "use 'static_cast' to adjust the pointer correctly while " "%select{upcasting|downcasting}0">; def err_bad_static_cast_overload : Error< "address of overloaded function %0 cannot be static_cast to type %1">; def err_bad_cstyle_cast_overload : Error< "address of overloaded function %0 cannot be cast to type %1">; def err_bad_cxx_cast_generic : Error< "%select{const_cast|static_cast|reinterpret_cast|dynamic_cast|" "C-style cast|functional-style cast|addrspace_cast}0 from %1 to %2 is not allowed">; def err_bad_cxx_cast_unrelated_class : Error< "%select{const_cast|static_cast|reinterpret_cast|dynamic_cast|C-style cast|" "functional-style cast|}0 from %1 to %2, which are not related by " "inheritance, is not allowed">; def note_type_incomplete : Note<"%0 is incomplete">; def err_bad_cxx_cast_rvalue : Error< "%select{const_cast|static_cast|reinterpret_cast|dynamic_cast|C-style cast|" "functional-style cast|addrspace_cast}0 from rvalue to reference type %2">; def err_bad_cxx_cast_bitfield : Error< "%select{const_cast|static_cast|reinterpret_cast|dynamic_cast|C-style cast|" "functional-style cast|}0 from bit-field lvalue to reference type %2">; def err_bad_cxx_cast_qualifiers_away : Error< "%select{const_cast|static_cast|reinterpret_cast|dynamic_cast|C-style cast|" "functional-style cast|}0 from %1 to %2 casts away qualifiers">; def err_bad_cxx_cast_addr_space_mismatch : Error< "%select{const_cast|static_cast|reinterpret_cast|dynamic_cast|" "C-style cast|functional-style cast|addrspace_cast}0 from %1 to %2 converts between mismatching address" " spaces">; def ext_bad_cxx_cast_qualifiers_away_incoherent : ExtWarn< "ISO C++ does not allow " "%select{const_cast|static_cast|reinterpret_cast|dynamic_cast|C-style cast|" "functional-style cast|}0 from %1 to %2 because it casts away qualifiers, " "even though the source and destination types are unrelated">, SFINAEFailure, InGroup>; def err_bad_const_cast_dest : Error< "%select{const_cast||||C-style cast|functional-style cast|}0 to %2, " "which is not a reference, pointer-to-object, or pointer-to-data-member">; def ext_cast_fn_obj : Extension< "cast between pointer-to-function and pointer-to-object is an extension">; def ext_ms_cast_fn_obj : ExtWarn< "static_cast between pointer-to-function and pointer-to-object is a " "Microsoft extension">, InGroup; def warn_cxx98_compat_cast_fn_obj : Warning< "cast between pointer-to-function and pointer-to-object is incompatible with C++98">, InGroup, DefaultIgnore; def err_bad_reinterpret_cast_small_int : Error< "cast from pointer to smaller type %2 loses information">; def err_bad_cxx_cast_vector_to_scalar_different_size : Error< "%select{||reinterpret_cast||C-style cast||}0 from vector %1 " "to scalar %2 of different size">; def err_bad_cxx_cast_scalar_to_vector_different_size : Error< "%select{||reinterpret_cast||C-style cast||}0 from scalar %1 " "to vector %2 of different size">; def err_bad_cxx_cast_vector_to_vector_different_size : Error< "%select{||reinterpret_cast||C-style cast||}0 from vector %1 " "to vector %2 of different size">; def warn_bad_cxx_cast_nested_pointer_addr_space : Warning< "%select{reinterpret_cast|C-style cast}0 from %1 to %2 " "changes address space of nested pointers">, InGroup; def err_bad_lvalue_to_rvalue_cast : Error< "cannot cast from lvalue of type %1 to rvalue reference type %2; types are " "not compatible">; def err_bad_rvalue_to_rvalue_cast : Error< "cannot cast from rvalue of type %1 to rvalue reference type %2; types are " "not compatible">; def err_bad_static_cast_pointer_nonpointer : Error< "cannot cast from type %1 to pointer type %2">; def err_bad_static_cast_member_pointer_nonmp : Error< "cannot cast from type %1 to member pointer type %2">; def err_bad_cxx_cast_member_pointer_size : Error< "cannot %select{||reinterpret_cast||C-style cast||}0 from member pointer " "type %1 to member pointer type %2 of different size">; def err_bad_reinterpret_cast_reference : Error< "reinterpret_cast of a %0 to %1 needs its address, which is not allowed">; def warn_undefined_reinterpret_cast : Warning< "reinterpret_cast from %0 to %1 has undefined behavior">, InGroup, DefaultIgnore; // These messages don't adhere to the pattern. // FIXME: Display the path somehow better. def err_ambiguous_base_to_derived_cast : Error< "ambiguous cast from base %0 to derived %1:%2">; def err_static_downcast_via_virtual : Error< "cannot cast %0 to %1 via virtual base %2">; def err_downcast_from_inaccessible_base : Error< "cannot cast %select{private|protected}2 base class %1 to %0">; def err_upcast_to_inaccessible_base : Error< "cannot cast %0 to its %select{private|protected}2 base class %1">; def err_bad_dynamic_cast_not_ref_or_ptr : Error< "invalid target type %0 for dynamic_cast; target type must be a reference or pointer type to a defined class">; def err_bad_dynamic_cast_not_class : Error<"%0 is not a class type">; def err_bad_cast_incomplete : Error<"%0 is an incomplete type">; def err_bad_dynamic_cast_not_ptr : Error<"cannot use dynamic_cast to convert from %0 to %1">; def err_bad_dynamic_cast_not_polymorphic : Error<"%0 is not polymorphic">; // Other C++ expressions def err_need_header_before_typeid : Error< "you need to include before using the 'typeid' operator">; def err_need_header_before_ms_uuidof : Error< "you need to include before using the '__uuidof' operator">; def err_ms___leave_not_in___try : Error< "'__leave' statement not in __try block">; def err_uuidof_without_guid : Error< "cannot call operator __uuidof on a type with no GUID">; def err_uuidof_with_multiple_guids : Error< "cannot call operator __uuidof on a type with multiple GUIDs">; def err_incomplete_typeid : Error<"'typeid' of incomplete type %0">; def err_variably_modified_typeid : Error<"'typeid' of variably modified type %0">; def err_static_illegal_in_new : Error< "the 'static' modifier for the array size is not legal in new expressions">; def err_array_new_needs_size : Error< "array size must be specified in new expression with no initializer">; def err_bad_new_type : Error< "cannot allocate %select{function|reference}1 type %0 with new">; def err_new_incomplete_or_sizeless_type : Error< "allocation of %select{incomplete|sizeless}0 type %1">; def err_new_array_nonconst : Error< "only the first dimension of an allocated array may have dynamic size">; def err_new_array_size_unknown_from_init : Error< "cannot determine allocated array size from initializer">; def err_new_array_init_args : Error< "array 'new' cannot have initialization arguments">; def ext_new_paren_array_nonconst : ExtWarn< "when type is in parentheses, array cannot have dynamic size">; def err_placement_new_non_placement_delete : Error< "'new' expression with placement arguments refers to non-placement " "'operator delete'">; def err_array_size_not_integral : Error< "array size expression must have integral or %select{|unscoped }0" "enumeration type, not %1">; def err_array_size_incomplete_type : Error< "array size expression has incomplete class type %0">; def err_array_size_explicit_conversion : Error< "array size expression of type %0 requires explicit conversion to type %1">; def note_array_size_conversion : Note< "conversion to %select{integral|enumeration}0 type %1 declared here">; def err_array_size_ambiguous_conversion : Error< "ambiguous conversion of array size expression of type %0 to an integral or " "enumeration type">; def ext_array_size_conversion : Extension< "implicit conversion from array size expression of type %0 to " "%select{integral|enumeration}1 type %2 is a C++11 extension">, InGroup; def warn_cxx98_compat_array_size_conversion : Warning< "implicit conversion from array size expression of type %0 to " "%select{integral|enumeration}1 type %2 is incompatible with C++98">, InGroup, DefaultIgnore; def err_address_space_qualified_new : Error< "'new' cannot allocate objects of type %0 in address space '%1'">; def err_address_space_qualified_delete : Error< "'delete' cannot delete objects of type %0 in address space '%1'">; def err_default_init_const : Error< "default initialization of an object of const type %0" "%select{| without a user-provided default constructor}1">; def ext_default_init_const : ExtWarn< "default initialization of an object of const type %0" "%select{| without a user-provided default constructor}1 " "is a Microsoft extension">, InGroup; def err_delete_operand : Error<"cannot delete expression of type %0">; def ext_delete_void_ptr_operand : ExtWarn< "cannot delete expression with pointer-to-'void' type %0">, InGroup; def err_ambiguous_delete_operand : Error< "ambiguous conversion of delete expression of type %0 to a pointer">; def warn_delete_incomplete : Warning< "deleting pointer to incomplete type %0 may cause undefined behavior">, InGroup; def err_delete_incomplete_class_type : Error< "deleting incomplete class type %0; no conversions to pointer type">; def err_delete_explicit_conversion : Error< "converting delete expression from type %0 to type %1 invokes an explicit " "conversion function">; def note_delete_conversion : Note<"conversion to pointer type %0">; def warn_delete_array_type : Warning< "'delete' applied to a pointer-to-array type %0 treated as 'delete[]'">; def warn_mismatched_delete_new : Warning< "'delete%select{|[]}0' applied to a pointer that was allocated with " "'new%select{[]|}0'; did you mean 'delete%select{[]|}0'?">, InGroup>; def note_allocated_here : Note<"allocated with 'new%select{[]|}0' here">; def err_no_suitable_delete_member_function_found : Error< "no suitable member %0 in %1">; def err_ambiguous_suitable_delete_member_function_found : Error< "multiple suitable %0 functions in %1">; def warn_ambiguous_suitable_delete_function_found : Warning< "multiple suitable %0 functions for %1; no 'operator delete' function " "will be invoked if initialization throws an exception">, InGroup>; def note_member_declared_here : Note< "member %0 declared here">; def note_member_first_declared_here : Note< "member %0 first declared here">; def warn_bitwise_negation_bool : Warning< "bitwise negation of a boolean expression%select{;| always evaluates to 'true';}0 " "did you mean logical negation?">, InGroup>; def err_decrement_bool : Error<"cannot decrement expression of type bool">; def warn_increment_bool : Warning< "incrementing expression of type bool is deprecated and " "incompatible with C++17">, InGroup; def ext_increment_bool : ExtWarn< "ISO C++17 does not allow incrementing expression of type bool">, DefaultError, InGroup; def err_increment_decrement_enum : Error< "cannot %select{decrement|increment}0 expression of enum type %1">; def warn_deprecated_increment_decrement_volatile : Warning< "%select{decrement|increment}0 of object of volatile-qualified type %1 " "is deprecated">, InGroup; def warn_deprecated_simple_assign_volatile : Warning< "use of result of assignment to object of volatile-qualified type %0 " "is deprecated">, InGroup; def warn_deprecated_compound_assign_volatile : Warning< "compound assignment to object of volatile-qualified type %0 is deprecated">, InGroup; def warn_deprecated_volatile_return : Warning< "volatile-qualified return type %0 is deprecated">, InGroup; def warn_deprecated_volatile_param : Warning< "volatile-qualified parameter type %0 is deprecated">, InGroup; def warn_deprecated_volatile_structured_binding : Warning< "volatile qualifier in structured binding declaration is deprecated">, InGroup; def err_catch_incomplete_ptr : Error< "cannot catch pointer to incomplete type %0">; def err_catch_incomplete_ref : Error< "cannot catch reference to incomplete type %0">; def err_catch_incomplete : Error<"cannot catch incomplete type %0">; def err_catch_sizeless : Error< "cannot catch %select{|reference to }0sizeless type %1">; def err_catch_rvalue_ref : Error<"cannot catch exceptions by rvalue reference">; def err_catch_variably_modified : Error< "cannot catch variably modified type %0">; def err_qualified_catch_declarator : Error< "exception declarator cannot be qualified">; def err_early_catch_all : Error<"catch-all handler must come last">; def err_bad_memptr_rhs : Error< "right hand operand to %0 has non-pointer-to-member type %1">; def err_bad_memptr_lhs : Error< "left hand operand to %0 must be a %select{|pointer to }1class " "compatible with the right hand operand, but is %2">; def err_memptr_incomplete : Error< "member pointer has incomplete base type %0">; def warn_exception_caught_by_earlier_handler : Warning< "exception of type %0 will be caught by earlier handler">, InGroup; def note_previous_exception_handler : Note<"for type %0">; def err_exceptions_disabled : Error< "cannot use '%0' with exceptions disabled">; def err_objc_exceptions_disabled : Error< "cannot use '%0' with Objective-C exceptions disabled">; def warn_throw_in_noexcept_func : Warning< "%0 has a non-throwing exception specification but can still throw">, InGroup; def note_throw_in_dtor : Note< "%select{destructor|deallocator}0 has a %select{non-throwing|implicit " "non-throwing}1 exception specification">; def note_throw_in_function : Note<"function declared non-throwing here">; def err_seh_try_outside_functions : Error< "cannot use SEH '__try' in blocks, captured regions, or Obj-C method decls">; def err_mixing_cxx_try_seh_try : Error< "cannot use C++ 'try' in the same function as SEH '__try'">; def err_seh_try_unsupported : Error< "SEH '__try' is not supported on this target">; def note_conflicting_try_here : Note< "conflicting %0 here">; def warn_jump_out_of_seh_finally : Warning< "jump out of __finally block has undefined behavior">, InGroup>; def warn_non_virtual_dtor : Warning< "%0 has virtual functions but non-virtual destructor">, InGroup, DefaultIgnore; def warn_delete_non_virtual_dtor : Warning< "%select{delete|destructor}0 called on non-final %1 that has " "virtual functions but non-virtual destructor">, InGroup, DefaultIgnore, ShowInSystemHeader; def note_delete_non_virtual : Note< "qualify call to silence this warning">; def warn_delete_abstract_non_virtual_dtor : Warning< "%select{delete|destructor}0 called on %1 that is abstract but has " "non-virtual destructor">, InGroup, ShowInSystemHeader; def warn_overloaded_virtual : Warning< "%q0 hides overloaded virtual %select{function|functions}1">, InGroup, DefaultIgnore; def note_hidden_overloaded_virtual_declared_here : Note< "hidden overloaded virtual function %q0 declared here" "%select{|: different classes%diff{ ($ vs $)|}2,3" "|: different number of parameters (%2 vs %3)" "|: type mismatch at %ordinal2 parameter%diff{ ($ vs $)|}3,4" "|: different return type%diff{ ($ vs $)|}2,3" "|: different qualifiers (%2 vs %3)" "|: different exception specifications}1">; def warn_using_directive_in_header : Warning< "using namespace directive in global context in header">, InGroup, DefaultIgnore; def warn_overaligned_type : Warning< "type %0 requires %1 bytes of alignment and the default allocator only " "guarantees %2 bytes">, InGroup, DefaultIgnore; def err_aligned_allocation_unavailable : Error< "aligned %select{allocation|deallocation}0 function of type '%1' is " "%select{only|not}4 available on %2%select{ %3 or newer|}4">; def note_silence_aligned_allocation_unavailable : Note< "if you supply your own aligned allocation functions, use " "-faligned-allocation to silence this diagnostic">; def err_conditional_void_nonvoid : Error< "%select{left|right}1 operand to ? is void, but %select{right|left}1 operand " "is of type %0">; def err_conditional_ambiguous : Error< "conditional expression is ambiguous; " "%diff{$ can be converted to $ and vice versa|" "types can be convert to each other}0,1">; def err_conditional_ambiguous_ovl : Error< "conditional expression is ambiguous; %diff{$ and $|types}0,1 " "can be converted to several common types">; def err_conditional_vector_size : Error< "vector condition type %0 and result type %1 do not have the same number " "of elements">; def err_conditional_vector_element_size : Error< "vector condition type %0 and result type %1 do not have elements of the " "same size">; def err_conditional_vector_has_void : Error< "GNU vector conditional operand cannot be %select{void|a throw expression}0">; def err_conditional_vector_operand_type : Error<"%select{enumeration|extended vector}0 type %1 is not allowed in a " "vector conditional">; def err_conditional_vector_mismatched_vectors : Error<"vector operands to the vector conditional must be the same type " "%diff{($ and $)|}0,1}">; def err_throw_incomplete : Error< "cannot throw object of incomplete type %0">; def err_throw_incomplete_ptr : Error< "cannot throw pointer to object of incomplete type %0">; def err_throw_sizeless : Error< "cannot throw object of sizeless type %0">; def warn_throw_underaligned_obj : Warning< "underaligned exception object thrown">, InGroup; def note_throw_underaligned_obj : Note< "required alignment of type %0 (%1 bytes) is larger than the supported " "alignment of C++ exception objects on this target (%2 bytes)">; def err_return_in_constructor_handler : Error< "return in the catch of a function try block of a constructor is illegal">; def warn_cdtor_function_try_handler_mem_expr : Warning< "cannot refer to a non-static member from the handler of a " "%select{constructor|destructor}0 function try block">, InGroup; let CategoryName = "Lambda Issue" in { def err_capture_more_than_once : Error< "%0 can appear only once in a capture list">; def err_reference_capture_with_reference_default : Error< "'&' cannot precede a capture when the capture default is '&'">; def err_copy_capture_with_copy_default : Error< "'&' must precede a capture when the capture default is '='">; def err_capture_does_not_name_variable : Error< "%0 in capture list does not name a variable">; def err_capture_non_automatic_variable : Error< "%0 cannot be captured because it does not have automatic storage " "duration">; def err_this_capture : Error< "'this' cannot be %select{implicitly |}0captured in this context">; def err_lambda_capture_anonymous_var : Error< "unnamed variable cannot be implicitly captured in a lambda expression">; def err_lambda_capture_flexarray_type : Error< "variable %0 with flexible array member cannot be captured in " "a lambda expression">; def err_lambda_impcap : Error< "variable %0 cannot be implicitly captured in a lambda with no " "capture-default specified">; def note_lambda_decl : Note<"lambda expression begins here">; def err_lambda_unevaluated_operand : Error< "lambda expression in an unevaluated operand">; def err_lambda_in_constant_expression : Error< "a lambda expression may not appear inside of a constant expression">; def err_lambda_in_invalid_context : Error< "a lambda expression cannot appear in this context">; def err_lambda_return_init_list : Error< "cannot deduce lambda return type from initializer list">; def err_lambda_capture_default_arg : Error< "lambda expression in default argument cannot capture any entity">; def err_lambda_incomplete_result : Error< "incomplete result type %0 in lambda expression">; def err_noreturn_lambda_has_return_expr : Error< "lambda declared 'noreturn' should not return">; def warn_maybe_falloff_nonvoid_lambda : Warning< "non-void lambda does not return a value in all control paths">, InGroup; def warn_falloff_nonvoid_lambda : Warning< "non-void lambda does not return a value">, InGroup; def err_access_lambda_capture : Error< // The ERRORs represent other special members that aren't constructors, in // hopes that someone will bother noticing and reporting if they appear "capture of variable '%0' as type %1 calls %select{private|protected}3 " "%select{default |copy |move |*ERROR* |*ERROR* |*ERROR* |}2constructor">, AccessControl; def note_lambda_to_block_conv : Note< "implicit capture of lambda object due to conversion to block pointer " "here">; def note_var_explicitly_captured_here : Note<"variable %0 is" "%select{| explicitly}1 captured here">; // C++14 lambda init-captures. def warn_cxx11_compat_init_capture : Warning< "initialized lambda captures are incompatible with C++ standards " "before C++14">, InGroup, DefaultIgnore; def ext_init_capture : ExtWarn< "initialized lambda captures are a C++14 extension">, InGroup; def err_init_capture_no_expression : Error< "initializer missing for lambda capture %0">; def err_init_capture_multiple_expressions : Error< "initializer for lambda capture %0 contains multiple expressions">; def err_init_capture_paren_braces : Error< "cannot deduce type for lambda capture %1 from " "%select{parenthesized|nested}0 initializer list">; def err_init_capture_deduction_failure : Error< "cannot deduce type for lambda capture %0 from initializer of type %2">; def err_init_capture_deduction_failure_from_init_list : Error< "cannot deduce type for lambda capture %0 from initializer list">; def warn_cxx17_compat_init_capture_pack : Warning< "initialized lambda capture packs are incompatible with C++ standards " "before C++20">, InGroup, DefaultIgnore; def ext_init_capture_pack : ExtWarn< "initialized lambda pack captures are a C++20 extension">, InGroup; // C++14 generic lambdas. def warn_cxx11_compat_generic_lambda : Warning< "generic lambdas are incompatible with C++11">, InGroup, DefaultIgnore; // C++17 '*this' captures. def warn_cxx14_compat_star_this_lambda_capture : Warning< "by value capture of '*this' is incompatible with C++ standards before C++17">, InGroup, DefaultIgnore; def ext_star_this_lambda_capture_cxx17 : ExtWarn< "capture of '*this' by copy is a C++17 extension">, InGroup; // C++17 parameter shadows capture def err_parameter_shadow_capture : Error< "a lambda parameter cannot shadow an explicitly captured entity">; // C++20 [=, this] captures. def warn_cxx17_compat_equals_this_lambda_capture : Warning< "explicit capture of 'this' with a capture default of '=' is incompatible " "with C++ standards before C++20">, InGroup, DefaultIgnore; def ext_equals_this_lambda_capture_cxx20 : ExtWarn< "explicit capture of 'this' with a capture default of '=' " "is a C++20 extension">, InGroup; def warn_deprecated_this_capture : Warning< "implicit capture of 'this' with a capture default of '=' is deprecated">, InGroup, DefaultIgnore; def note_deprecated_this_capture : Note< "add an explicit capture of 'this' to capture '*this' by reference">; // C++20 default constructible / assignable lambdas. def warn_cxx17_compat_lambda_def_ctor_assign : Warning< "%select{default construction|assignment}0 of lambda is incompatible with " "C++ standards before C++20">, InGroup, DefaultIgnore; } def err_return_in_captured_stmt : Error< "cannot return from %0">; def err_capture_block_variable : Error< "__block variable %0 cannot be captured in a " "%select{lambda expression|captured statement}1">; def err_operator_arrow_circular : Error< "circular pointer delegation detected">; def err_operator_arrow_depth_exceeded : Error< "use of 'operator->' on type %0 would invoke a sequence of more than %1 " "'operator->' calls">; def note_operator_arrow_here : Note< "'operator->' declared here produces an object of type %0">; def note_operator_arrows_suppressed : Note< "(skipping %0 'operator->'%s0 in backtrace)">; def note_operator_arrow_depth : Note< "use -foperator-arrow-depth=N to increase 'operator->' limit">; def err_pseudo_dtor_base_not_scalar : Error< "object expression of non-scalar type %0 cannot be used in a " "pseudo-destructor expression">; def ext_pseudo_dtor_on_void : ExtWarn< "pseudo-destructors on type void are a Microsoft extension">, InGroup; def err_pseudo_dtor_type_mismatch : Error< "the type of object expression " "%diff{($) does not match the type being destroyed ($)|" "does not match the type being destroyed}0,1 " "in pseudo-destructor expression">; def err_pseudo_dtor_call_with_args : Error< "call to pseudo-destructor cannot have any arguments">; def err_dtor_expr_without_call : Error< "reference to %select{destructor|pseudo-destructor}0 must be called" "%select{|; did you mean to call it with no arguments?}1">; def err_pseudo_dtor_destructor_non_type : Error< "%0 does not refer to a type name in pseudo-destructor expression; expected " "the name of type %1">; def err_invalid_use_of_function_type : Error< "a function type is not allowed here">; def err_invalid_use_of_array_type : Error<"an array type is not allowed here">; def err_typecheck_bool_condition : Error< "value of type %0 is not contextually convertible to 'bool'">; def err_typecheck_ambiguous_condition : Error< "conversion %diff{from $ to $|between types}0,1 is ambiguous">; def err_typecheck_nonviable_condition : Error< "no viable conversion%select{%diff{ from $ to $|}1,2|" "%diff{ from returned value of type $ to function return type $|}1,2}0">; def err_typecheck_nonviable_condition_incomplete : Error< "no viable conversion%diff{ from $ to incomplete type $|}0,1">; def err_typecheck_deleted_function : Error< "conversion function %diff{from $ to $|between types}0,1 " "invokes a deleted function">; def err_expected_class_or_namespace : Error<"%0 is not a class" "%select{ or namespace|, namespace, or enumeration}1">; def err_invalid_declarator_scope : Error<"cannot define or redeclare %0 here " "because namespace %1 does not enclose namespace %2">; def err_invalid_declarator_global_scope : Error< "definition or redeclaration of %0 cannot name the global scope">; def err_invalid_declarator_in_function : Error< "definition or redeclaration of %0 not allowed inside a function">; def err_invalid_declarator_in_block : Error< "definition or redeclaration of %0 not allowed inside a block">; def err_not_tag_in_scope : Error< "no %select{struct|interface|union|class|enum}0 named %1 in %2">; def err_no_typeid_with_fno_rtti : Error< "use of typeid requires -frtti">; def err_no_dynamic_cast_with_fno_rtti : Error< "use of dynamic_cast requires -frtti">; def warn_no_dynamic_cast_with_rtti_disabled: Warning< "dynamic_cast will not work since RTTI data is disabled by " "%select{-fno-rtti-data|/GR-}0">, InGroup; def warn_no_typeid_with_rtti_disabled: Warning< "typeid will not work since RTTI data is disabled by " "%select{-fno-rtti-data|/GR-}0">, InGroup; def err_cannot_form_pointer_to_member_of_reference_type : Error< "cannot form a pointer-to-member to member %0 of reference type %1">; def err_incomplete_object_call : Error< "incomplete type in call to object of type %0">; def warn_condition_is_assignment : Warning<"using the result of an " "assignment as a condition without parentheses">, InGroup; def warn_free_nonheap_object : Warning<"attempt to call %0 on non-heap object %1">, InGroup>, DefaultIgnore; // FIXME: add to -Wall after sufficient testing // Completely identical except off by default. def warn_condition_is_idiomatic_assignment : Warning<"using the result " "of an assignment as a condition without parentheses">, InGroup>, DefaultIgnore; def note_condition_assign_to_comparison : Note< "use '==' to turn this assignment into an equality comparison">; def note_condition_or_assign_to_comparison : Note< "use '!=' to turn this compound assignment into an inequality comparison">; def note_condition_assign_silence : Note< "place parentheses around the assignment to silence this warning">; def warn_equality_with_extra_parens : Warning<"equality comparison with " "extraneous parentheses">, InGroup; def note_equality_comparison_to_assign : Note< "use '=' to turn this equality comparison into an assignment">; def note_equality_comparison_silence : Note< "remove extraneous parentheses around the comparison to silence this warning">; // assignment related diagnostics (also for argument passing, returning, etc). // In most of these diagnostics the %2 is a value from the // Sema::AssignmentAction enumeration def err_typecheck_convert_incompatible : Error< "%select{%diff{assigning to $ from incompatible type $|" "assigning to type from incompatible type}0,1" "|%diff{passing $ to parameter of incompatible type $|" "passing type to parameter of incompatible type}0,1" "|%diff{returning $ from a function with incompatible result type $|" "returning type from a function with incompatible result type}0,1" "|%diff{converting $ to incompatible type $|" "converting type to incompatible type}0,1" "|%diff{initializing $ with an expression of incompatible type $|" "initializing type with an expression of incompatible type}0,1" "|%diff{sending $ to parameter of incompatible type $|" "sending type to parameter of incompatible type}0,1" "|%diff{casting $ to incompatible type $|" "casting type to incompatible type}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3" "%select{|: different classes%diff{ ($ vs $)|}5,6" "|: different number of parameters (%5 vs %6)" "|: type mismatch at %ordinal5 parameter%diff{ ($ vs $)|}6,7" "|: different return type%diff{ ($ vs $)|}5,6" "|: different qualifiers (%5 vs %6)" "|: different exception specifications}4">; def err_typecheck_missing_return_type_incompatible : Error< "%diff{return type $ must match previous return type $|" "return type must match previous return type}0,1 when %select{block " "literal|lambda expression}2 has unspecified explicit return type">; def note_incomplete_class_and_qualified_id : Note< "conformance of forward class %0 to protocol %1 can not be confirmed">; def warn_incompatible_qualified_id : Warning< "%select{%diff{assigning to $ from incompatible type $|" "assigning to type from incompatible type}0,1" "|%diff{passing $ to parameter of incompatible type $|" "passing type to parameter of incompatible type}0,1" "|%diff{returning $ from a function with incompatible result type $|" "returning type from a function with incompatible result type}0,1" "|%diff{converting $ to incompatible type $|" "converting type to incompatible type}0,1" "|%diff{initializing $ with an expression of incompatible type $|" "initializing type with an expression of incompatible type}0,1" "|%diff{sending $ to parameter of incompatible type $|" "sending type to parameter of incompatible type}0,1" "|%diff{casting $ to incompatible type $|" "casting type to incompatible type}0,1}2">; def err_incompatible_qualified_id : Error< "%select{%diff{assigning to $ from incompatible type $|" "assigning to type from incompatible type}0,1" "|%diff{passing $ to parameter of incompatible type $|" "passing type to parameter of incompatible type}0,1" "|%diff{returning $ from a function with incompatible result type $|" "returning type from a function with incompatible result type}0,1" "|%diff{converting $ to incompatible type $|" "converting type to incompatible type}0,1" "|%diff{initializing $ with an expression of incompatible type $|" "initializing type with an expression of incompatible type}0,1" "|%diff{sending $ to parameter of incompatible type $|" "sending type to parameter of incompatible type}0,1" "|%diff{casting $ to incompatible type $|" "casting type to incompatible type}0,1}2">; def ext_typecheck_convert_pointer_int : ExtWarn< "incompatible pointer to integer conversion " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3">, InGroup; def err_typecheck_convert_pointer_int : Error< "incompatible pointer to integer conversion " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3">; def ext_typecheck_convert_int_pointer : ExtWarn< "incompatible integer to pointer conversion " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3">, InGroup, SFINAEFailure; def err_typecheck_convert_int_pointer : Error< "incompatible integer to pointer conversion " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3">; def ext_typecheck_convert_pointer_void_func : Extension< "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " converts between void pointer and function pointer">; def err_typecheck_convert_pointer_void_func : Error< "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " converts between void pointer and function pointer">; def ext_typecheck_convert_incompatible_pointer_sign : ExtWarn< "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" - " converts between pointers to integer types with different sign">, + " converts between pointers to integer types %select{with different sign|" + "where one is of the unique plain 'char' type and the other is not}3">, InGroup>; -def err_typecheck_convert_incompatible_pointer_sign : Error< - "%select{%diff{assigning to $ from $|assigning to different types}0,1" - "|%diff{passing $ to parameter of type $|" - "passing to parameter of different type}0,1" - "|%diff{returning $ from a function with result type $|" - "returning from function with different return type}0,1" - "|%diff{converting $ to type $|converting between types}0,1" - "|%diff{initializing $ with an expression of type $|" - "initializing with expression of different type}0,1" - "|%diff{sending $ to parameter of type $|" - "sending to parameter of different type}0,1" - "|%diff{casting $ to type $|casting between types}0,1}2" - " converts between pointers to integer types with different sign">; +def err_typecheck_convert_incompatible_pointer_sign : + Error; def ext_typecheck_convert_incompatible_pointer : ExtWarn< "incompatible pointer types " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3">, InGroup; def err_typecheck_convert_incompatible_pointer : Error< "incompatible pointer types " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3">; def ext_typecheck_convert_incompatible_function_pointer : ExtWarn< "incompatible function pointer types " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3">, InGroup; def err_typecheck_convert_incompatible_function_pointer : Error< "incompatible function pointer types " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" "%select{|; dereference with *|" "; take the address with &|" "; remove *|" "; remove &}3">; def ext_typecheck_convert_discards_qualifiers : ExtWarn< "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " discards qualifiers">, InGroup; def err_typecheck_convert_discards_qualifiers : Error< "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " discards qualifiers">; def ext_nested_pointer_qualifier_mismatch : ExtWarn< "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " discards qualifiers in nested pointer types">, InGroup; def err_nested_pointer_qualifier_mismatch : Error< "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " discards qualifiers in nested pointer types">; def warn_incompatible_vectors : Warning< "incompatible vector types " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2">, InGroup, DefaultIgnore; def err_incompatible_vectors : Error< "incompatible vector types " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2">; def err_int_to_block_pointer : Error< "invalid block pointer conversion " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2">; def err_typecheck_convert_incompatible_block_pointer : Error< "incompatible block pointer types " "%select{%diff{assigning to $ from $|assigning to different types}0,1" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2">; def err_typecheck_incompatible_address_space : Error< "%select{%diff{assigning $ to $|assigning to different types}1,0" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " changes address space of pointer">; def err_typecheck_incompatible_nested_address_space : Error< "%select{%diff{assigning $ to $|assigning to different types}1,0" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " changes address space of nested pointer">; def err_typecheck_incompatible_ownership : Error< "%select{%diff{assigning $ to $|assigning to different types}1,0" "|%diff{passing $ to parameter of type $|" "passing to parameter of different type}0,1" "|%diff{returning $ from a function with result type $|" "returning from function with different return type}0,1" "|%diff{converting $ to type $|converting between types}0,1" "|%diff{initializing $ with an expression of type $|" "initializing with expression of different type}0,1" "|%diff{sending $ to parameter of type $|" "sending to parameter of different type}0,1" "|%diff{casting $ to type $|casting between types}0,1}2" " changes retain/release properties of pointer">; def err_typecheck_comparison_of_distinct_blocks : Error< "comparison of distinct block types%diff{ ($ and $)|}0,1">; def err_typecheck_array_not_modifiable_lvalue : Error< "array type %0 is not assignable">; def err_typecheck_non_object_not_modifiable_lvalue : Error< "non-object type %0 is not assignable">; def err_typecheck_expression_not_modifiable_lvalue : Error< "expression is not assignable">; def err_typecheck_incomplete_type_not_modifiable_lvalue : Error< "incomplete type %0 is not assignable">; def err_typecheck_lvalue_casts_not_supported : Error< "assignment to cast is illegal, lvalue casts are not supported">; def err_typecheck_duplicate_vector_components_not_mlvalue : Error< "vector is not assignable (contains duplicate components)">; def err_block_decl_ref_not_modifiable_lvalue : Error< "variable is not assignable (missing __block type specifier)">; def err_lambda_decl_ref_not_modifiable_lvalue : Error< "cannot assign to a variable captured by copy in a non-mutable lambda">; def err_typecheck_call_not_function : Error< "called object type %0 is not a function or function pointer">; def err_call_incomplete_return : Error< "calling function with incomplete return type %0">; def err_call_function_incomplete_return : Error< "calling %0 with incomplete return type %1">; def err_call_incomplete_argument : Error< "argument type %0 is incomplete">; def err_typecheck_call_too_few_args : Error< "too few %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected %1, have %2">; def err_typecheck_call_too_few_args_one : Error< "too few %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "single argument %1 was not specified">; def err_typecheck_call_too_few_args_at_least : Error< "too few %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected at least %1, have %2">; def err_typecheck_call_too_few_args_at_least_one : Error< "too few %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "at least argument %1 must be specified">; def err_typecheck_call_too_few_args_suggest : Error< "too few %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected %1, have %2; did you mean %3?">; def err_typecheck_call_too_few_args_at_least_suggest : Error< "too few %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected at least %1, have %2; did you mean %3?">; def err_typecheck_call_too_many_args : Error< "too many %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected %1, have %2">; def err_typecheck_call_too_many_args_one : Error< "too many %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected single argument %1, have %2 arguments">; def err_typecheck_call_too_many_args_at_most : Error< "too many %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected at most %1, have %2">; def err_typecheck_call_too_many_args_at_most_one : Error< "too many %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected at most single argument %1, have %2 arguments">; def err_typecheck_call_too_many_args_suggest : Error< "too many %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected %1, have %2; did you mean %3?">; def err_typecheck_call_too_many_args_at_most_suggest : Error< "too many %select{|||execution configuration }0arguments to " "%select{function|block|method|kernel function}0 call, " "expected at most %1, have %2; did you mean %3?">; def err_arc_typecheck_convert_incompatible_pointer : Error< "incompatible pointer types passing retainable parameter of type %0" "to a CF function expecting %1 type">; def err_builtin_fn_use : Error<"builtin functions must be directly called">; def warn_call_wrong_number_of_arguments : Warning< "too %select{few|many}0 arguments in call to %1">; def err_atomic_builtin_must_be_pointer : Error< "address argument to atomic builtin must be a pointer (%0 invalid)">; def err_atomic_builtin_must_be_pointer_intptr : Error< "address argument to atomic builtin must be a pointer to integer or pointer" " (%0 invalid)">; def err_atomic_builtin_cannot_be_const : Error< "address argument to atomic builtin cannot be const-qualified (%0 invalid)">; def err_atomic_builtin_must_be_pointer_intfltptr : Error< "address argument to atomic builtin must be a pointer to integer," " floating-point or pointer (%0 invalid)">; def err_atomic_builtin_pointer_size : Error< "address argument to atomic builtin must be a pointer to 1,2,4,8 or 16 byte " "type (%0 invalid)">; def err_atomic_exclusive_builtin_pointer_size : Error< "address argument to load or store exclusive builtin must be a pointer to" " 1,2,4 or 8 byte type (%0 invalid)">; def err_atomic_builtin_ext_int_size : Error< "Atomic memory operand must have a power-of-two size">; def err_atomic_builtin_ext_int_prohibit : Error< "argument to atomic builtin of type '_ExtInt' is not supported">; def err_atomic_op_needs_atomic : Error< "address argument to atomic operation must be a pointer to _Atomic " "type (%0 invalid)">; def err_atomic_op_needs_non_const_atomic : Error< "address argument to atomic operation must be a pointer to non-%select{const|constant}0 _Atomic " "type (%1 invalid)">; def err_atomic_op_needs_non_const_pointer : Error< "address argument to atomic operation must be a pointer to non-const " "type (%0 invalid)">; def err_atomic_op_needs_trivial_copy : Error< "address argument to atomic operation must be a pointer to a " "trivially-copyable type (%0 invalid)">; def err_atomic_op_needs_atomic_int_or_ptr : Error< "address argument to atomic operation must be a pointer to %select{|atomic }0" "integer or pointer (%1 invalid)">; def err_atomic_op_needs_atomic_int : Error< "address argument to atomic operation must be a pointer to " "%select{|atomic }0integer (%1 invalid)">; def warn_atomic_op_has_invalid_memory_order : Warning< "memory order argument to atomic operation is invalid">, InGroup>; def err_atomic_op_has_invalid_synch_scope : Error< "synchronization scope argument to atomic operation is invalid">; def warn_atomic_implicit_seq_cst : Warning< "implicit use of sequentially-consistent atomic may incur stronger memory barriers than necessary">, InGroup>, DefaultIgnore; def err_overflow_builtin_must_be_int : Error< "operand argument to overflow builtin must be an integer (%0 invalid)">; def err_overflow_builtin_must_be_ptr_int : Error< "result argument to overflow builtin must be a pointer " "to a non-const integer (%0 invalid)">; def err_overflow_builtin_ext_int_max_size : Error< "__builtin_mul_overflow does not support signed _ExtInt operands of more " "than %0 bits">; def err_atomic_load_store_uses_lib : Error< "atomic %select{load|store}0 requires runtime support that is not " "available for this target">; def err_nontemporal_builtin_must_be_pointer : Error< "address argument to nontemporal builtin must be a pointer (%0 invalid)">; def err_nontemporal_builtin_must_be_pointer_intfltptr_or_vector : Error< "address argument to nontemporal builtin must be a pointer to integer, float, " "pointer, or a vector of such types (%0 invalid)">; def err_deleted_function_use : Error<"attempt to use a deleted function">; def err_deleted_inherited_ctor_use : Error< "constructor inherited by %0 from base class %1 is implicitly deleted">; def note_called_by : Note<"called by %0">; def err_kern_type_not_void_return : Error< "kernel function type %0 must have void return type">; def err_kern_is_nonstatic_method : Error< "kernel function %0 must be a free function or static member function">; def err_config_scalar_return : Error< "CUDA special function '%0' must have scalar return type">; def err_kern_call_not_global_function : Error< "kernel call to non-global function %0">; def err_global_call_not_config : Error< "call to global function %0 not configured">; def err_ref_bad_target : Error< "reference to %select{__device__|__global__|__host__|__host__ __device__}0 " "%select{function|variable}1 %2 in %select{__device__|__global__|__host__|__host__ __device__}3 function">; def err_ref_bad_target_global_initializer : Error< "reference to %select{__device__|__global__|__host__|__host__ __device__}0 " "function %1 in global initializer">; def err_capture_bad_target : Error< "capture host variable %0 by reference in device or host device lambda function">; def err_capture_bad_target_this_ptr : Error< "capture host side class data member by this pointer in device or host device lambda function">; def warn_kern_is_method : Extension< "kernel function %0 is a member function; this may not be accepted by nvcc">, InGroup; def warn_kern_is_inline : Warning< "ignored 'inline' attribute on kernel function %0">, InGroup; def err_variadic_device_fn : Error< "CUDA device code does not support variadic functions">; def err_va_arg_in_device : Error< "CUDA device code does not support va_arg">; def err_alias_not_supported_on_nvptx : Error<"CUDA does not support aliases">; def err_cuda_unattributed_constexpr_cannot_overload_device : Error< "constexpr function %0 without __host__ or __device__ attributes cannot " "overload __device__ function with same signature. Add a __host__ " "attribute, or build with -fno-cuda-host-device-constexpr.">; def note_cuda_conflicting_device_function_declared_here : Note< "conflicting __device__ function declared here">; def err_cuda_device_exceptions : Error< "cannot use '%0' in " "%select{__device__|__global__|__host__|__host__ __device__}1 function">; def err_dynamic_var_init : Error< "dynamic initialization is not supported for " "__device__, __constant__, and __shared__ variables.">; def err_shared_var_init : Error< "initialization is not supported for __shared__ variables.">; def err_cuda_vla : Error< "cannot use variable-length arrays in " "%select{__device__|__global__|__host__|__host__ __device__}0 functions">; def err_cuda_extern_shared : Error<"__shared__ variable %0 cannot be 'extern'">; def err_cuda_host_shared : Error< "__shared__ local variables not allowed in " "%select{__device__|__global__|__host__|__host__ __device__}0 functions">; def err_cuda_nonstatic_constdev: Error<"__constant__ and __device__ are not allowed on non-static local variables">; def err_cuda_ovl_target : Error< "%select{__device__|__global__|__host__|__host__ __device__}0 function %1 " "cannot overload %select{__device__|__global__|__host__|__host__ __device__}2 function %3">; def note_cuda_ovl_candidate_target_mismatch : Note< "candidate template ignored: target attributes do not match">; def err_cuda_device_builtin_surftex_cls_template : Error< "illegal device builtin %select{surface|texture}0 reference " "class template %1 declared here">; def note_cuda_device_builtin_surftex_cls_should_have_n_args : Note< "%0 needs to have exactly %1 template parameters">; def note_cuda_device_builtin_surftex_cls_should_have_match_arg : Note< "the %select{1st|2nd|3rd}1 template parameter of %0 needs to be " "%select{a type|an integer or enum value}2">; def err_cuda_device_builtin_surftex_ref_decl : Error< "illegal device builtin %select{surface|texture}0 reference " "type %1 declared here">; def note_cuda_device_builtin_surftex_should_be_template_class : Note< "%0 needs to be instantiated from a class template with proper " "template arguments">; def warn_non_pod_vararg_with_format_string : Warning< "cannot pass %select{non-POD|non-trivial}0 object of type %1 to variadic " "%select{function|block|method|constructor}2; expected type from format " "string was %3">, InGroup, DefaultError; // The arguments to this diagnostic should match the warning above. def err_cannot_pass_objc_interface_to_vararg_format : Error< "cannot pass object with interface type %1 by value to variadic " "%select{function|block|method|constructor}2; expected type from format " "string was %3">; def err_cannot_pass_non_trivial_c_struct_to_vararg : Error< "cannot pass non-trivial C object of type %0 by value to variadic " "%select{function|block|method|constructor}1">; def err_cannot_pass_objc_interface_to_vararg : Error< "cannot pass object with interface type %0 by value through variadic " "%select{function|block|method|constructor}1">; def warn_cannot_pass_non_pod_arg_to_vararg : Warning< "cannot pass object of %select{non-POD|non-trivial}0 type %1 through variadic" " %select{function|block|method|constructor}2; call will abort at runtime">, InGroup, DefaultError; def warn_cxx98_compat_pass_non_pod_arg_to_vararg : Warning< "passing object of trivial but non-POD type %0 through variadic" " %select{function|block|method|constructor}1 is incompatible with C++98">, InGroup, DefaultIgnore; def warn_pass_class_arg_to_vararg : Warning< "passing object of class type %0 through variadic " "%select{function|block|method|constructor}1" "%select{|; did you mean to call '%3'?}2">, InGroup, DefaultIgnore; def err_cannot_pass_to_vararg : Error< "cannot pass %select{expression of type %1|initializer list}0 to variadic " "%select{function|block|method|constructor}2">; def err_cannot_pass_to_vararg_format : Error< "cannot pass %select{expression of type %1|initializer list}0 to variadic " "%select{function|block|method|constructor}2; expected type from format " "string was %3">; def err_typecheck_call_invalid_ordered_compare : Error< "ordered compare requires two args of floating point type" "%diff{ ($ and $)|}0,1">; def err_typecheck_call_invalid_unary_fp : Error< "floating point classification requires argument of floating point type " "(passed in %0)">; def err_typecheck_cond_expect_int_float : Error< "used type %0 where integer or floating point type is required">; def err_typecheck_cond_expect_scalar : Error< "used type %0 where arithmetic or pointer type is required">; def err_typecheck_cond_expect_nonfloat : Error< "used type %0 where floating point type is not allowed">; def ext_typecheck_cond_one_void : Extension< "C99 forbids conditional expressions with only one void side">; def err_typecheck_cast_to_incomplete : Error< "cast to incomplete type %0">; def ext_typecheck_cast_nonscalar : Extension< "C99 forbids casting nonscalar type %0 to the same type">; def ext_typecheck_cast_to_union : Extension< "cast to union type is a GNU extension">, InGroup; def err_typecheck_cast_to_union_no_type : Error< "cast to union type from type %0 not present in union">; def err_cast_pointer_from_non_pointer_int : Error< "operand of type %0 cannot be cast to a pointer type">; def warn_cast_pointer_from_sel : Warning< "cast of type %0 to %1 is deprecated; use sel_getName instead">, InGroup; def warn_function_def_in_objc_container : Warning< "function definition inside an Objective-C container is deprecated">, InGroup; def err_typecheck_call_requires_real_fp : Error< "argument type %0 is not a real floating point type">; def err_typecheck_call_different_arg_types : Error< "arguments are of different types%diff{ ($ vs $)|}0,1">; def warn_cast_calling_conv : Warning< "cast between incompatible calling conventions '%0' and '%1'; " "calls through this pointer may abort at runtime">, InGroup>; def note_change_calling_conv_fixit : Note< "consider defining %0 with the '%1' calling convention">; def warn_bad_function_cast : Warning< "cast from function call of type %0 to non-matching type %1">, InGroup, DefaultIgnore; def err_cast_pointer_to_non_pointer_int : Error< "pointer cannot be cast to type %0">; def err_cast_to_bfloat16 : Error<"cannot type-cast to __bf16">; def err_cast_from_bfloat16 : Error<"cannot type-cast from __bf16">; def err_typecheck_expect_scalar_operand : Error< "operand of type %0 where arithmetic or pointer type is required">; def err_typecheck_cond_incompatible_operands : Error< "incompatible operand types%diff{ ($ and $)|}0,1">; def err_cast_selector_expr : Error< "cannot type cast @selector expression">; def ext_typecheck_cond_incompatible_pointers : ExtWarn< "pointer type mismatch%diff{ ($ and $)|}0,1">, InGroup>; def ext_typecheck_cond_pointer_integer_mismatch : ExtWarn< "pointer/integer type mismatch in conditional expression" "%diff{ ($ and $)|}0,1">, InGroup>; def err_typecheck_choose_expr_requires_constant : Error< "'__builtin_choose_expr' requires a constant expression">; def warn_unused_expr : Warning<"expression result unused">, InGroup; def warn_unused_voidptr : Warning< "expression result unused; should this cast be to 'void'?">, InGroup; def warn_unused_property_expr : Warning< "property access result unused - getters should not be used for side effects">, InGroup; def warn_unused_container_subscript_expr : Warning< "container access result unused - container access should not be used for side effects">, InGroup; def warn_unused_call : Warning< "ignoring return value of function declared with %0 attribute">, InGroup; def warn_unused_constructor : Warning< "ignoring temporary created by a constructor declared with %0 attribute">, InGroup; def warn_unused_constructor_msg : Warning< "ignoring temporary created by a constructor declared with %0 attribute: %1">, InGroup; def warn_side_effects_unevaluated_context : Warning< "expression with side effects has no effect in an unevaluated context">, InGroup; def warn_side_effects_typeid : Warning< "expression with side effects will be evaluated despite being used as an " "operand to 'typeid'">, InGroup; def warn_unused_result : Warning< "ignoring return value of function declared with %0 attribute">, InGroup; def warn_unused_result_msg : Warning< "ignoring return value of function declared with %0 attribute: %1">, InGroup; def warn_unused_volatile : Warning< "expression result unused; assign into a variable to force a volatile load">, InGroup>; def ext_cxx14_attr : Extension< "use of the %0 attribute is a C++14 extension">, InGroup; def ext_cxx17_attr : Extension< "use of the %0 attribute is a C++17 extension">, InGroup; def ext_cxx20_attr : Extension< "use of the %0 attribute is a C++20 extension">, InGroup; def warn_unused_comparison : Warning< "%select{equality|inequality|relational|three-way}0 comparison result unused">, InGroup; def note_inequality_comparison_to_or_assign : Note< "use '|=' to turn this inequality comparison into an or-assignment">; def err_incomplete_type_used_in_type_trait_expr : Error< "incomplete type %0 used in type trait expression">; // C++20 constinit and require_constant_initialization attribute def warn_cxx20_compat_constinit : Warning< "'constinit' specifier is incompatible with C++ standards before C++20">, InGroup, DefaultIgnore; def err_constinit_local_variable : Error< "local variable cannot be declared 'constinit'">; def err_require_constant_init_failed : Error< "variable does not have a constant initializer">; def note_declared_required_constant_init_here : Note< "required by %select{'require_constant_initialization' attribute|" "'constinit' specifier}0 here">; def ext_constinit_missing : ExtWarn< "'constinit' specifier missing on initializing declaration of %0">, InGroup>; def note_constinit_specified_here : Note<"variable declared constinit here">; def err_constinit_added_too_late : Error< "'constinit' specifier added after initialization of variable">; def warn_require_const_init_added_too_late : Warning< "'require_constant_initialization' attribute added after initialization " "of variable">, InGroup; def note_constinit_missing_here : Note< "add the " "%select{'require_constant_initialization' attribute|'constinit' specifier}0 " "to the initializing declaration here">; def err_dimension_expr_not_constant_integer : Error< "dimension expression does not evaluate to a constant unsigned int">; def err_typecheck_cond_incompatible_operands_null : Error< "non-pointer operand type %0 incompatible with %select{NULL|nullptr}1">; def ext_empty_struct_union : Extension< "empty %select{struct|union}0 is a GNU extension">, InGroup; def ext_no_named_members_in_struct_union : Extension< "%select{struct|union}0 without named members is a GNU extension">, InGroup; def warn_zero_size_struct_union_compat : Warning<"%select{|empty }0" "%select{struct|union}1 has size 0 in C, %select{size 1|non-zero size}2 in C++">, InGroup, DefaultIgnore; def warn_zero_size_struct_union_in_extern_c : Warning<"%select{|empty }0" "%select{struct|union}1 has size 0 in C, %select{size 1|non-zero size}2 in C++">, InGroup; def warn_cast_qual : Warning<"cast from %0 to %1 drops %select{const and " "volatile qualifiers|const qualifier|volatile qualifier}2">, InGroup, DefaultIgnore; def warn_cast_qual2 : Warning<"cast from %0 to %1 must have all intermediate " "pointers const qualified to be safe">, InGroup, DefaultIgnore; def warn_redefine_extname_not_applied : Warning< "#pragma redefine_extname is applicable to external C declarations only; " "not applied to %select{function|variable}0 %1">, InGroup; } // End of general sema category. // inline asm. let CategoryName = "Inline Assembly Issue" in { def err_asm_invalid_lvalue_in_output : Error<"invalid lvalue in asm output">; def err_asm_invalid_output_constraint : Error< "invalid output constraint '%0' in asm">; def err_asm_invalid_lvalue_in_input : Error< "invalid lvalue in asm input for constraint '%0'">; def err_asm_invalid_input_constraint : Error< "invalid input constraint '%0' in asm">; def err_asm_tying_incompatible_types : Error< "unsupported inline asm: input with type " "%diff{$ matching output with type $|}0,1">; def err_asm_unexpected_constraint_alternatives : Error< "asm constraint has an unexpected number of alternatives: %0 vs %1">; def err_asm_incomplete_type : Error<"asm operand has incomplete type %0">; def err_asm_unknown_register_name : Error<"unknown register name '%0' in asm">; def err_asm_invalid_global_var_reg : Error<"register '%0' unsuitable for " "global register variables on this target">; def err_asm_register_size_mismatch : Error<"size of register '%0' does not " "match variable size">; def err_asm_bad_register_type : Error<"bad type for named register variable">; def err_asm_invalid_input_size : Error< "invalid input size for constraint '%0'">; def err_asm_invalid_output_size : Error< "invalid output size for constraint '%0'">; def err_invalid_asm_cast_lvalue : Error< "invalid use of a cast in a inline asm context requiring an lvalue: " "remove the cast or build with -fheinous-gnu-extensions">; def err_invalid_asm_value_for_constraint : Error <"value '%0' out of range for constraint '%1'">; def err_asm_non_addr_value_in_memory_constraint : Error < "reference to a %select{bit-field|vector element|global register variable}0" " in asm %select{input|output}1 with a memory constraint '%2'">; def err_asm_input_duplicate_match : Error< "more than one input constraint matches the same output '%0'">; def warn_asm_label_on_auto_decl : Warning< "ignored asm label '%0' on automatic variable">; def warn_invalid_asm_cast_lvalue : Warning< "invalid use of a cast in an inline asm context requiring an lvalue: " "accepted due to -fheinous-gnu-extensions, but clang may remove support " "for this in the future">; def warn_asm_mismatched_size_modifier : Warning< "value size does not match register size specified by the constraint " "and modifier">, InGroup; def note_asm_missing_constraint_modifier : Note< "use constraint modifier \"%0\"">; def note_asm_input_duplicate_first : Note< "constraint '%0' is already present here">; def error_duplicate_asm_operand_name : Error< "duplicate use of asm operand name \"%0\"">; def note_duplicate_asm_operand_name : Note< "asm operand name \"%0\" first referenced here">; } def error_inoutput_conflict_with_clobber : Error< "asm-specifier for input or output variable conflicts with asm" " clobber list">; let CategoryName = "Semantic Issue" in { def err_invalid_conversion_between_vectors : Error< "invalid conversion between vector type%diff{ $ and $|}0,1 of different " "size">; def err_invalid_conversion_between_vector_and_integer : Error< "invalid conversion between vector type %0 and integer type %1 " "of different size">; def err_opencl_function_pointer : Error< "pointers to functions are not allowed">; def err_opencl_taking_address_capture : Error< "taking address of a capture is not allowed">; def err_invalid_conversion_between_vector_and_scalar : Error< "invalid conversion between vector type %0 and scalar type %1">; // C++ member initializers. def err_only_constructors_take_base_inits : Error< "only constructors take base initializers">; def err_multiple_mem_initialization : Error < "multiple initializations given for non-static member %0">; def err_multiple_mem_union_initialization : Error < "initializing multiple members of union">; def err_multiple_base_initialization : Error < "multiple initializations given for base %0">; def err_mem_init_not_member_or_class : Error< "member initializer %0 does not name a non-static data member or base " "class">; def warn_initializer_out_of_order : Warning< "%select{field|base class}0 %1 will be initialized after " "%select{field|base}2 %3">, InGroup, DefaultIgnore; def warn_abstract_vbase_init_ignored : Warning< "initializer for virtual base class %0 of abstract class %1 " "will never be used">, InGroup>, DefaultIgnore; def err_base_init_does_not_name_class : Error< "constructor initializer %0 does not name a class">; def err_base_init_direct_and_virtual : Error< "base class initializer %0 names both a direct base class and an " "inherited virtual base class">; def err_not_direct_base_or_virtual : Error< "type %0 is not a direct or virtual base of %1">; def err_in_class_initializer_non_const : Error< "non-const static data member must be initialized out of line">; def err_in_class_initializer_volatile : Error< "static const volatile data member must be initialized out of line">; def err_in_class_initializer_bad_type : Error< "static data member of type %0 must be initialized out of line">; def ext_in_class_initializer_float_type : ExtWarn< "in-class initializer for static data member of type %0 is a GNU extension">, InGroup; def ext_in_class_initializer_float_type_cxx11 : ExtWarn< "in-class initializer for static data member of type %0 requires " "'constexpr' specifier">, InGroup, DefaultError; def note_in_class_initializer_float_type_cxx11 : Note<"add 'constexpr'">; def err_in_class_initializer_literal_type : Error< "in-class initializer for static data member of type %0 requires " "'constexpr' specifier">; def err_in_class_initializer_non_constant : Error< "in-class initializer for static data member is not a constant expression">; def err_default_member_initializer_not_yet_parsed : Error< "default member initializer for %1 needed within definition of enclosing " "class %0 outside of member functions">; def note_default_member_initializer_not_yet_parsed : Note< "default member initializer declared here">; def err_default_member_initializer_cycle : Error<"default member initializer for %0 uses itself">; def ext_in_class_initializer_non_constant : Extension< "in-class initializer for static data member is not a constant expression; " "folding it to a constant is a GNU extension">, InGroup; def err_thread_dynamic_init : Error< "initializer for thread-local variable must be a constant expression">; def err_thread_nontrivial_dtor : Error< "type of thread-local variable has non-trivial destruction">; def note_use_thread_local : Note< "use 'thread_local' to allow this">; // C++ anonymous unions and GNU anonymous structs/unions def ext_anonymous_union : Extension< "anonymous unions are a C11 extension">, InGroup; def ext_gnu_anonymous_struct : Extension< "anonymous structs are a GNU extension">, InGroup; def ext_c11_anonymous_struct : Extension< "anonymous structs are a C11 extension">, InGroup; def err_anonymous_union_not_static : Error< "anonymous unions at namespace or global scope must be declared 'static'">; def err_anonymous_union_with_storage_spec : Error< "anonymous union at class scope must not have a storage specifier">; def err_anonymous_struct_not_member : Error< "anonymous %select{structs|structs and classes}0 must be " "%select{struct or union|class}0 members">; def err_anonymous_record_member_redecl : Error< "member of anonymous %select{struct|union}0 redeclares %1">; def err_anonymous_record_with_type : Error< "types cannot be declared in an anonymous %select{struct|union}0">; def ext_anonymous_record_with_type : Extension< "types declared in an anonymous %select{struct|union}0 are a Microsoft " "extension">, InGroup; def ext_anonymous_record_with_anonymous_type : Extension< "anonymous types declared in an anonymous %select{struct|union}0 " "are an extension">, InGroup>; def err_anonymous_record_with_function : Error< "functions cannot be declared in an anonymous %select{struct|union}0">; def err_anonymous_record_with_static : Error< "static members cannot be declared in an anonymous %select{struct|union}0">; def err_anonymous_record_bad_member : Error< "anonymous %select{struct|union}0 can only contain non-static data members">; def err_anonymous_record_nonpublic_member : Error< "anonymous %select{struct|union}0 cannot contain a " "%select{private|protected}1 data member">; def ext_ms_anonymous_record : ExtWarn< "anonymous %select{structs|unions}0 are a Microsoft extension">, InGroup; // C++ local classes def err_reference_to_local_in_enclosing_context : Error< "reference to local %select{variable|binding}1 %0 declared in enclosing " "%select{%3|block literal|lambda expression|context}2">; def err_static_data_member_not_allowed_in_local_class : Error< "static data member %0 not allowed in local %sub{select_tag_type_kind}2 %1">; // C++ derived classes def err_base_clause_on_union : Error<"unions cannot have base classes">; def err_base_must_be_class : Error<"base specifier must name a class">; def err_union_as_base_class : Error<"unions cannot be base classes">; def err_circular_inheritance : Error< "circular inheritance between %0 and %1">; def err_base_class_has_flexible_array_member : Error< "base class %0 has a flexible array member">; def err_incomplete_base_class : Error<"base class has incomplete type">; def err_duplicate_base_class : Error< "base class %0 specified more than once as a direct base class">; def warn_inaccessible_base_class : Warning< "direct base %0 is inaccessible due to ambiguity:%1">, InGroup>; // FIXME: better way to display derivation? Pass entire thing into diagclient? def err_ambiguous_derived_to_base_conv : Error< "ambiguous conversion from derived class %0 to base class %1:%2">; def err_ambiguous_memptr_conv : Error< "ambiguous conversion from pointer to member of %select{base|derived}0 " "class %1 to pointer to member of %select{derived|base}0 class %2:%3">; def ext_ms_ambiguous_direct_base : ExtWarn< "accessing inaccessible direct base %0 of %1 is a Microsoft extension">, InGroup; def err_memptr_conv_via_virtual : Error< "conversion from pointer to member of class %0 to pointer to member " "of class %1 via virtual base %2 is not allowed">; // C++ member name lookup def err_ambiguous_member_multiple_subobjects : Error< "non-static member %0 found in multiple base-class subobjects of type %1:%2">; def err_ambiguous_member_multiple_subobject_types : Error< "member %0 found in multiple base classes of different types">; def note_ambiguous_member_found : Note<"member found by ambiguous name lookup">; def note_ambiguous_member_type_found : Note< "member type %0 found by ambiguous name lookup">; def err_ambiguous_reference : Error<"reference to %0 is ambiguous">; def note_ambiguous_candidate : Note<"candidate found by name lookup is %q0">; def err_ambiguous_tag_hiding : Error<"a type named %0 is hidden by a " "declaration in a different namespace">; def note_hidden_tag : Note<"type declaration hidden">; def note_hiding_object : Note<"declaration hides type">; // C++ operator overloading def err_operator_overload_needs_class_or_enum : Error< "overloaded %0 must have at least one parameter of class " "or enumeration type">; def err_operator_overload_variadic : Error<"overloaded %0 cannot be variadic">; def err_operator_overload_static : Error< "overloaded %0 cannot be a static member function">; def err_operator_overload_default_arg : Error< "parameter of overloaded %0 cannot have a default argument">; def err_operator_overload_must_be : Error< "overloaded %0 must be a %select{unary|binary|unary or binary}2 operator " "(has %1 parameter%s1)">; def err_operator_overload_must_be_member : Error< "overloaded %0 must be a non-static member function">; def err_operator_overload_post_incdec_must_be_int : Error< "parameter of overloaded post-%select{increment|decrement}1 operator must " "have type 'int' (not %0)">; // C++ allocation and deallocation functions. def err_operator_new_delete_declared_in_namespace : Error< "%0 cannot be declared inside a namespace">; def err_operator_new_delete_declared_static : Error< "%0 cannot be declared static in global scope">; def ext_operator_new_delete_declared_inline : ExtWarn< "replacement function %0 cannot be declared 'inline'">, InGroup>; def err_operator_new_delete_invalid_result_type : Error< "%0 must return type %1">; def err_operator_new_delete_dependent_result_type : Error< "%0 cannot have a dependent return type; use %1 instead">; def err_operator_new_delete_too_few_parameters : Error< "%0 must have at least one parameter">; def err_operator_new_delete_template_too_few_parameters : Error< "%0 template must have at least two parameters">; def warn_operator_new_returns_null : Warning< "%0 should not return a null pointer unless it is declared 'throw()'" "%select{| or 'noexcept'}1">, InGroup; def err_operator_new_dependent_param_type : Error< "%0 cannot take a dependent type as first parameter; " "use size_t (%1) instead">; def err_operator_new_param_type : Error< "%0 takes type size_t (%1) as first parameter">; def err_operator_new_default_arg: Error< "parameter of %0 cannot have a default argument">; def err_operator_delete_dependent_param_type : Error< "%0 cannot take a dependent type as first parameter; use %1 instead">; def err_operator_delete_param_type : Error< "first parameter of %0 must have type %1">; def err_destroying_operator_delete_not_usual : Error< "destroying operator delete can have only an optional size and optional " "alignment parameter">; def note_implicit_delete_this_in_destructor_here : Note< "while checking implicit 'delete this' for virtual destructor">; def err_builtin_operator_new_delete_not_usual : Error< "call to '%select{__builtin_operator_new|__builtin_operator_delete}0' " "selects non-usual %select{allocation|deallocation}0 function">; def note_non_usual_function_declared_here : Note< "non-usual %0 declared here">; // C++ literal operators def err_literal_operator_outside_namespace : Error< "literal operator %0 must be in a namespace or global scope">; def err_literal_operator_id_outside_namespace : Error< "non-namespace scope '%0' cannot have a literal operator member">; def err_literal_operator_default_argument : Error< "literal operator cannot have a default argument">; def err_literal_operator_bad_param_count : Error< "non-template literal operator must have one or two parameters">; def err_literal_operator_invalid_param : Error< "parameter of literal operator must have type 'unsigned long long', 'long double', 'char', 'wchar_t', 'char16_t', 'char32_t', or 'const char *'">; def err_literal_operator_param : Error< "invalid literal operator parameter type %0, did you mean %1?">; def err_literal_operator_template_with_params : Error< "literal operator template cannot have any parameters">; def err_literal_operator_template : Error< "template parameter list for literal operator must be either 'char...' or 'typename T, T...'">; def err_literal_operator_extern_c : Error< "literal operator must have C++ linkage">; def ext_string_literal_operator_template : ExtWarn< "string literal operator templates are a GNU extension">, InGroup; def warn_user_literal_reserved : Warning< "user-defined literal suffixes not starting with '_' are reserved" "%select{; no literal will invoke this operator|}0">, InGroup; // C++ conversion functions def err_conv_function_not_member : Error< "conversion function must be a non-static member function">; def err_conv_function_return_type : Error< "conversion function cannot have a return type">; def err_conv_function_with_params : Error< "conversion function cannot have any parameters">; def err_conv_function_variadic : Error< "conversion function cannot be variadic">; def err_conv_function_to_array : Error< "conversion function cannot convert to an array type">; def err_conv_function_to_function : Error< "conversion function cannot convert to a function type">; def err_conv_function_with_complex_decl : Error< "cannot specify any part of a return type in the " "declaration of a conversion function" "%select{" "; put the complete type after 'operator'|" "; use a typedef to declare a conversion to %1|" "; use an alias template to declare a conversion to %1|" "}0">; def err_conv_function_redeclared : Error< "conversion function cannot be redeclared">; def warn_conv_to_self_not_used : Warning< "conversion function converting %0 to itself will never be used">, InGroup; def warn_conv_to_base_not_used : Warning< "conversion function converting %0 to its base class %1 will never be used">, InGroup; def warn_conv_to_void_not_used : Warning< "conversion function converting %0 to %1 will never be used">, InGroup; def warn_not_compound_assign : Warning< "use of unary operator that may be intended as compound assignment (%0=)">; // C++11 explicit conversion operators def ext_explicit_conversion_functions : ExtWarn< "explicit conversion functions are a C++11 extension">, InGroup; def warn_cxx98_compat_explicit_conversion_functions : Warning< "explicit conversion functions are incompatible with C++98">, InGroup, DefaultIgnore; // C++11 defaulted functions def err_defaulted_special_member_params : Error< "an explicitly-defaulted %select{|copy |move }0constructor cannot " "have default arguments">; def err_defaulted_special_member_variadic : Error< "an explicitly-defaulted %select{|copy |move }0constructor cannot " "be variadic">; def err_defaulted_special_member_return_type : Error< "explicitly-defaulted %select{copy|move}0 assignment operator must " "return %1">; def err_defaulted_special_member_quals : Error< "an explicitly-defaulted %select{copy|move}0 assignment operator may not " "have 'const'%select{, 'constexpr'|}1 or 'volatile' qualifiers">; def err_defaulted_special_member_volatile_param : Error< "the parameter for an explicitly-defaulted %sub{select_special_member_kind}0 " "may not be volatile">; def err_defaulted_special_member_move_const_param : Error< "the parameter for an explicitly-defaulted move " "%select{constructor|assignment operator}0 may not be const">; def err_defaulted_special_member_copy_const_param : Error< "the parameter for this explicitly-defaulted copy " "%select{constructor|assignment operator}0 is const, but a member or base " "requires it to be non-const">; def err_defaulted_copy_assign_not_ref : Error< "the parameter for an explicitly-defaulted copy assignment operator must be an " "lvalue reference type">; def err_incorrect_defaulted_constexpr : Error< "defaulted definition of %sub{select_special_member_kind}0 " "is not constexpr">; def err_incorrect_defaulted_consteval : Error< "defaulted declaration of %sub{select_special_member_kind}0 " "cannot be consteval because implicit definition is not constexpr">; def warn_defaulted_method_deleted : Warning< "explicitly defaulted %sub{select_special_member_kind}0 is implicitly " "deleted">, InGroup; def err_out_of_line_default_deletes : Error< "defaulting this %sub{select_special_member_kind}0 " "would delete it after its first declaration">; def note_deleted_type_mismatch : Note< "function is implicitly deleted because its declared type does not match " "the type of an implicit %sub{select_special_member_kind}0">; def warn_cxx17_compat_defaulted_method_type_mismatch : Warning< "explicitly defaulting this %sub{select_special_member_kind}0 with a type " "different from the implicit type is incompatible with C++ standards before " "C++20">, InGroup, DefaultIgnore; def warn_vbase_moved_multiple_times : Warning< "defaulted move assignment operator of %0 will move assign virtual base " "class %1 multiple times">, InGroup>; def note_vbase_moved_here : Note< "%select{%1 is a virtual base class of base class %2 declared here|" "virtual base class %1 declared here}0">; // C++20 defaulted comparisons // This corresponds to values of Sema::DefaultedComparisonKind. def select_defaulted_comparison_kind : TextSubstitution< "%select{|equality|three-way|equality|relational}0 comparison " "operator">; def ext_defaulted_comparison : ExtWarn< "defaulted comparison operators are a C++20 extension">, InGroup; def warn_cxx17_compat_defaulted_comparison : Warning< "defaulted comparison operators are incompatible with C++ standards " "before C++20">, InGroup, DefaultIgnore; def err_defaulted_comparison_template : Error< "comparison operator template cannot be defaulted">; def err_defaulted_comparison_out_of_class : Error< "%sub{select_defaulted_comparison_kind}0 can only be defaulted in a class " "definition">; def err_defaulted_comparison_param : Error< "invalid parameter type for defaulted %sub{select_defaulted_comparison_kind}0" "; found %1, expected %2%select{| or %4}3">; def err_defaulted_comparison_param_mismatch : Error< "parameters for defaulted %sub{select_defaulted_comparison_kind}0 " "must have the same type%diff{ (found $ vs $)|}1,2">; def err_defaulted_comparison_non_const : Error< "defaulted member %sub{select_defaulted_comparison_kind}0 must be " "const-qualified">; def err_defaulted_comparison_return_type_not_bool : Error< "return type for defaulted %sub{select_defaulted_comparison_kind}0 " "must be 'bool', not %1">; def err_defaulted_comparison_deduced_return_type_not_auto : Error< "deduced return type for defaulted %sub{select_defaulted_comparison_kind}0 " "must be 'auto', not %1">; def warn_defaulted_comparison_deleted : Warning< "explicitly defaulted %sub{select_defaulted_comparison_kind}0 is implicitly " "deleted">, InGroup; def err_non_first_default_compare_deletes : Error< "defaulting %select{this %sub{select_defaulted_comparison_kind}1|" "the corresponding implicit 'operator==' for this defaulted 'operator<=>'}0 " "would delete it after its first declaration">; def note_defaulted_comparison_union : Note< "defaulted %0 is implicitly deleted because " "%2 is a %select{union-like class|union}1 with variant members">; def note_defaulted_comparison_reference_member : Note< "defaulted %0 is implicitly deleted because " "class %1 has a reference member">; def note_defaulted_comparison_ambiguous : Note< "defaulted %0 is implicitly deleted because implied %select{|'==' |'<' }1" "comparison %select{|for member %3 |for base class %3 }2is ambiguous">; def note_defaulted_comparison_inaccessible : Note< "defaulted %0 is implicitly deleted because it would invoke a " "%select{private|protected}3 %4%select{ member of %6|" " member of %6 to compare member %2| to compare base class %2}1">; def note_defaulted_comparison_calls_deleted : Note< "defaulted %0 is implicitly deleted because it would invoke a deleted " "comparison function%select{| for member %2| for base class %2}1">; def note_defaulted_comparison_no_viable_function : Note< "defaulted %0 is implicitly deleted because there is no viable comparison " "function%select{| for member %2| for base class %2}1">; def note_defaulted_comparison_no_viable_function_synthesized : Note< "three-way comparison cannot be synthesized because there is no viable " "function for %select{'=='|'<'}0 comparison">; def note_defaulted_comparison_not_rewritten_callee : Note< "defaulted %0 is implicitly deleted because this non-rewritten comparison " "function would be the best match for the comparison">; def note_defaulted_comparison_cannot_deduce : Note< "return type of defaulted 'operator<=>' cannot be deduced because " "return type %2 of three-way comparison for %select{|member|base class}0 %1 " "is not a standard comparison category type">; def err_defaulted_comparison_cannot_deduce_undeduced_auto : Error< "return type of defaulted 'operator<=>' cannot be deduced because " "three-way comparison for %select{|member|base class}0 %1 " "has a deduced return type and is not yet defined">; def note_defaulted_comparison_cannot_deduce_undeduced_auto : Note< "%select{|member|base class}0 %1 declared here">; def note_defaulted_comparison_cannot_deduce_callee : Note< "selected 'operator<=>' for %select{|member|base class}0 %1 declared here">; def err_incorrect_defaulted_comparison_constexpr : Error< "defaulted definition of %select{%sub{select_defaulted_comparison_kind}1|" "three-way comparison operator}0 " "cannot be declared %select{constexpr|consteval}2 because " "%select{it|the corresponding implicit 'operator=='}0 " "invokes a non-constexpr comparison function">; def note_defaulted_comparison_not_constexpr : Note< "non-constexpr comparison function would be used to compare " "%select{|member %1|base class %1}0">; def note_defaulted_comparison_not_constexpr_here : Note< "non-constexpr comparison function declared here">; def note_in_declaration_of_implicit_equality_comparison : Note< "while declaring the corresponding implicit 'operator==' " "for this defaulted 'operator<=>'">; def ext_implicit_exception_spec_mismatch : ExtWarn< "function previously declared with an %select{explicit|implicit}0 exception " "specification redeclared with an %select{implicit|explicit}0 exception " "specification">, InGroup>; def warn_ptr_arith_precedes_bounds : Warning< "the pointer decremented by %0 refers before the beginning of the array">, InGroup, DefaultIgnore; def warn_ptr_arith_exceeds_bounds : Warning< "the pointer incremented by %0 refers past the end of the array (that " "contains %1 element%s2)">, InGroup, DefaultIgnore; def warn_array_index_precedes_bounds : Warning< "array index %0 is before the beginning of the array">, InGroup; def warn_array_index_exceeds_bounds : Warning< "array index %0 is past the end of the array (which contains %1 " "element%s2)">, InGroup; def note_array_declared_here : Note< "array %0 declared here">; def warn_printf_insufficient_data_args : Warning< "more '%%' conversions than data arguments">, InGroup; def warn_printf_data_arg_not_used : Warning< "data argument not used by format string">, InGroup; def warn_format_invalid_conversion : Warning< "invalid conversion specifier '%0'">, InGroup; def warn_printf_incomplete_specifier : Warning< "incomplete format specifier">, InGroup; def warn_missing_format_string : Warning< "format string missing">, InGroup; def warn_scanf_nonzero_width : Warning< "zero field width in scanf format string is unused">, InGroup; def warn_format_conversion_argument_type_mismatch : Warning< "format specifies type %0 but the argument has " "%select{type|underlying type}2 %1">, InGroup; def warn_format_conversion_argument_type_mismatch_pedantic : Extension< warn_format_conversion_argument_type_mismatch.Text>, InGroup; def warn_format_conversion_argument_type_mismatch_confusion : Warning< warn_format_conversion_argument_type_mismatch.Text>, InGroup, DefaultIgnore; def warn_format_argument_needs_cast : Warning< "%select{values of type|enum values with underlying type}2 '%0' should not " "be used as format arguments; add an explicit cast to %1 instead">, InGroup; def warn_format_argument_needs_cast_pedantic : Warning< warn_format_argument_needs_cast.Text>, InGroup, DefaultIgnore; def warn_printf_positional_arg_exceeds_data_args : Warning < "data argument position '%0' exceeds the number of data arguments (%1)">, InGroup; def warn_format_zero_positional_specifier : Warning< "position arguments in format strings start counting at 1 (not 0)">, InGroup; def warn_format_invalid_positional_specifier : Warning< "invalid position specified for %select{field width|field precision}0">, InGroup; def warn_format_mix_positional_nonpositional_args : Warning< "cannot mix positional and non-positional arguments in format string">, InGroup; def warn_static_array_too_small : Warning< "array argument is too small; %select{contains %0 elements|is of size %0}2," " callee requires at least %1">, InGroup; def note_callee_static_array : Note< "callee declares array parameter as static here">; def warn_empty_format_string : Warning< "format string is empty">, InGroup; def warn_format_string_is_wide_literal : Warning< "format string should not be a wide string">, InGroup; def warn_printf_format_string_contains_null_char : Warning< "format string contains '\\0' within the string body">, InGroup; def warn_printf_format_string_not_null_terminated : Warning< "format string is not null-terminated">, InGroup; def warn_printf_asterisk_missing_arg : Warning< "'%select{*|.*}0' specified field %select{width|precision}0 is missing a matching 'int' argument">, InGroup; def warn_printf_asterisk_wrong_type : Warning< "field %select{width|precision}0 should have type %1, but argument has type %2">, InGroup; def warn_printf_nonsensical_optional_amount: Warning< "%select{field width|precision}0 used with '%1' conversion specifier, resulting in undefined behavior">, InGroup; def warn_printf_nonsensical_flag: Warning< "flag '%0' results in undefined behavior with '%1' conversion specifier">, InGroup; def warn_format_nonsensical_length: Warning< "length modifier '%0' results in undefined behavior or no effect with '%1' conversion specifier">, InGroup; def warn_format_non_standard_positional_arg: Warning< "positional arguments are not supported by ISO C">, InGroup, DefaultIgnore; def warn_format_non_standard: Warning< "'%0' %select{length modifier|conversion specifier}1 is not supported by ISO C">, InGroup, DefaultIgnore; def warn_format_non_standard_conversion_spec: Warning< "using length modifier '%0' with conversion specifier '%1' is not supported by ISO C">, InGroup, DefaultIgnore; def err_invalid_mask_type_size : Error< "mask type size must be between 1-byte and 8-bytes">; def warn_format_invalid_annotation : Warning< "using '%0' format specifier annotation outside of os_log()/os_trace()">, InGroup; def warn_format_P_no_precision : Warning< "using '%%P' format specifier without precision">, InGroup; def warn_printf_ignored_flag: Warning< "flag '%0' is ignored when flag '%1' is present">, InGroup; def warn_printf_empty_objc_flag: Warning< "missing object format flag">, InGroup; def warn_printf_ObjCflags_without_ObjCConversion: Warning< "object format flags cannot be used with '%0' conversion specifier">, InGroup; def warn_printf_invalid_objc_flag: Warning< "'%0' is not a valid object format flag">, InGroup; def warn_scanf_scanlist_incomplete : Warning< "no closing ']' for '%%[' in scanf format string">, InGroup; def warn_format_bool_as_character : Warning< "using '%0' format specifier, but argument has boolean value">, InGroup; def note_format_string_defined : Note<"format string is defined here">; def note_format_fix_specifier : Note<"did you mean to use '%0'?">; def note_printf_c_str: Note<"did you mean to call the %0 method?">; def note_format_security_fixit: Note< "treat the string as an argument to avoid this">; def warn_null_arg : Warning< "null passed to a callee that requires a non-null argument">, InGroup; def warn_null_ret : Warning< "null returned from %select{function|method}0 that requires a non-null return value">, InGroup; def err_lifetimebound_no_object_param : Error< "'lifetimebound' attribute cannot be applied; %select{static |non-}0member " "function has no implicit object parameter">; def err_lifetimebound_ctor_dtor : Error< "'lifetimebound' attribute cannot be applied to a " "%select{constructor|destructor}0">; // CHECK: returning address/reference of stack memory def warn_ret_stack_addr_ref : Warning< "%select{address of|reference to}0 stack memory associated with " "%select{local variable|parameter}2 %1 returned">, InGroup; def warn_ret_local_temp_addr_ref : Warning< "returning %select{address of|reference to}0 local temporary object">, InGroup; def warn_ret_addr_label : Warning< "returning address of label, which is local">, InGroup; def err_ret_local_block : Error< "returning block that lives on the local stack">; def note_local_var_initializer : Note< "%select{via initialization of|binding reference}0 variable " "%select{%2 |}1here">; def note_lambda_capture_initializer : Note< "%select{implicitly |}2captured%select{| by reference}3" "%select{%select{ due to use|}2 here|" " via initialization of lambda capture %0}1">; def note_init_with_default_member_initalizer : Note< "initializing field %0 with default member initializer">; // Check for initializing a member variable with the address or a reference to // a constructor parameter. def warn_bind_ref_member_to_parameter : Warning< "binding reference member %0 to stack allocated " "%select{variable|parameter}2 %1">, InGroup; def warn_init_ptr_member_to_parameter_addr : Warning< "initializing pointer member %0 with the stack address of " "%select{variable|parameter}2 %1">, InGroup; def note_ref_or_ptr_member_declared_here : Note< "%select{reference|pointer}0 member declared here">; def err_dangling_member : Error< "%select{reference|backing array for 'std::initializer_list'}2 " "%select{|subobject of }1member %0 " "%select{binds to|is}2 a temporary object " "whose lifetime would be shorter than the lifetime of " "the constructed object">; def warn_dangling_member : Warning< "%select{reference|backing array for 'std::initializer_list'}2 " "%select{|subobject of }1member %0 " "%select{binds to|is}2 a temporary object " "whose lifetime is shorter than the lifetime of the constructed object">, InGroup; def warn_dangling_lifetime_pointer_member : Warning< "initializing pointer member %0 to point to a temporary object " "whose lifetime is shorter than the lifetime of the constructed object">, InGroup; def note_lifetime_extending_member_declared_here : Note< "%select{%select{reference|'std::initializer_list'}0 member|" "member with %select{reference|'std::initializer_list'}0 subobject}1 " "declared here">; def warn_dangling_variable : Warning< "%select{temporary %select{whose address is used as value of|" "%select{|implicitly }2bound to}4 " "%select{%select{|reference }4member of local variable|" "local %select{variable|reference}4}1|" "array backing " "%select{initializer list subobject of local variable|" "local initializer list}1}0 " "%select{%3 |}2will be destroyed at the end of the full-expression">, InGroup; def warn_new_dangling_reference : Warning< "temporary bound to reference member of allocated object " "will be destroyed at the end of the full-expression">, InGroup; def warn_dangling_lifetime_pointer : Warning< "object backing the pointer " "will be destroyed at the end of the full-expression">, InGroup; def warn_new_dangling_initializer_list : Warning< "array backing " "%select{initializer list subobject of the allocated object|" "the allocated initializer list}0 " "will be destroyed at the end of the full-expression">, InGroup; def warn_unsupported_lifetime_extension : Warning< "sorry, lifetime extension of " "%select{temporary|backing array of initializer list}0 created " "by aggregate initialization using default member initializer " "is not supported; lifetime of %select{temporary|backing array}0 " "will end at the end of the full-expression">, InGroup; // For non-floating point, expressions of the form x == x or x != x // should result in a warning, since these always evaluate to a constant. // Array comparisons have similar warnings def warn_comparison_always : Warning< "%select{self-|array }0comparison always evaluates to " "%select{a constant|true|false|'std::strong_ordering::equal'}1">, InGroup; def warn_comparison_bitwise_always : Warning< "bitwise comparison always evaluates to %select{false|true}0">, InGroup, DefaultIgnore; def warn_comparison_bitwise_or : Warning< "bitwise or with non-zero value always evaluates to true">, InGroup, DefaultIgnore; def warn_tautological_overlap_comparison : Warning< "overlapping comparisons always evaluate to %select{false|true}0">, InGroup, DefaultIgnore; def warn_depr_array_comparison : Warning< "comparison between two arrays is deprecated; " "to compare array addresses, use unary '+' to decay operands to pointers">, InGroup; def warn_stringcompare : Warning< "result of comparison against %select{a string literal|@encode}0 is " "unspecified (use an explicit string comparison function instead)">, InGroup; def warn_identity_field_assign : Warning< "assigning %select{field|instance variable}0 to itself">, InGroup; // Type safety attributes def err_type_tag_for_datatype_not_ice : Error< "'type_tag_for_datatype' attribute requires the initializer to be " "an %select{integer|integral}0 constant expression">; def err_type_tag_for_datatype_too_large : Error< "'type_tag_for_datatype' attribute requires the initializer to be " "an %select{integer|integral}0 constant expression " "that can be represented by a 64 bit integer">; def err_tag_index_out_of_range : Error< "%select{type tag|argument}0 index %1 is greater than the number of arguments specified">; def warn_type_tag_for_datatype_wrong_kind : Warning< "this type tag was not designed to be used with this function">, InGroup; def warn_type_safety_type_mismatch : Warning< "argument type %0 doesn't match specified %1 type tag " "%select{that requires %3|}2">, InGroup; def warn_type_safety_null_pointer_required : Warning< "specified %0 type tag requires a null pointer">, InGroup; // Generic selections. def err_assoc_type_incomplete : Error< "type %0 in generic association incomplete">; def err_assoc_type_nonobject : Error< "type %0 in generic association not an object type">; def err_assoc_type_variably_modified : Error< "type %0 in generic association is a variably modified type">; def err_assoc_compatible_types : Error< "type %0 in generic association compatible with previously specified type %1">; def note_compat_assoc : Note< "compatible type %0 specified here">; def err_generic_sel_no_match : Error< "controlling expression type %0 not compatible with any generic association type">; def err_generic_sel_multi_match : Error< "controlling expression type %0 compatible with %1 generic association types">; // Blocks def err_blocks_disable : Error<"blocks support disabled - compile with -fblocks" " or %select{pick a deployment target that supports them|for OpenCL 2.0}0">; def err_block_returning_array_function : Error< "block cannot return %select{array|function}0 type %1">; // Builtin annotation def err_builtin_annotation_first_arg : Error< "first argument to __builtin_annotation must be an integer">; def err_builtin_annotation_second_arg : Error< "second argument to __builtin_annotation must be a non-wide string constant">; def err_msvc_annotation_wide_str : Error< "arguments to __annotation must be wide string constants">; // CFString checking def err_cfstring_literal_not_string_constant : Error< "CFString literal is not a string constant">; def warn_cfstring_truncated : Warning< "input conversion stopped due to an input byte that does not " "belong to the input codeset UTF-8">, InGroup>; // os_log checking // TODO: separate diagnostic for os_trace() def err_os_log_format_not_string_constant : Error< "os_log() format argument is not a string constant">; def err_os_log_argument_too_big : Error< "os_log() argument %0 is too big (%1 bytes, max %2)">; def warn_os_log_format_narg : Error< "os_log() '%%n' format specifier is not allowed">, DefaultError; // Statements. def err_continue_not_in_loop : Error< "'continue' statement not in loop statement">; def err_break_not_in_loop_or_switch : Error< "'break' statement not in loop or switch statement">; def warn_loop_ctrl_binds_to_inner : Warning< "'%0' is bound to current loop, GCC binds it to the enclosing loop">, InGroup; def warn_break_binds_to_switch : Warning< "'break' is bound to loop, GCC binds it to switch">, InGroup; def err_default_not_in_switch : Error< "'default' statement not in switch statement">; def err_case_not_in_switch : Error<"'case' statement not in switch statement">; def warn_bool_switch_condition : Warning< "switch condition has boolean value">, InGroup; def warn_case_value_overflow : Warning< "overflow converting case value to switch condition type (%0 to %1)">, InGroup; def err_duplicate_case : Error<"duplicate case value '%0'">; def err_duplicate_case_differing_expr : Error< "duplicate case value: '%0' and '%1' both equal '%2'">; def warn_case_empty_range : Warning<"empty case range specified">; def warn_missing_case_for_condition : Warning<"no case matching constant switch condition '%0'">; def warn_def_missing_case : Warning<"%plural{" "1:enumeration value %1 not explicitly handled in switch|" "2:enumeration values %1 and %2 not explicitly handled in switch|" "3:enumeration values %1, %2, and %3 not explicitly handled in switch|" ":%0 enumeration values not explicitly handled in switch: %1, %2, %3...}0">, InGroup, DefaultIgnore; def warn_missing_case : Warning<"%plural{" "1:enumeration value %1 not handled in switch|" "2:enumeration values %1 and %2 not handled in switch|" "3:enumeration values %1, %2, and %3 not handled in switch|" ":%0 enumeration values not handled in switch: %1, %2, %3...}0">, InGroup; def warn_unannotated_fallthrough : Warning< "unannotated fall-through between switch labels">, InGroup, DefaultIgnore; def warn_unannotated_fallthrough_per_function : Warning< "unannotated fall-through between switch labels in partly-annotated " "function">, InGroup, DefaultIgnore; def note_insert_fallthrough_fixit : Note< "insert '%0;' to silence this warning">; def note_insert_break_fixit : Note< "insert 'break;' to avoid fall-through">; def err_fallthrough_attr_wrong_target : Error< "%0 attribute is only allowed on empty statements">; def note_fallthrough_insert_semi_fixit : Note<"did you forget ';'?">; def err_fallthrough_attr_outside_switch : Error< "fallthrough annotation is outside switch statement">; def err_fallthrough_attr_invalid_placement : Error< "fallthrough annotation does not directly precede switch label">; def warn_fallthrough_attr_unreachable : Warning< "fallthrough annotation in unreachable code">, InGroup, DefaultIgnore; def warn_unreachable_default : Warning< "default label in switch which covers all enumeration values">, InGroup, DefaultIgnore; def warn_not_in_enum : Warning<"case value not in enumerated type %0">, InGroup; def warn_not_in_enum_assignment : Warning<"integer constant not in range " "of enumerated type %0">, InGroup>, DefaultIgnore; def err_typecheck_statement_requires_scalar : Error< "statement requires expression of scalar type (%0 invalid)">; def err_typecheck_statement_requires_integer : Error< "statement requires expression of integer type (%0 invalid)">; def err_multiple_default_labels_defined : Error< "multiple default labels in one switch">; def err_switch_multiple_conversions : Error< "multiple conversions from switch condition type %0 to an integral or " "enumeration type">; def note_switch_conversion : Note< "conversion to %select{integral|enumeration}0 type %1">; def err_switch_explicit_conversion : Error< "switch condition type %0 requires explicit conversion to %1">; def err_switch_incomplete_class_type : Error< "switch condition has incomplete class type %0">; def warn_empty_if_body : Warning< "if statement has empty body">, InGroup; def warn_empty_for_body : Warning< "for loop has empty body">, InGroup; def warn_empty_range_based_for_body : Warning< "range-based for loop has empty body">, InGroup; def warn_empty_while_body : Warning< "while loop has empty body">, InGroup; def warn_empty_switch_body : Warning< "switch statement has empty body">, InGroup; def note_empty_body_on_separate_line : Note< "put the semicolon on a separate line to silence this warning">; def err_va_start_captured_stmt : Error< "'va_start' cannot be used in a captured statement">; def err_va_start_outside_function : Error< "'va_start' cannot be used outside a function">; def err_va_start_fixed_function : Error< "'va_start' used in function with fixed args">; def err_va_start_used_in_wrong_abi_function : Error< "'va_start' used in %select{System V|Win64}0 ABI function">; def err_ms_va_start_used_in_sysv_function : Error< "'__builtin_ms_va_start' used in System V ABI function">; def warn_second_arg_of_va_start_not_last_named_param : Warning< "second argument to 'va_start' is not the last named parameter">, InGroup; def warn_va_start_type_is_undefined : Warning< "passing %select{an object that undergoes default argument promotion|" "an object of reference type|a parameter declared with the 'register' " "keyword}0 to 'va_start' has undefined behavior">, InGroup; def err_first_argument_to_va_arg_not_of_type_va_list : Error< "first argument to 'va_arg' is of type %0 and not 'va_list'">; def err_second_parameter_to_va_arg_incomplete: Error< "second argument to 'va_arg' is of incomplete type %0">; def err_second_parameter_to_va_arg_abstract: Error< "second argument to 'va_arg' is of abstract type %0">; def warn_second_parameter_to_va_arg_not_pod : Warning< "second argument to 'va_arg' is of non-POD type %0">, InGroup, DefaultError; def warn_second_parameter_to_va_arg_ownership_qualified : Warning< "second argument to 'va_arg' is of ARC ownership-qualified type %0">, InGroup, DefaultError; def warn_second_parameter_to_va_arg_never_compatible : Warning< "second argument to 'va_arg' is of promotable type %0; this va_arg has " "undefined behavior because arguments will be promoted to %1">, InGroup; def warn_return_missing_expr : Warning< "non-void %select{function|method}1 %0 should return a value">, DefaultError, InGroup; def ext_return_missing_expr : ExtWarn< "non-void %select{function|method}1 %0 should return a value">, DefaultError, InGroup; def ext_return_has_expr : ExtWarn< "%select{void function|void method|constructor|destructor}1 %0 " "should not return a value">, DefaultError, InGroup; def ext_return_has_void_expr : Extension< "void %select{function|method|block}1 %0 should not return void expression">; def err_return_init_list : Error< "%select{void function|void method|constructor|destructor}1 %0 " "must not return a value">; def err_ctor_dtor_returns_void : Error< "%select{constructor|destructor}1 %0 must not return void expression">; def warn_noreturn_function_has_return_expr : Warning< "function %0 declared 'noreturn' should not return">, InGroup; def warn_falloff_noreturn_function : Warning< "function declared 'noreturn' should not return">, InGroup; def err_noreturn_block_has_return_expr : Error< "block declared 'noreturn' should not return">; def err_noreturn_missing_on_first_decl : Error< "function declared '[[noreturn]]' after its first declaration">; def note_noreturn_missing_first_decl : Note< "declaration missing '[[noreturn]]' attribute is here">; def err_carries_dependency_missing_on_first_decl : Error< "%select{function|parameter}0 declared '[[carries_dependency]]' " "after its first declaration">; def note_carries_dependency_missing_first_decl : Note< "declaration missing '[[carries_dependency]]' attribute is here">; def err_carries_dependency_param_not_function_decl : Error< "'[[carries_dependency]]' attribute only allowed on parameter in a function " "declaration or lambda">; def err_block_on_nonlocal : Error< "__block attribute not allowed, only allowed on local variables">; def err_block_on_vm : Error< "__block attribute not allowed on declaration with a variably modified type">; def err_sizeless_nonlocal : Error< "non-local variable with sizeless type %0">; def err_vec_builtin_non_vector : Error< "first two arguments to %0 must be vectors">; def err_vec_builtin_incompatible_vector : Error< "first two arguments to %0 must have the same type">; def err_vsx_builtin_nonconstant_argument : Error< "argument %0 to %1 must be a 2-bit unsigned literal (i.e. 0, 1, 2 or 3)">; def err_shufflevector_nonconstant_argument : Error< "index for __builtin_shufflevector must be a constant integer">; def err_shufflevector_argument_too_large : Error< "index for __builtin_shufflevector must be less than the total number " "of vector elements">; def err_convertvector_non_vector : Error< "first argument to __builtin_convertvector must be a vector">; def err_convertvector_non_vector_type : Error< "second argument to __builtin_convertvector must be a vector type">; def err_convertvector_incompatible_vector : Error< "first two arguments to __builtin_convertvector must have the same number of elements">; def err_first_argument_to_cwsc_not_call : Error< "first argument to __builtin_call_with_static_chain must be a non-member call expression">; def err_first_argument_to_cwsc_block_call : Error< "first argument to __builtin_call_with_static_chain must not be a block call">; def err_first_argument_to_cwsc_builtin_call : Error< "first argument to __builtin_call_with_static_chain must not be a builtin call">; def err_first_argument_to_cwsc_pdtor_call : Error< "first argument to __builtin_call_with_static_chain must not be a pseudo-destructor call">; def err_second_argument_to_cwsc_not_pointer : Error< "second argument to __builtin_call_with_static_chain must be of pointer type">; def err_vector_incorrect_num_initializers : Error< "%select{too many|too few}0 elements in vector initialization (expected %1 elements, have %2)">; def err_altivec_empty_initializer : Error<"expected initializer">; def err_invalid_neon_type_code : Error< "incompatible constant for this __builtin_neon function">; def err_argument_invalid_range : Error< "argument value %0 is outside the valid range [%1, %2]">; def warn_argument_invalid_range : Warning< "argument value %0 is outside the valid range [%1, %2]">, DefaultError, InGroup>; def err_argument_not_multiple : Error< "argument should be a multiple of %0">; def err_argument_not_power_of_2 : Error< "argument should be a power of 2">; def err_argument_not_shifted_byte : Error< "argument should be an 8-bit value shifted by a multiple of 8 bits">; def err_argument_not_shifted_byte_or_xxff : Error< "argument should be an 8-bit value shifted by a multiple of 8 bits, or in the form 0x??FF">; def err_rotation_argument_to_cadd : Error<"argument should be the value 90 or 270">; def err_rotation_argument_to_cmla : Error<"argument should be the value 0, 90, 180 or 270">; def warn_neon_vector_initializer_non_portable : Warning< "vector initializers are not compatible with NEON intrinsics in big endian " "mode">, InGroup>; def note_neon_vector_initializer_non_portable : Note< "consider using vld1_%0%1() to initialize a vector from memory, or " "vcreate_%0%1() to initialize from an integer constant">; def note_neon_vector_initializer_non_portable_q : Note< "consider using vld1q_%0%1() to initialize a vector from memory, or " "vcombine_%0%1(vcreate_%0%1(), vcreate_%0%1()) to initialize from integer " "constants">; def err_systemz_invalid_tabort_code : Error< "invalid transaction abort code">; def err_64_bit_builtin_32_bit_tgt : Error< "this builtin is only available on 64-bit targets">; def err_32_bit_builtin_64_bit_tgt : Error< "this builtin is only available on 32-bit targets">; def err_builtin_x64_aarch64_only : Error< "this builtin is only available on x86-64 and aarch64 targets">; def err_mips_builtin_requires_dsp : Error< "this builtin requires 'dsp' ASE, please use -mdsp">; def err_mips_builtin_requires_dspr2 : Error< "this builtin requires 'dsp r2' ASE, please use -mdspr2">; def err_mips_builtin_requires_msa : Error< "this builtin requires 'msa' ASE, please use -mmsa">; def err_ppc_builtin_only_on_pwr7 : Error< "this builtin is only valid on POWER7 or later CPUs">; def err_ppc_invalid_use_mma_type : Error< "invalid use of PPC MMA type">; def err_x86_builtin_invalid_rounding : Error< "invalid rounding argument">; def err_x86_builtin_invalid_scale : Error< "scale argument must be 1, 2, 4, or 8">; def err_x86_builtin_tile_arg_duplicate : Error< "tile arguments must refer to different tiles">; def err_builtin_target_unsupported : Error< "builtin is not supported on this target">; def err_builtin_longjmp_unsupported : Error< "__builtin_longjmp is not supported for the current target">; def err_builtin_setjmp_unsupported : Error< "__builtin_setjmp is not supported for the current target">; def err_builtin_longjmp_invalid_val : Error< "argument to __builtin_longjmp must be a constant 1">; def err_builtin_requires_language : Error<"'%0' is only available in %1">; def err_constant_integer_arg_type : Error< "argument to %0 must be a constant integer">; def ext_mixed_decls_code : Extension< "ISO C90 forbids mixing declarations and code">, InGroup>; def err_non_local_variable_decl_in_for : Error< "declaration of non-local variable in 'for' loop">; def err_non_variable_decl_in_for : Error< "non-variable declaration in 'for' loop">; def err_toomany_element_decls : Error< "only one element declaration is allowed">; def err_selector_element_not_lvalue : Error< "selector element is not a valid lvalue">; def err_selector_element_type : Error< "selector element type %0 is not a valid object">; def err_selector_element_const_type : Error< "selector element of type %0 cannot be a constant lvalue expression">; def err_collection_expr_type : Error< "the type %0 is not a pointer to a fast-enumerable object">; def warn_collection_expr_type : Warning< "collection expression type %0 may not respond to %1">; def err_invalid_conversion_between_ext_vectors : Error< "invalid conversion between ext-vector type %0 and %1">; def warn_duplicate_attribute_exact : Warning< "attribute %0 is already applied">, InGroup; def warn_duplicate_attribute : Warning< "attribute %0 is already applied with different parameters">, InGroup; def warn_sync_fetch_and_nand_semantics_change : Warning< "the semantics of this intrinsic changed with GCC " "version 4.4 - the newer semantics are provided here">, InGroup>; // Type def ext_wchar_t_sign_spec : ExtWarn<"'%0' cannot be signed or unsigned">, InGroup>, DefaultError; def warn_receiver_forward_class : Warning< "receiver %0 is a forward class and corresponding @interface may not exist">, InGroup; def note_method_sent_forward_class : Note<"method %0 is used for the forward class">; def ext_missing_declspec : ExtWarn< "declaration specifier missing, defaulting to 'int'">; def ext_missing_type_specifier : ExtWarn< "type specifier missing, defaults to 'int'">, InGroup; def err_decimal_unsupported : Error< "GNU decimal type extension not supported">; def err_missing_type_specifier : Error< "C++ requires a type specifier for all declarations">; def err_objc_array_of_interfaces : Error< "array of interface %0 is invalid (probably should be an array of pointers)">; def ext_c99_array_usage : Extension< "%select{qualifier in |static |}0array size %select{||'[*] '}0is a C99 " "feature">, InGroup; def err_c99_array_usage_cxx : Error< "%select{qualifier in |static |}0array size %select{||'[*] '}0is a C99 " "feature, not permitted in C++">; def err_type_unsupported : Error< "%0 is not supported on this target">; def err_nsconsumed_attribute_mismatch : Error< "overriding method has mismatched ns_consumed attribute on its" " parameter">; def err_nsreturns_retained_attribute_mismatch : Error< "overriding method has mismatched ns_returns_%select{not_retained|retained}0" " attributes">; def err_nserrordomain_invalid_decl : Error< "domain argument %select{|%1 }0does not refer to global constant">; def err_nserrordomain_wrong_type : Error< "domain argument %0 does not point to an NSString or CFString constant">; def warn_nsconsumed_attribute_mismatch : Warning< err_nsconsumed_attribute_mismatch.Text>, InGroup; def warn_nsreturns_retained_attribute_mismatch : Warning< err_nsreturns_retained_attribute_mismatch.Text>, InGroup; def note_getter_unavailable : Note< "or because setter is declared here, but no getter method %0 is found">; def err_invalid_protocol_qualifiers : Error< "invalid protocol qualifiers on non-ObjC type">; def warn_ivar_use_hidden : Warning< "local declaration of %0 hides instance variable">, InGroup; def warn_direct_initialize_call : Warning< "explicit call to +initialize results in duplicate call to +initialize">, InGroup; def warn_direct_super_initialize_call : Warning< "explicit call to [super initialize] should only be in implementation " "of +initialize">, InGroup; def err_ivar_use_in_class_method : Error< "instance variable %0 accessed in class method">; def err_private_ivar_access : Error<"instance variable %0 is private">, AccessControl; def err_protected_ivar_access : Error<"instance variable %0 is protected">, AccessControl; def warn_maynot_respond : Warning<"%0 may not respond to %1">; def ext_typecheck_base_super : Warning< "method parameter type " "%diff{$ does not match super class method parameter type $|" "does not match super class method parameter type}0,1">, InGroup, DefaultIgnore; def warn_missing_method_return_type : Warning< "method has no return type specified; defaults to 'id'">, InGroup, DefaultIgnore; def warn_direct_ivar_access : Warning<"instance variable %0 is being " "directly accessed">, InGroup>, DefaultIgnore; // Spell-checking diagnostics def err_unknown_typename : Error< "unknown type name %0">; def err_unknown_type_or_class_name_suggest : Error< "unknown %select{type|class}1 name %0; did you mean %2?">; def err_unknown_typename_suggest : Error< "unknown type name %0; did you mean %1?">; def err_unknown_nested_typename_suggest : Error< "no type named %0 in %1; did you mean %select{|simply }2%3?">; def err_no_member_suggest : Error<"no member named %0 in %1; did you mean %select{|simply }2%3?">; def err_undeclared_use_suggest : Error< "use of undeclared %0; did you mean %1?">; def err_undeclared_var_use_suggest : Error< "use of undeclared identifier %0; did you mean %1?">; def err_no_template : Error<"no template named %0">; def err_no_template_suggest : Error<"no template named %0; did you mean %1?">; def err_no_member_template : Error<"no template named %0 in %1">; def err_no_member_template_suggest : Error< "no template named %0 in %1; did you mean %select{|simply }2%3?">; def err_non_template_in_template_id : Error< "%0 does not name a template but is followed by template arguments">; def err_non_template_in_template_id_suggest : Error< "%0 does not name a template but is followed by template arguments; " "did you mean %1?">; def err_non_template_in_member_template_id_suggest : Error< "member %0 of %1 is not a template; did you mean %select{|simply }2%3?">; def note_non_template_in_template_id_found : Note< "non-template declaration found by name lookup">; def err_mem_init_not_member_or_class_suggest : Error< "initializer %0 does not name a non-static data member or base " "class; did you mean the %select{base class|member}1 %2?">; def err_field_designator_unknown_suggest : Error< "field designator %0 does not refer to any field in type %1; did you mean " "%2?">; def err_typecheck_member_reference_ivar_suggest : Error< "%0 does not have a member named %1; did you mean %2?">; def err_property_not_found_suggest : Error< "property %0 not found on object of type %1; did you mean %2?">; def err_class_property_found : Error< "property %0 is a class property; did you mean to access it with class '%1'?">; def err_ivar_access_using_property_syntax_suggest : Error< "property %0 not found on object of type %1; did you mean to access instance variable %2?">; def warn_property_access_suggest : Warning< "property %0 not found on object of type %1; did you mean to access property %2?">, InGroup; def err_property_found_suggest : Error< "property %0 found on object of type %1; did you mean to access " "it with the \".\" operator?">; def err_undef_interface_suggest : Error< "cannot find interface declaration for %0; did you mean %1?">; def warn_undef_interface_suggest : Warning< "cannot find interface declaration for %0; did you mean %1?">; def err_undef_superclass_suggest : Error< "cannot find interface declaration for %0, superclass of %1; did you mean " "%2?">; def err_undeclared_protocol_suggest : Error< "cannot find protocol declaration for %0; did you mean %1?">; def note_base_class_specified_here : Note< "base class %0 specified here">; def err_using_directive_suggest : Error< "no namespace named %0; did you mean %1?">; def err_using_directive_member_suggest : Error< "no namespace named %0 in %1; did you mean %select{|simply }2%3?">; def note_namespace_defined_here : Note<"namespace %0 defined here">; def err_sizeof_pack_no_pack_name_suggest : Error< "%0 does not refer to the name of a parameter pack; did you mean %1?">; def note_parameter_pack_here : Note<"parameter pack %0 declared here">; def err_uncasted_use_of_unknown_any : Error< "%0 has unknown type; cast it to its declared type to use it">; def err_uncasted_call_of_unknown_any : Error< "%0 has unknown return type; cast the call to its declared return type">; def err_uncasted_send_to_unknown_any_method : Error< "no known method %select{%objcinstance1|%objcclass1}0; cast the " "message send to the method's return type">; def err_unsupported_unknown_any_decl : Error< "%0 has unknown type, which is not supported for this kind of declaration">; def err_unsupported_unknown_any_expr : Error< "unsupported expression with unknown type">; def err_unsupported_unknown_any_call : Error< "call to unsupported expression with unknown type">; def err_unknown_any_addrof : Error< "the address of a declaration with unknown type " "can only be cast to a pointer type">; def err_unknown_any_addrof_call : Error< "address-of operator cannot be applied to a call to a function with " "unknown return type">; def err_unknown_any_var_function_type : Error< "variable %0 with unknown type cannot be given a function type">; def err_unknown_any_function : Error< "function %0 with unknown type must be given a function type">; def err_filter_expression_integral : Error< "filter expression has non-integral type %0">; def err_non_asm_stmt_in_naked_function : Error< "non-ASM statement in naked function is not supported">; def err_asm_naked_this_ref : Error< "'this' pointer references not allowed in naked functions">; def err_asm_naked_parm_ref : Error< "parameter references not allowed in naked functions">; // OpenCL warnings and errors. def err_invalid_astype_of_different_size : Error< "invalid reinterpretation: sizes of %0 and %1 must match">; def err_static_kernel : Error< "kernel functions cannot be declared static">; def err_method_kernel : Error< "kernel functions cannot be class members">; def err_template_kernel : Error< "kernel functions cannot be used in a template declaration, instantiation or specialization">; def err_opencl_ptrptr_kernel_param : Error< "kernel parameter cannot be declared as a pointer to a pointer">; def err_kernel_arg_address_space : Error< "pointer arguments to kernel functions must reside in '__global', " "'__constant' or '__local' address space">; def err_opencl_ext_vector_component_invalid_length : Error< "vector component access has invalid length %0. Supported: 1,2,3,4,8,16.">; def err_opencl_function_variable : Error< "%select{non-kernel function|function scope}0 variable cannot be declared in %1 address space">; def err_opencl_addrspace_scope : Error< "variables in the %0 address space can only be declared in the outermost " "scope of a kernel function">; def err_static_function_scope : Error< "variables in function scope cannot be declared static">; def err_opencl_bitfields : Error< "bit-fields are not supported in OpenCL">; def err_opencl_vla : Error< "variable length arrays are not supported in OpenCL">; def err_opencl_scalar_type_rank_greater_than_vector_type : Error< "scalar operand type has greater rank than the type of the vector " "element. (%0 and %1)">; def err_bad_kernel_param_type : Error< "%0 cannot be used as the type of a kernel parameter">; def err_opencl_implicit_function_decl : Error< "implicit declaration of function %0 is invalid in OpenCL">; def err_record_with_pointers_kernel_param : Error< "%select{struct|union}0 kernel parameters may not contain pointers">; def note_within_field_of_type : Note< "within field of type %0 declared here">; def note_illegal_field_declared_here : Note< "field of illegal %select{type|pointer type}0 %1 declared here">; def err_opencl_type_struct_or_union_field : Error< "the %0 type cannot be used to declare a structure or union field">; def err_event_t_addr_space_qual : Error< "the event_t type can only be used with __private address space qualifier">; def err_expected_kernel_void_return_type : Error< "kernel must have void return type">; def err_sampler_initializer_not_integer : Error< "sampler_t initialization requires 32-bit integer, not %0">; def warn_sampler_initializer_invalid_bits : Warning< "sampler initializer has invalid %0 bits">, InGroup, DefaultIgnore; def err_sampler_argument_required : Error< "sampler_t variable required - got %0">; def err_wrong_sampler_addressspace: Error< "sampler type cannot be used with the __local and __global address space qualifiers">; def err_opencl_nonconst_global_sampler : Error< "global sampler requires a const or constant address space qualifier">; def err_opencl_cast_non_zero_to_event_t : Error< "cannot cast non-zero value '%0' to 'event_t'">; def err_opencl_global_invalid_addr_space : Error< "%select{program scope|static local|extern}0 variable must reside in %1 address space">; def err_missing_actual_pipe_type : Error< "missing actual type specifier for pipe">; def err_reference_pipe_type : Error < "pipes packet types cannot be of reference type">; def err_opencl_no_main : Error<"%select{function|kernel}0 cannot be called 'main'">; def err_opencl_kernel_attr : Error<"attribute %0 can only be applied to an OpenCL kernel function">; def err_opencl_return_value_with_address_space : Error< "return value cannot be qualified with address space">; def err_opencl_constant_no_init : Error< "variable in constant address space must be initialized">; def err_opencl_atomic_init: Error< "atomic variable can be %select{assigned|initialized}0 to a variable only " "in global address space">; def err_opencl_implicit_vector_conversion : Error< "implicit conversions between vector types (%0 and %1) are not permitted">; def err_opencl_invalid_type_array : Error< "array of %0 type is invalid in OpenCL">; def err_opencl_ternary_with_block : Error< "block type cannot be used as expression in ternary expression in OpenCL">; def err_opencl_pointer_to_type : Error< "pointer to type %0 is invalid in OpenCL">; def err_opencl_type_can_only_be_used_as_function_parameter : Error < "type %0 can only be used as a function parameter in OpenCL">; def warn_opencl_attr_deprecated_ignored : Warning < "%0 attribute is deprecated and ignored in OpenCL version %1">, InGroup; def err_opencl_variadic_function : Error< "invalid prototype, variadic arguments are not allowed in OpenCL">; def err_opencl_requires_extension : Error< "use of %select{type|declaration}0 %1 requires %2 extension to be enabled">; def warn_opencl_generic_address_space_arg : Warning< "passing non-generic address space pointer to %0" " may cause dynamic conversion affecting performance">, InGroup, DefaultIgnore; // OpenCL v2.0 s6.13.6 -- Builtin Pipe Functions def err_opencl_builtin_pipe_first_arg : Error< "first argument to %0 must be a pipe type">; def err_opencl_builtin_pipe_arg_num : Error< "invalid number of arguments to function: %0">; def err_opencl_builtin_pipe_invalid_arg : Error< "invalid argument type to function %0 (expecting %1 having %2)">; def err_opencl_builtin_pipe_invalid_access_modifier : Error< "invalid pipe access modifier (expecting %0)">; // OpenCL access qualifier def err_opencl_invalid_access_qualifier : Error< "access qualifier can only be used for pipe and image type">; def err_opencl_invalid_read_write : Error< "access qualifier %0 can not be used for %1 %select{|prior to OpenCL version 2.0}2">; def err_opencl_multiple_access_qualifiers : Error< "multiple access qualifiers">; def note_opencl_typedef_access_qualifier : Note< "previously declared '%0' here">; // OpenCL v2.0 s6.12.5 Blocks restrictions def err_opencl_block_storage_type : Error< "the __block storage type is not permitted">; def err_opencl_invalid_block_declaration : Error< "invalid block variable declaration - must be %select{const qualified|initialized}0">; def err_opencl_extern_block_declaration : Error< "invalid block variable declaration - using 'extern' storage class is disallowed">; def err_opencl_block_ref_block : Error< "cannot refer to a block inside block">; // OpenCL v2.0 s6.13.9 - Address space qualifier functions. def err_opencl_builtin_to_addr_invalid_arg : Error< "invalid argument %0 to function: %1, expecting a generic pointer argument">; // OpenCL v2.0 s6.13.17 Enqueue kernel restrictions. def err_opencl_enqueue_kernel_incorrect_args : Error< "illegal call to enqueue_kernel, incorrect argument types">; def err_opencl_enqueue_kernel_local_size_args : Error< "mismatch in number of block parameters and local size arguments passed">; def err_opencl_enqueue_kernel_invalid_local_size_type : Error< "illegal call to enqueue_kernel, parameter needs to be specified as integer type">; def err_opencl_enqueue_kernel_blocks_non_local_void_args : Error< "blocks used in enqueue_kernel call are expected to have parameters of type 'local void*'">; def err_opencl_enqueue_kernel_blocks_no_args : Error< "blocks with parameters are not accepted in this prototype of enqueue_kernel call">; def err_opencl_builtin_expected_type : Error< "illegal call to %0, expected %1 argument type">; // OpenCL v2.2 s2.1.2.3 - Vector Component Access def ext_opencl_ext_vector_type_rgba_selector: ExtWarn< "vector component name '%0' is an OpenCL version 2.2 feature">, InGroup; def err_openclcxx_placement_new : Error< "use of placement new requires explicit declaration">; // MIG routine annotations. def warn_mig_server_routine_does_not_return_kern_return_t : Warning< "'mig_server_routine' attribute only applies to routines that return a kern_return_t">, InGroup; } // end of sema category let CategoryName = "OpenMP Issue" in { // OpenMP support. def err_omp_expected_var_arg : Error< "%0 is not a global variable, static local variable or static data member">; def err_omp_expected_var_arg_suggest : Error< "%0 is not a global variable, static local variable or static data member; " "did you mean %1">; def err_omp_global_var_arg : Error< "arguments of '#pragma omp %0' must have %select{global storage|static storage duration}1">; def err_omp_ref_type_arg : Error< "arguments of '#pragma omp %0' cannot be of reference type %1">; def err_omp_region_not_file_context : Error< "directive must be at file or namespace scope">; def err_omp_var_scope : Error< "'#pragma omp %0' must appear in the scope of the %q1 variable declaration">; def err_omp_var_used : Error< "'#pragma omp %0' must precede all references to variable %q1">; def err_omp_var_thread_local : Error< "variable %0 cannot be threadprivate because it is %select{thread-local|a global named register variable}1">; def err_omp_private_incomplete_type : Error< "a private variable with incomplete type %0">; def err_omp_firstprivate_incomplete_type : Error< "a firstprivate variable with incomplete type %0">; def err_omp_lastprivate_incomplete_type : Error< "a lastprivate variable with incomplete type %0">; def err_omp_reduction_incomplete_type : Error< "a reduction list item with incomplete type %0">; def err_omp_unexpected_clause_value : Error< "expected %0 in OpenMP clause '%1'">; def err_omp_expected_var_name_member_expr : Error< "expected variable name%select{| or data member of current class}0">; def err_omp_expected_var_name_member_expr_or_array_item : Error< "expected variable name%select{|, data member of current class}0, array element or array section">; def err_omp_expected_addressable_lvalue_or_array_item : Error< "expected addressable lvalue expression, array element%select{ or array section|, array section or array shaping expression}0%select{| of non 'omp_depend_t' type}1">; def err_omp_expected_named_var_member_or_array_expression: Error< "expected expression containing only member accesses and/or array sections based on named variables">; def err_omp_bit_fields_forbidden_in_clause : Error< "bit fields cannot be used to specify storage in a '%0' clause">; def err_array_section_does_not_specify_contiguous_storage : Error< "array section does not specify contiguous storage">; def err_array_section_does_not_specify_length : Error< "array section does not specify length for outermost dimension">; def err_omp_union_type_not_allowed : Error< "mapping of union members is not allowed">; def err_omp_expected_access_to_data_field : Error< "expected access to data field">; def err_omp_multiple_array_items_in_map_clause : Error< "multiple array elements associated with the same variable are not allowed in map clauses of the same construct">; def err_omp_duplicate_map_type_modifier : Error< "same map type modifier has been specified more than once">; def err_omp_duplicate_motion_modifier : Error< "same motion modifier has been specified more than once">; def err_omp_pointer_mapped_along_with_derived_section : Error< "pointer cannot be mapped along with a section derived from itself">; def err_omp_original_storage_is_shared_and_does_not_contain : Error< "original storage of expression in data environment is shared but data environment do not fully contain mapped expression storage">; def err_omp_same_pointer_dereferenced : Error< "same pointer dereferenced in multiple different ways in map clause expressions">; def note_omp_task_predetermined_firstprivate_here : Note< "predetermined as a firstprivate in a task construct here">; def err_omp_threadprivate_incomplete_type : Error< "threadprivate variable with incomplete type %0">; def err_omp_no_dsa_for_variable : Error< "variable %0 must have explicitly specified data sharing attributes">; def err_omp_defaultmap_no_attr_for_variable : Error< "variable %0 must have explicitly specified data sharing attributes, data mapping attributes, or in an is_device_ptr clause">; def note_omp_default_dsa_none : Note< "explicit data sharing attribute requested here">; def note_omp_defaultmap_attr_none : Note< "explicit data sharing attribute, data mapping attribute, or is_device_ptr clause requested here">; def err_omp_wrong_dsa : Error< "%0 variable cannot be %1">; def err_omp_variably_modified_type_not_supported : Error< "arguments of OpenMP clause '%0' in '#pragma omp %2' directive cannot be of variably-modified type %1">; def note_omp_explicit_dsa : Note< "defined as %0">; def note_omp_predetermined_dsa : Note< "%select{static data member is predetermined as shared|" "variable with static storage duration is predetermined as shared|" "loop iteration variable is predetermined as private|" "loop iteration variable is predetermined as linear|" "loop iteration variable is predetermined as lastprivate|" "constant variable is predetermined as shared|" "global variable is predetermined as shared|" "non-shared variable in a task construct is predetermined as firstprivate|" "variable with automatic storage duration is predetermined as private}0" "%select{|; perhaps you forget to enclose 'omp %2' directive into a parallel or another task region?}1">; def note_omp_implicit_dsa : Note< "implicitly determined as %0">; def err_omp_loop_var_dsa : Error< "loop iteration variable in the associated loop of 'omp %1' directive may not be %0, predetermined as %2">; def err_omp_not_for : Error< "%select{statement after '#pragma omp %1' must be a for loop|" "expected %2 for loops after '#pragma omp %1'%select{|, but found only %4}3}0">; def note_omp_collapse_ordered_expr : Note< "as specified in %select{'collapse'|'ordered'|'collapse' and 'ordered'}0 clause%select{||s}0">; def err_omp_negative_expression_in_clause : Error< "argument to '%0' clause must be a %select{non-negative|strictly positive}1 integer value">; def err_omp_not_integral : Error< "expression must have integral or unscoped enumeration " "type, not %0">; def err_omp_threadprivate_in_target : Error< "threadprivate variables cannot be used in target constructs">; def err_omp_incomplete_type : Error< "expression has incomplete class type %0">; def err_omp_explicit_conversion : Error< "expression requires explicit conversion from %0 to %1">; def note_omp_conversion_here : Note< "conversion to %select{integral|enumeration}0 type %1 declared here">; def err_omp_ambiguous_conversion : Error< "ambiguous conversion from type %0 to an integral or unscoped " "enumeration type">; def err_omp_iterator_not_integral_or_pointer : Error< "expected integral or pointer type as the iterator-type, not %0">; def err_omp_iterator_step_not_integral : Error< "iterator step expression %0 is not the integral expression">; def err_omp_iterator_step_constant_zero : Error< "iterator step expression %0 evaluates to 0">; def err_omp_required_access : Error< "%0 variable must be %1">; def err_omp_const_variable : Error< "const-qualified variable cannot be %0">; def err_omp_const_not_mutable_variable : Error< "const-qualified variable without mutable fields cannot be %0">; def err_omp_const_list_item : Error< "const-qualified list item cannot be %0">; def err_omp_linear_incomplete_type : Error< "a linear variable with incomplete type %0">; def err_omp_linear_expected_int_or_ptr : Error< "argument of a linear clause should be of integral or pointer " "type, not %0">; def warn_omp_linear_step_zero : Warning< "zero linear step (%0 %select{|and other variables in clause }1should probably be const)">, InGroup; def warn_omp_alignment_not_power_of_two : Warning< "aligned clause will be ignored because the requested alignment is not a power of 2">, InGroup; def err_omp_invalid_target_decl : Error< "%0 used in declare target directive is not a variable or a function name">; def err_omp_declare_target_multiple : Error< "%0 appears multiple times in clauses on the same declare target directive">; def err_omp_declare_target_to_and_link : Error< "%0 must not appear in both clauses 'to' and 'link'">; def warn_omp_not_in_target_context : Warning< "declaration is not declared in any declare target region">, InGroup; def err_omp_function_in_link_clause : Error< "function name is not allowed in 'link' clause">; def err_omp_aligned_expected_array_or_ptr : Error< "argument of aligned clause should be array" "%select{ or pointer|, pointer, reference to array or reference to pointer}1" ", not %0">; def err_omp_used_in_clause_twice : Error< "%select{a variable|a parameter|'this'}0 cannot appear in more than one %1 clause">; def err_omp_local_var_in_threadprivate_init : Error< "variable with local storage in initial value of threadprivate variable">; def err_omp_loop_not_canonical_init : Error< "initialization clause of OpenMP for loop is not in canonical form " "('var = init' or 'T var = init')">; def ext_omp_loop_not_canonical_init : ExtWarn< "initialization clause of OpenMP for loop is not in canonical form " "('var = init' or 'T var = init')">, InGroup; def err_omp_loop_not_canonical_cond : Error< "condition of OpenMP for loop must be a relational comparison " "('<', '<=', '>', %select{or '>='|'>=', or '!='}0) of loop variable %1">; def err_omp_loop_not_canonical_incr : Error< "increment clause of OpenMP for loop must perform simple addition " "or subtraction on loop variable %0">; def err_omp_loop_variable_type : Error< "variable must be of integer or %select{pointer|random access iterator}0 type">; def err_omp_loop_incr_not_compatible : Error< "increment expression must cause %0 to %select{decrease|increase}1 " "on each iteration of OpenMP for loop">; def note_omp_loop_cond_requres_compatible_incr : Note< "loop step is expected to be %select{negative|positive}0 due to this condition">; def err_omp_loop_diff_cxx : Error< "could not calculate number of iterations calling 'operator-' with " "upper and lower loop bounds">; def err_omp_loop_cannot_use_stmt : Error< "'%0' statement cannot be used in OpenMP for loop">; def err_omp_simd_region_cannot_use_stmt : Error< "'%0' statement cannot be used in OpenMP simd region">; def warn_omp_loop_64_bit_var : Warning< "OpenMP loop iteration variable cannot have more than 64 bits size and will be narrowed">, InGroup; def err_omp_unknown_reduction_identifier : Error< "incorrect reduction identifier, expected one of '+', '-', '*', '&', '|', '^', " "'&&', '||', 'min' or 'max' or declare reduction for type %0">; def err_omp_not_resolved_reduction_identifier : Error< "unable to resolve declare reduction construct for type %0">; def err_omp_reduction_ref_type_arg : Error< "argument of OpenMP clause '%0' must reference the same object in all threads">; def err_omp_clause_not_arithmetic_type_arg : Error< "arguments of OpenMP clause '%0' for 'min' or 'max' must be of %select{scalar|arithmetic}1 type">; def err_omp_clause_floating_type_arg : Error< "arguments of OpenMP clause '%0' with bitwise operators cannot be of floating type">; def err_omp_once_referenced : Error< "variable can appear only once in OpenMP '%0' clause">; def err_omp_once_referenced_in_target_update : Error< "variable can appear only once in OpenMP 'target update' construct">; def note_omp_referenced : Note< "previously referenced here">; def err_omp_reduction_in_task : Error< "reduction variables may not be accessed in an explicit task">; def err_omp_reduction_id_not_compatible : Error< "list item of type %0 is not valid for specified reduction operation: unable to provide default initialization value">; def err_omp_reduction_identifier_mismatch : Error< "in_reduction variable must have the same reduction operation as in a task_reduction clause">; def note_omp_previous_reduction_identifier : Note< "previously marked as task_reduction with different reduction operation">; def err_omp_prohibited_region : Error< "region cannot be%select{| closely}0 nested inside '%1' region" "%select{|; perhaps you forget to enclose 'omp %3' directive into a parallel region?|" "; perhaps you forget to enclose 'omp %3' directive into a for or a parallel for region with 'ordered' clause?|" "; perhaps you forget to enclose 'omp %3' directive into a target region?|" "; perhaps you forget to enclose 'omp %3' directive into a teams region?|" "; perhaps you forget to enclose 'omp %3' directive into a for, simd, for simd, parallel for, or parallel for simd region?}2">; def err_omp_prohibited_region_simd : Error< "OpenMP constructs may not be nested inside a simd region%select{| except for ordered simd, simd, scan, or atomic directive}0">; def err_omp_prohibited_region_atomic : Error< "OpenMP constructs may not be nested inside an atomic region">; def err_omp_prohibited_region_critical_same_name : Error< "cannot nest 'critical' regions having the same name %0">; def note_omp_previous_critical_region : Note< "previous 'critical' region starts here">; def err_omp_several_directives_in_region : Error< "exactly one '%0' directive must appear in the loop body of an enclosing directive">; def note_omp_previous_directive : Note< "previous '%0' directive used here">; def err_omp_sections_not_compound_stmt : Error< "the statement for '#pragma omp sections' must be a compound statement">; def err_omp_parallel_sections_not_compound_stmt : Error< "the statement for '#pragma omp parallel sections' must be a compound statement">; def err_omp_orphaned_section_directive : Error< "%select{orphaned 'omp section' directives are prohibited, it|'omp section' directive}0" " must be closely nested to a sections region%select{|, not a %1 region}0">; def err_omp_sections_substmt_not_section : Error< "statement in 'omp sections' directive must be enclosed into a section region">; def err_omp_parallel_sections_substmt_not_section : Error< "statement in 'omp parallel sections' directive must be enclosed into a section region">; def err_omp_parallel_reduction_in_task_firstprivate : Error< "argument of a reduction clause of a %0 construct must not appear in a firstprivate clause on a task construct">; def err_omp_atomic_read_not_expression_statement : Error< "the statement for 'atomic read' must be an expression statement of form 'v = x;'," " where v and x are both lvalue expressions with scalar type">; def note_omp_atomic_read_write: Note< "%select{expected an expression statement|expected built-in assignment operator|expected expression of scalar type|expected lvalue expression}0">; def err_omp_atomic_write_not_expression_statement : Error< "the statement for 'atomic write' must be an expression statement of form 'x = expr;'," " where x is a lvalue expression with scalar type">; def err_omp_atomic_update_not_expression_statement : Error< "the statement for 'atomic update' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x'," " where x is an lvalue expression with scalar type">; def err_omp_atomic_not_expression_statement : Error< "the statement for 'atomic' must be an expression statement of form '++x;', '--x;', 'x++;', 'x--;', 'x binop= expr;', 'x = x binop expr' or 'x = expr binop x'," " where x is an lvalue expression with scalar type">; def note_omp_atomic_update: Note< "%select{expected an expression statement|expected built-in binary or unary operator|expected unary decrement/increment operation|" "expected expression of scalar type|expected assignment expression|expected built-in binary operator|" "expected one of '+', '*', '-', '/', '&', '^', '%|', '<<', or '>>' built-in operations|expected in right hand side of expression}0">; def err_omp_atomic_capture_not_expression_statement : Error< "the statement for 'atomic capture' must be an expression statement of form 'v = ++x;', 'v = --x;', 'v = x++;', 'v = x--;', 'v = x binop= expr;', 'v = x = x binop expr' or 'v = x = expr binop x'," " where x and v are both lvalue expressions with scalar type">; def err_omp_atomic_capture_not_compound_statement : Error< "the statement for 'atomic capture' must be a compound statement of form '{v = x; x binop= expr;}', '{x binop= expr; v = x;}'," " '{v = x; x = x binop expr;}', '{v = x; x = expr binop x;}', '{x = x binop expr; v = x;}', '{x = expr binop x; v = x;}' or '{v = x; x = expr;}'," " '{v = x; x++;}', '{v = x; ++x;}', '{++x; v = x;}', '{x++; v = x;}', '{v = x; x--;}', '{v = x; --x;}', '{--x; v = x;}', '{x--; v = x;}'" " where x is an lvalue expression with scalar type">; def note_omp_atomic_capture: Note< "%select{expected assignment expression|expected compound statement|expected exactly two expression statements|expected in right hand side of the first expression}0">; def err_omp_atomic_several_clauses : Error< "directive '#pragma omp atomic' cannot contain more than one 'read', 'write', 'update' or 'capture' clause">; def err_omp_several_mem_order_clauses : Error< "directive '#pragma omp %0' cannot contain more than one %select{'seq_cst', 'relaxed', |}1'acq_rel', 'acquire' or 'release' clause">; def err_omp_atomic_incompatible_mem_order_clause : Error< "directive '#pragma omp atomic%select{ %0|}1' cannot be used with '%2' clause">; def note_omp_previous_mem_order_clause : Note< "'%0' clause used here">; def err_omp_target_contains_not_only_teams : Error< "target construct with nested teams region contains statements outside of the teams construct">; def note_omp_nested_teams_construct_here : Note< "nested teams construct here">; def note_omp_nested_statement_here : Note< "%select{statement|directive}0 outside teams construct here">; def err_omp_single_copyprivate_with_nowait : Error< "the 'copyprivate' clause must not be used with the 'nowait' clause">; def note_omp_nowait_clause_here : Note< "'nowait' clause is here">; def err_omp_single_decl_in_declare_simd_variant : Error< "single declaration is expected after 'declare %select{simd|variant}0' directive">; def err_omp_function_expected : Error< "'#pragma omp declare %select{simd|variant}0' can only be applied to functions">; def err_omp_wrong_cancel_region : Error< "one of 'for', 'parallel', 'sections' or 'taskgroup' is expected">; def err_omp_parent_cancel_region_nowait : Error< "parent region for 'omp %select{cancellation point|cancel}0' construct cannot be nowait">; def err_omp_parent_cancel_region_ordered : Error< "parent region for 'omp %select{cancellation point|cancel}0' construct cannot be ordered">; def err_omp_reduction_wrong_type : Error<"reduction type cannot be %select{qualified with 'const', 'volatile' or 'restrict'|a function|a reference|an array}0 type">; def err_omp_wrong_var_in_declare_reduction : Error<"only %select{'omp_priv' or 'omp_orig'|'omp_in' or 'omp_out'}0 variables are allowed in %select{initializer|combiner}0 expression">; def err_omp_declare_reduction_redefinition : Error<"redefinition of user-defined reduction for type %0">; def err_omp_mapper_wrong_type : Error< "mapper type must be of struct, union or class type">; def err_omp_declare_mapper_wrong_var : Error< "only variable %0 is allowed in map clauses of this 'omp declare mapper' directive">; def err_omp_declare_mapper_redefinition : Error< "redefinition of user-defined mapper for type %0 with name %1">; def err_omp_invalid_mapper: Error< "cannot find a valid user-defined mapper for type %0 with name %1">; def err_omp_array_section_use : Error<"OpenMP array section is not allowed here">; def err_omp_array_shaping_use : Error<"OpenMP array shaping operation is not allowed here">; def err_omp_iterator_use : Error<"OpenMP iterator is not allowed here">; def err_omp_typecheck_section_value : Error< "subscripted value is not an array or pointer">; def err_omp_typecheck_section_not_integer : Error< "array section %select{lower bound|length}0 is not an integer">; def err_omp_typecheck_shaping_not_integer : Error< "array shaping operation dimension is not an integer">; def err_omp_shaping_dimension_not_positive : Error< "array shaping dimension is evaluated to a non-positive value %0">; def err_omp_section_function_type : Error< "section of pointer to function type %0">; def warn_omp_section_is_char : Warning<"array section %select{lower bound|length}0 is of type 'char'">, InGroup, DefaultIgnore; def err_omp_section_incomplete_type : Error< "section of pointer to incomplete type %0">; def err_omp_section_not_subset_of_array : Error< "array section must be a subset of the original array">; def err_omp_section_length_negative : Error< "section length is evaluated to a negative value %0">; def err_omp_section_stride_non_positive : Error< "section stride is evaluated to a non-positive value %0">; def err_omp_section_length_undefined : Error< "section length is unspecified and cannot be inferred because subscripted value is %select{not an array|an array of unknown bound}0">; def err_omp_wrong_linear_modifier : Error< "expected %select{'val' modifier|one of 'ref', val' or 'uval' modifiers}0">; def err_omp_wrong_linear_modifier_non_reference : Error< "variable of non-reference type %0 can be used only with 'val' modifier, but used with '%1'">; def err_omp_wrong_simdlen_safelen_values : Error< "the value of 'simdlen' parameter must be less than or equal to the value of the 'safelen' parameter">; def err_omp_wrong_if_directive_name_modifier : Error< "directive name modifier '%0' is not allowed for '#pragma omp %1'">; def err_omp_no_more_if_clause : Error< "no more 'if' clause is allowed">; def err_omp_unnamed_if_clause : Error< "expected%select{| one of}0 %1 directive name modifier%select{|s}0">; def note_omp_previous_named_if_clause : Note< "previous clause with directive name modifier specified here">; def err_omp_ordered_directive_with_param : Error< "'ordered' directive %select{without any clauses|with 'threads' clause}0 cannot be closely nested inside ordered region with specified parameter">; def err_omp_ordered_directive_without_param : Error< "'ordered' directive with 'depend' clause cannot be closely nested inside ordered region without specified parameter">; def note_omp_ordered_param : Note< "'ordered' clause%select{| with specified parameter}0">; def err_omp_expected_base_var_name : Error< "expected variable name as a base of the array %select{subscript|section}0">; def err_omp_map_shared_storage : Error< "variable already marked as mapped in current construct">; def err_omp_invalid_map_type_for_directive : Error< "%select{map type '%1' is not allowed|map type must be specified}0 for '#pragma omp %2'">; def err_omp_no_clause_for_directive : Error< "expected at least one %0 clause for '#pragma omp %1'">; def err_omp_threadprivate_in_clause : Error< "threadprivate variables are not allowed in '%0' clause">; def err_omp_wrong_ordered_loop_count : Error< "the parameter of the 'ordered' clause must be greater than or equal to the parameter of the 'collapse' clause">; def note_collapse_loop_count : Note< "parameter of the 'collapse' clause">; def err_omp_clauses_mutually_exclusive : Error< "'%0' and '%1' clause are mutually exclusive and may not appear on the same directive">; def note_omp_previous_clause : Note< "'%0' clause is specified here">; def err_omp_hint_clause_no_name : Error< "the name of the construct must be specified in presence of 'hint' clause">; def err_omp_critical_with_hint : Error< "constructs with the same name must have a 'hint' clause with the same value">; def note_omp_critical_hint_here : Note< "%select{|previous }0'hint' clause with value '%1'">; def note_omp_critical_no_hint : Note< "%select{|previous }0directive with no 'hint' clause specified">; def err_omp_depend_clause_thread_simd : Error< "'depend' clauses cannot be mixed with '%0' clause">; def err_omp_depend_sink_expected_loop_iteration : Error< "expected%select{| %1}0 loop iteration variable">; def err_omp_depend_sink_unexpected_expr : Error< "unexpected expression: number of expressions is larger than the number of associated loops">; def err_omp_depend_sink_expected_plus_minus : Error< "expected '+' or '-' operation">; def err_omp_depend_sink_source_not_allowed : Error< "'depend(%select{source|sink:vec}0)' clause%select{|s}0 cannot be mixed with 'depend(%select{sink:vec|source}0)' clause%select{s|}0">; def err_omp_depend_zero_length_array_section_not_allowed : Error< "zero-length array section is not allowed in 'depend' clause">; def err_omp_depend_sink_source_with_modifier : Error< "depend modifier cannot be used with 'sink' or 'source' depend type">; def err_omp_depend_modifier_not_iterator : Error< "expected iterator specification as depend modifier">; def err_omp_linear_ordered : Error< "'linear' clause cannot be specified along with 'ordered' clause with a parameter">; def err_omp_unexpected_schedule_modifier : Error< "modifier '%0' cannot be used along with modifier '%1'">; def err_omp_schedule_nonmonotonic_static : Error< "'nonmonotonic' modifier can only be specified with 'dynamic' or 'guided' schedule kind">; def err_omp_simple_clause_incompatible_with_ordered : Error< "'%0' clause with '%1' modifier cannot be specified if an 'ordered' clause is specified">; def err_omp_ordered_simd : Error< "'ordered' clause with a parameter can not be specified in '#pragma omp %0' directive">; def err_omp_variable_in_given_clause_and_dsa : Error< "%0 variable cannot be in a %1 clause in '#pragma omp %2' directive">; def err_omp_param_or_this_in_clause : Error< "expected reference to one of the parameters of function %0%select{| or 'this'}1">; def err_omp_expected_uniform_param : Error< "expected a reference to a parameter specified in a 'uniform' clause">; def err_omp_expected_int_param : Error< "expected a reference to an integer-typed parameter">; def err_omp_at_least_one_motion_clause_required : Error< "expected at least one 'to' clause or 'from' clause specified to '#pragma omp target update'">; def err_omp_usedeviceptr_not_a_pointer : Error< "expected pointer or reference to pointer in 'use_device_ptr' clause">; def err_omp_argument_type_isdeviceptr : Error < "expected pointer, array, reference to pointer, or reference to array in 'is_device_ptr clause'">; def warn_omp_nesting_simd : Warning< "OpenMP only allows an ordered construct with the simd clause nested in a simd construct">, InGroup; def err_omp_orphaned_device_directive : Error< "orphaned 'omp %0' directives are prohibited" "; perhaps you forget to enclose the directive into a " "%select{|||target |teams|for, simd, for simd, parallel for, or parallel for simd }1region?">; def err_omp_reduction_non_addressable_expression : Error< "expected addressable reduction item for the task-based directives">; def err_omp_reduction_with_nogroup : Error< "'reduction' clause cannot be used with 'nogroup' clause">; def err_omp_reduction_vla_unsupported : Error< "cannot generate code for reduction on %select{|array section, which requires a }0variable length array">; def err_omp_linear_distribute_var_non_loop_iteration : Error< "only loop iteration variables are allowed in 'linear' clause in distribute directives">; def warn_omp_non_trivial_type_mapped : Warning< "Type %0 is not trivially copyable and not guaranteed to be mapped correctly">, InGroup; def err_omp_requires_clause_redeclaration : Error < "Only one %0 clause can appear on a requires directive in a single translation unit">; def note_omp_requires_previous_clause : Note < "%0 clause previously used here">; def err_omp_directive_before_requires : Error < "'%0' region encountered before requires directive with '%1' clause">; def note_omp_requires_encountered_directive : Note < "'%0' previously encountered here">; def err_omp_invalid_scope : Error < "'#pragma omp %0' directive must appear only in file scope">; def note_omp_invalid_length_on_this_ptr_mapping : Note < "expected length on mapping of 'this' array section expression to be '1'">; def note_omp_invalid_lower_bound_on_this_ptr_mapping : Note < "expected lower bound on mapping of 'this' array section expression to be '0' or not specified">; def note_omp_invalid_subscript_on_this_ptr_map : Note < "expected 'this' subscript expression on map clause to be 'this[0]'">; def err_omp_invalid_map_this_expr : Error < "invalid 'this' expression on 'map' clause">; def err_omp_implied_type_not_found : Error< "'%0' type not found; include ">; def err_omp_expected_omp_depend_t_lvalue : Error< "expected lvalue expression%select{ of 'omp_depend_t' type, not %1|}0">; def err_omp_depobj_expected : Error< "expected depobj expression">; def err_omp_depobj_single_clause_expected : Error< "exactly one of 'depend', 'destroy', or 'update' clauses is expected">; def err_omp_scan_single_clause_expected : Error< "exactly one of 'inclusive' or 'exclusive' clauses is expected">; def err_omp_inclusive_exclusive_not_reduction : Error< "the list item must appear in 'reduction' clause with the 'inscan' modifier " "of the parent directive">; def err_omp_reduction_not_inclusive_exclusive : Error< "the inscan reduction list item must appear as a list item in an 'inclusive' or" " 'exclusive' clause on an inner 'omp scan' directive">; def err_omp_wrong_inscan_reduction : Error< "'inscan' modifier can be used only in 'omp for', 'omp simd', 'omp for simd'," " 'omp parallel for', or 'omp parallel for simd' directive">; def err_omp_inscan_reduction_expected : Error< "expected 'reduction' clause with the 'inscan' modifier">; def note_omp_previous_inscan_reduction : Note< "'reduction' clause with 'inscan' modifier is used here">; def err_omp_expected_predefined_allocator : Error< "expected one of the predefined allocators for the variables with the static " "storage: 'omp_default_mem_alloc', 'omp_large_cap_mem_alloc', " "'omp_const_mem_alloc', 'omp_high_bw_mem_alloc', 'omp_low_lat_mem_alloc', " "'omp_cgroup_mem_alloc', 'omp_pteam_mem_alloc' or 'omp_thread_mem_alloc'">; def warn_omp_used_different_allocator : Warning< "allocate directive specifies %select{default|'%1'}0 allocator while " "previously used %select{default|'%3'}2">, InGroup; def note_omp_previous_allocator : Note< "previous allocator is specified here">; def err_expected_allocator_clause : Error<"expected an 'allocator' clause " "inside of the target region; provide an 'allocator' clause or use 'requires'" " directive with the 'dynamic_allocators' clause">; def err_expected_allocator_expression : Error<"expected an allocator expression " "inside of the target region; provide an allocator expression or use 'requires'" " directive with the 'dynamic_allocators' clause">; def warn_omp_allocate_thread_on_task_target_directive : Warning< "allocator with the 'thread' trait access has unspecified behavior on '%0' directive">, InGroup; def err_omp_expected_private_copy_for_allocate : Error< "the referenced item is not found in any private clause on the same directive">; def err_omp_stmt_depends_on_loop_counter : Error< "the loop %select{initializer|condition}0 expression depends on the current loop control variable">; def err_omp_invariant_or_linear_dependency : Error< "expected loop invariant expression or ' * %0 + ' kind of expression">; def err_omp_wrong_dependency_iterator_type : Error< "expected an integer or a pointer type of the outer loop counter '%0' for non-rectangular nests">; def err_device_unsupported_type : Error < "%0 requires %1 bit size %2 type support, but device '%3' does not support it">; def err_omp_lambda_capture_in_declare_target_not_to : Error< "variable captured in declare target region must appear in a to clause">; def err_omp_device_type_mismatch : Error< "'device_type(%0)' does not match previously specified 'device_type(%1)' for the same declaration">; def err_omp_wrong_device_function_call : Error< "function with 'device_type(%0)' is not available on %select{device|host}1">; def note_omp_marked_device_type_here : Note<"marked as 'device_type(%0)' here">; def warn_omp_declare_target_after_first_use : Warning< "declaration marked as declare target after first use, it may lead to incorrect results">, InGroup; def err_omp_declare_variant_incompat_attributes : Error< "'#pragma omp declare variant' is not compatible with any target-specific attributes">; def warn_omp_declare_variant_score_not_constant : Warning<"score expressions in the OpenMP context selector need to be " "constant; %0 is not and will be ignored">, InGroup; def err_omp_declare_variant_user_condition_not_constant : Error<"the user condition in the OpenMP context selector needs to be " "constant; %0 is not">; def warn_omp_declare_variant_after_used : Warning< "'#pragma omp declare variant' cannot be applied for function after first " "usage; the original function might be used">, InGroup; def warn_omp_declare_variant_after_emitted : Warning< "'#pragma omp declare variant' cannot be applied to the function that was defined already;" " the original function might be used">, InGroup; def err_omp_declare_variant_doesnt_support : Error< "'#pragma omp declare variant' does not " "support %select{function templates|virtual functions|" "deduced return types|constructors|destructors|deleted functions|" "defaulted functions|constexpr functions|consteval function}0">; def err_omp_declare_variant_diff : Error< "function with '#pragma omp declare variant' has a different %select{calling convention" "|return type|constexpr specification|inline specification|storage class|" "linkage}0">; def err_omp_declare_variant_incompat_types : Error< "variant in '#pragma omp declare variant' with type %0 is incompatible with type %1" >; def warn_omp_declare_variant_marked_as_declare_variant : Warning< "variant function in '#pragma omp declare variant' is itself marked as '#pragma omp declare variant'" >, InGroup; def note_omp_marked_declare_variant_here : Note<"marked as 'declare variant' here">; def err_omp_one_defaultmap_each_category: Error< "at most one defaultmap clause for each variable-category can appear on the directive">; def err_omp_lastprivate_conditional_non_scalar : Error< "expected list item of scalar type in 'lastprivate' clause with 'conditional' modifier" >; def err_omp_flush_order_clause_and_list : Error< "'flush' directive with memory order clause '%0' cannot have the list">; def note_omp_flush_order_clause_here : Note< "memory order clause '%0' is specified here">; def err_omp_non_lvalue_in_map_or_motion_clauses: Error< "expected addressable lvalue in '%0' clause">; def err_omp_var_expected : Error< "expected variable of the '%0' type%select{|, not %2}1">; def warn_unknown_declare_variant_isa_trait : Warning<"isa trait '%0' is not known to the current target; verify the " "spelling or consider restricting the context selector with the " "'arch' selector further">, InGroup; def err_omp_non_pointer_type_array_shaping_base : Error< "expected expression with a pointer to a complete type as a base of an array " "shaping operation">; def err_omp_reduction_task_not_parallel_or_worksharing : Error< "'reduction' clause with 'task' modifier allowed only on non-simd parallel or" " worksharing constructs">; def err_omp_expected_array_alloctraits : Error< "expected constant sized array of 'omp_alloctrait_t' elements, not %0">; def err_omp_predefined_allocator_with_traits : Error< "predefined allocator cannot have traits specified">; def note_omp_predefined_allocator : Note< "predefined trait '%0' used here">; def err_omp_nonpredefined_allocator_without_traits : Error< "non-predefined allocator must have traits specified">; def err_omp_allocator_used_in_clauses : Error< "allocators used in 'uses_allocators' clause cannot appear in other " "data-sharing or data-mapping attribute clauses">; def err_omp_allocator_not_in_uses_allocators : Error< "allocator must be specified in the 'uses_allocators' clause">; def note_omp_protected_structured_block : Note<"jump bypasses OpenMP structured block">; def note_omp_exits_structured_block : Note<"jump exits scope of OpenMP structured block">; } // end of OpenMP category let CategoryName = "Related Result Type Issue" in { // Objective-C related result type compatibility def warn_related_result_type_compatibility_class : Warning< "method is expected to return an instance of its class type " "%diff{$, but is declared to return $|" ", but is declared to return different type}0,1">; def warn_related_result_type_compatibility_protocol : Warning< "protocol method is expected to return an instance of the implementing " "class, but is declared to return %0">; def note_related_result_type_family : Note< "%select{overridden|current}0 method is part of the '%select{|alloc|copy|init|" "mutableCopy|new|autorelease|dealloc|finalize|release|retain|retainCount|" "self}1' method family%select{| and is expected to return an instance of its " "class type}0">; def note_related_result_type_overridden : Note< "overridden method returns an instance of its class type">; def note_related_result_type_inferred : Note< "%select{class|instance}0 method %1 is assumed to return an instance of " "its receiver type (%2)">; def note_related_result_type_explicit : Note< "%select{overridden|current}0 method is explicitly declared 'instancetype'" "%select{| and is expected to return an instance of its class type}0">; def err_invalid_type_for_program_scope_var : Error< "the %0 type cannot be used to declare a program scope variable">; } let CategoryName = "Modules Issue" in { def err_module_decl_in_module_map_module : Error< "'module' declaration found while building module from module map">; def err_module_decl_in_header_module : Error< "'module' declaration found while building header unit">; def err_module_interface_implementation_mismatch : Error< "missing 'export' specifier in module declaration while " "building module interface">; def err_current_module_name_mismatch : Error< "module name '%0' specified on command line does not match name of module">; def err_module_redefinition : Error< "redefinition of module '%0'">; def note_prev_module_definition : Note<"previously defined here">; def note_prev_module_definition_from_ast_file : Note<"module loaded from '%0'">; def err_module_not_defined : Error< "definition of module '%0' is not available; use -fmodule-file= to specify " "path to precompiled module interface">; def err_module_redeclaration : Error< "translation unit contains multiple module declarations">; def note_prev_module_declaration : Note<"previous module declaration is here">; def err_module_declaration_missing : Error< "missing 'export module' declaration in module interface unit">; def err_module_declaration_missing_after_global_module_introducer : Error< "missing 'module' declaration at end of global module fragment " "introduced here">; def err_module_private_specialization : Error< "%select{template|partial|member}0 specialization cannot be " "declared __module_private__">; def err_module_private_local : Error< "%select{local variable|parameter|typedef}0 %1 cannot be declared " "__module_private__">; def err_module_private_local_class : Error< "local %select{struct|interface|union|class|enum}0 cannot be declared " "__module_private__">; def err_module_unimported_use : Error< "%select{declaration|definition|default argument|" "explicit specialization|partial specialization}0 of %1 must be imported " "from module '%2' before it is required">; def err_module_unimported_use_header : Error< "%select{missing '#include'|missing '#include %3'}2; " "%select{||default argument of |explicit specialization of |" "partial specialization of }0%1 must be " "%select{declared|defined|defined|declared|declared}0 " "before it is used">; def err_module_unimported_use_multiple : Error< "%select{declaration|definition|default argument|" "explicit specialization|partial specialization}0 of %1 must be imported " "from one of the following modules before it is required:%2">; def note_unreachable_entity : Note< "%select{declaration|definition|default argument declared|" "explicit specialization declared|partial specialization declared}0 here " "is not %select{visible|reachable|reachable|reachable|reachable|reachable}0">; def ext_module_import_in_extern_c : ExtWarn< "import of C++ module '%0' appears within extern \"C\" language linkage " "specification">, DefaultError, InGroup>; def err_module_import_not_at_top_level_fatal : Error< "import of module '%0' appears within %1">, DefaultFatal; def ext_module_import_not_at_top_level_noop : ExtWarn< "redundant #include of module '%0' appears within %1">, DefaultError, InGroup>; def note_module_import_not_at_top_level : Note<"%0 begins here">; def err_module_self_import : Error< "import of module '%0' appears within same top-level module '%1'">; def err_module_import_in_implementation : Error< "@import of module '%0' in implementation of '%1'; use #import">; // C++ Modules def err_module_decl_not_at_start : Error< "module declaration must occur at the start of the translation unit">; def note_global_module_introducer_missing : Note< "add 'module;' to the start of the file to introduce a " "global module fragment">; def err_export_within_anonymous_namespace : Error< "export declaration appears within anonymous namespace">; def note_anonymous_namespace : Note<"anonymous namespace begins here">; def ext_export_no_name_block : ExtWarn< "ISO C++20 does not permit %select{an empty|a static_assert}0 declaration " "to appear in an export block">, InGroup; def ext_export_no_names : ExtWarn< "ISO C++20 does not permit a declaration that does not introduce any names " "to be exported">, InGroup; def note_export : Note<"export block begins here">; def err_export_no_name : Error< "%select{empty|static_assert|asm}0 declaration cannot be exported">; def ext_export_using_directive : ExtWarn< "ISO C++20 does not permit using directive to be exported">, InGroup>; def err_export_within_export : Error< "export declaration appears within another export declaration">; def err_export_internal : Error< "declaration of %0 with internal linkage cannot be exported">; def err_export_using_internal : Error< "using declaration referring to %0 with internal linkage cannot be exported">; def err_export_not_in_module_interface : Error< "export declaration can only be used within a module interface unit" "%select{ after the module declaration|}0">; def err_export_in_private_module_fragment : Error< "export declaration cannot be used in a private module fragment">; def note_private_module_fragment : Note< "private module fragment begins here">; def err_private_module_fragment_not_module : Error< "private module fragment declaration with no preceding module declaration">; def err_private_module_fragment_redefined : Error< "private module fragment redefined">; def err_private_module_fragment_not_module_interface : Error< "private module fragment in module implementation unit">; def note_not_module_interface_add_export : Note< "add 'export' here if this is intended to be a module interface unit">; def ext_equivalent_internal_linkage_decl_in_modules : ExtWarn< "ambiguous use of internal linkage declaration %0 defined in multiple modules">, InGroup>; def note_equivalent_internal_linkage_decl : Note< "declared here%select{ in module '%1'|}0">; def note_redefinition_modules_same_file : Note< "'%0' included multiple times, additional include site in header from module '%1'">; def note_redefinition_include_same_file : Note< "'%0' included multiple times, additional include site here">; } let CategoryName = "Coroutines Issue" in { def err_return_in_coroutine : Error< "return statement not allowed in coroutine; did you mean 'co_return'?">; def note_declared_coroutine_here : Note< "function is a coroutine due to use of '%0' here">; def err_coroutine_objc_method : Error< "Objective-C methods as coroutines are not yet supported">; def err_coroutine_unevaluated_context : Error< "'%0' cannot be used in an unevaluated context">; def err_coroutine_within_handler : Error< "'%0' cannot be used in the handler of a try block">; def err_coroutine_outside_function : Error< "'%0' cannot be used outside a function">; def err_coroutine_invalid_func_context : Error< "'%1' cannot be used in %select{a constructor|a destructor" "|the 'main' function|a constexpr function" "|a function with a deduced return type|a varargs function" "|a consteval function}0">; def err_implied_coroutine_type_not_found : Error< "%0 type was not found; include before defining " "a coroutine">; def err_implicit_coroutine_std_nothrow_type_not_found : Error< "std::nothrow was not found; include before defining a coroutine which " "uses get_return_object_on_allocation_failure()">; def err_malformed_std_nothrow : Error< "std::nothrow must be a valid variable declaration">; def err_malformed_std_coroutine_handle : Error< "std::experimental::coroutine_handle must be a class template">; def err_coroutine_handle_missing_member : Error< "std::experimental::coroutine_handle missing a member named '%0'">; def err_malformed_std_coroutine_traits : Error< "'std::experimental::coroutine_traits' must be a class template">; def err_implied_std_coroutine_traits_promise_type_not_found : Error< "this function cannot be a coroutine: %q0 has no member named 'promise_type'">; def err_implied_std_coroutine_traits_promise_type_not_class : Error< "this function cannot be a coroutine: %0 is not a class">; def err_coroutine_promise_type_incomplete : Error< "this function cannot be a coroutine: %0 is an incomplete type">; def err_coroutine_type_missing_specialization : Error< "this function cannot be a coroutine: missing definition of " "specialization %0">; def err_coroutine_promise_incompatible_return_functions : Error< "the coroutine promise type %0 declares both 'return_value' and 'return_void'">; def err_coroutine_promise_requires_return_function : Error< "the coroutine promise type %0 must declare either 'return_value' or 'return_void'">; def note_coroutine_promise_implicit_await_transform_required_here : Note< "call to 'await_transform' implicitly required by 'co_await' here">; def note_coroutine_promise_suspend_implicitly_required : Note< "call to '%select{initial_suspend|final_suspend}0' implicitly " "required by the %select{initial suspend point|final suspend point}0">; def err_coroutine_promise_unhandled_exception_required : Error< "%0 is required to declare the member 'unhandled_exception()'">; def warn_coroutine_promise_unhandled_exception_required_with_exceptions : Warning< "%0 is required to declare the member 'unhandled_exception()' when exceptions are enabled">, InGroup; def err_coroutine_promise_get_return_object_on_allocation_failure : Error< "%0: 'get_return_object_on_allocation_failure()' must be a static member function">; def err_seh_in_a_coroutine_with_cxx_exceptions : Error< "cannot use SEH '__try' in a coroutine when C++ exceptions are enabled">; def err_coroutine_promise_new_requires_nothrow : Error< "%0 is required to have a non-throwing noexcept specification when the promise " "type declares 'get_return_object_on_allocation_failure()'">; def note_coroutine_promise_call_implicitly_required : Note< "call to %0 implicitly required by coroutine function here">; def err_await_suspend_invalid_return_type : Error< "return type of 'await_suspend' is required to be 'void' or 'bool' (have %0)" >; def note_await_ready_no_bool_conversion : Note< "return type of 'await_ready' is required to be contextually convertible to 'bool'" >; def warn_coroutine_handle_address_invalid_return_type : Warning < "return type of 'coroutine_handle<>::address should be 'void*' (have %0) in order to get capability with existing async C API.">, InGroup; def err_coroutine_promise_final_suspend_requires_nothrow : Error< "the expression 'co_await __promise.final_suspend()' is required to be non-throwing" >; def note_coroutine_function_declare_noexcept : Note< "must be declared with 'noexcept'" >; } // end of coroutines issue category let CategoryName = "Documentation Issue" in { def warn_not_a_doxygen_trailing_member_comment : Warning< "not a Doxygen trailing comment">, InGroup, DefaultIgnore; } // end of documentation issue category let CategoryName = "Nullability Issue" in { def warn_mismatched_nullability_attr : Warning< "nullability specifier %0 conflicts with existing specifier %1">, InGroup; def warn_nullability_declspec : Warning< "nullability specifier %0 cannot be applied " "to non-pointer type %1; did you mean to apply the specifier to the " "%select{pointer|block pointer|member pointer|function pointer|" "member function pointer}2?">, InGroup, DefaultError; def note_nullability_here : Note<"%0 specified here">; def err_nullability_nonpointer : Error< "nullability specifier %0 cannot be applied to non-pointer type %1">; def warn_nullability_lost : Warning< "implicit conversion from nullable pointer %0 to non-nullable pointer " "type %1">, InGroup, DefaultIgnore; def warn_zero_as_null_pointer_constant : Warning< "zero as null pointer constant">, InGroup>, DefaultIgnore; def err_nullability_cs_multilevel : Error< "nullability keyword %0 cannot be applied to multi-level pointer type %1">; def note_nullability_type_specifier : Note< "use nullability type specifier %0 to affect the innermost " "pointer type of %1">; def warn_null_resettable_setter : Warning< "synthesized setter %0 for null_resettable property %1 does not handle nil">, InGroup; def warn_nullability_missing : Warning< "%select{pointer|block pointer|member pointer}0 is missing a nullability " "type specifier (_Nonnull, _Nullable, or _Null_unspecified)">, InGroup; def warn_nullability_missing_array : Warning< "array parameter is missing a nullability type specifier (_Nonnull, " "_Nullable, or _Null_unspecified)">, InGroup; def note_nullability_fix_it : Note< "insert '%select{_Nonnull|_Nullable|_Null_unspecified}0' if the " "%select{pointer|block pointer|member pointer|array parameter}1 " "%select{should never be null|may be null|should not declare nullability}0">; def warn_nullability_inferred_on_nested_type : Warning< "inferring '_Nonnull' for pointer type within %select{array|reference}0 is " "deprecated">, InGroup; def err_objc_type_arg_explicit_nullability : Error< "type argument %0 cannot explicitly specify nullability">; def err_objc_type_param_bound_explicit_nullability : Error< "type parameter %0 bound %1 cannot explicitly specify nullability">; } let CategoryName = "Generics Issue" in { def err_objc_type_param_bound_nonobject : Error< "type bound %0 for type parameter %1 is not an Objective-C pointer type">; def err_objc_type_param_bound_missing_pointer : Error< "missing '*' in type bound %0 for type parameter %1">; def err_objc_type_param_bound_qualified : Error< "type bound %1 for type parameter %0 cannot be qualified with '%2'">; def err_objc_type_param_redecl : Error< "redeclaration of type parameter %0">; def err_objc_type_param_arity_mismatch : Error< "%select{forward class declaration|class definition|category|extension}0 has " "too %select{few|many}1 type parameters (expected %2, have %3)">; def err_objc_type_param_bound_conflict : Error< "type bound %0 for type parameter %1 conflicts with " "%select{implicit|previous}2 bound %3%select{for type parameter %5|}4">; def err_objc_type_param_variance_conflict : Error< "%select{in|co|contra}0variant type parameter %1 conflicts with previous " "%select{in|co|contra}2variant type parameter %3">; def note_objc_type_param_here : Note<"type parameter %0 declared here">; def err_objc_type_param_bound_missing : Error< "missing type bound %0 for type parameter %1 in %select{@interface|@class}2">; def err_objc_parameterized_category_nonclass : Error< "%select{extension|category}0 of non-parameterized class %1 cannot have type " "parameters">; def err_objc_parameterized_forward_class : Error< "forward declaration of non-parameterized class %0 cannot have type " "parameters">; def err_objc_parameterized_forward_class_first : Error< "class %0 previously declared with type parameters">; def err_objc_type_arg_missing_star : Error< "type argument %0 must be a pointer (requires a '*')">; def err_objc_type_arg_qualified : Error< "type argument %0 cannot be qualified with '%1'">; def err_objc_type_arg_missing : Error< "no type or protocol named %0">; def err_objc_type_args_and_protocols : Error< "angle brackets contain both a %select{type|protocol}0 (%1) and a " "%select{protocol|type}0 (%2)">; def err_objc_type_args_non_class : Error< "type arguments cannot be applied to non-class type %0">; def err_objc_type_args_non_parameterized_class : Error< "type arguments cannot be applied to non-parameterized class %0">; def err_objc_type_args_specialized_class : Error< "type arguments cannot be applied to already-specialized class type %0">; def err_objc_type_args_wrong_arity : Error< "too %select{many|few}0 type arguments for class %1 (have %2, expected %3)">; } def err_objc_type_arg_not_id_compatible : Error< "type argument %0 is neither an Objective-C object nor a block type">; def err_objc_type_arg_does_not_match_bound : Error< "type argument %0 does not satisfy the bound (%1) of type parameter %2">; def warn_objc_redundant_qualified_class_type : Warning< "parameterized class %0 already conforms to the protocols listed; did you " "forget a '*'?">, InGroup; def warn_block_literal_attributes_on_omitted_return_type : Warning< "attribute %0 ignored, because it cannot be applied to omitted return type">, InGroup; def warn_block_literal_qualifiers_on_omitted_return_type : Warning< "'%0' qualifier on omitted return type %1 has no effect">, InGroup; def warn_shadow_field : Warning< "%select{parameter|non-static data member}3 %0 %select{|of %1 }3shadows " "member inherited from type %2">, InGroup, DefaultIgnore; def note_shadow_field : Note<"declared here">; def err_multiversion_required_in_redecl : Error< "function declaration is missing %select{'target'|'cpu_specific' or " "'cpu_dispatch'}0 attribute in a multiversioned function">; def note_multiversioning_caused_here : Note< "function multiversioning caused by this declaration">; def err_multiversion_after_used : Error< "function declaration cannot become a multiversioned function after first " "usage">; def err_bad_multiversion_option : Error< "function multiversioning doesn't support %select{feature|architecture}0 " "'%1'">; def err_multiversion_duplicate : Error< "multiversioned function redeclarations require identical target attributes">; def err_multiversion_noproto : Error< "multiversioned function must have a prototype">; def err_multiversion_disallowed_other_attr : Error< "attribute '%select{target|cpu_specific|cpu_dispatch}0' multiversioning cannot be combined" " with attribute %1">; def err_multiversion_mismatched_attrs : Error<"attributes on multiversioned functions must all match, attribute " "%0 %select{is missing|has different arguments}1">; def err_multiversion_diff : Error< "multiversioned function declaration has a different %select{calling convention" "|return type|constexpr specification|inline specification|storage class|" "linkage}0">; def err_multiversion_doesnt_support : Error< "attribute '%select{target|cpu_specific|cpu_dispatch}0' multiversioned functions do not " "yet support %select{function templates|virtual functions|" "deduced return types|constructors|destructors|deleted functions|" "defaulted functions|constexpr functions|consteval function}1">; def err_multiversion_not_allowed_on_main : Error< "'main' cannot be a multiversioned function">; def err_multiversion_not_supported : Error< "function multiversioning is not supported on the current target">; def err_multiversion_types_mixed : Error< "multiversioning attributes cannot be combined">; def err_cpu_dispatch_mismatch : Error< "'cpu_dispatch' function redeclared with different CPUs">; def err_cpu_specific_multiple_defs : Error< "multiple 'cpu_specific' functions cannot specify the same CPU: %0">; def warn_multiversion_duplicate_entries : Warning< "CPU list contains duplicate entries; attribute ignored">, InGroup; def warn_dispatch_body_ignored : Warning< "body of cpu_dispatch function will be ignored">, InGroup; // three-way comparison operator diagnostics def err_implied_comparison_category_type_not_found : Error< "cannot %select{use builtin operator '<=>'|default 'operator<=>'}1 " "because type '%0' was not found; include ">; def err_spaceship_argument_narrowing : Error< "argument to 'operator<=>' " "%select{cannot be narrowed from type %1 to %2|" "evaluates to %1, which cannot be narrowed to type %2}0">; def err_std_compare_type_not_supported : Error< "standard library implementation of %0 is not supported; " "%select{member '%2' does not have expected form|" "member '%2' is missing|" "the type is not trivially copyable|" "the type does not have the expected form}1">; def note_rewriting_operator_as_spaceship : Note< "while rewriting comparison as call to 'operator<=>' declared here">; def err_three_way_vector_comparison : Error< "three-way comparison between vectors is not supported">; // Memory Tagging Extensions (MTE) diagnostics def err_memtag_arg_null_or_pointer : Error< "%0 argument of MTE builtin function must be a null or a pointer (%1 invalid)">; def err_memtag_any2arg_pointer : Error< "at least one argument of MTE builtin function must be a pointer (%0, %1 invalid)">; def err_memtag_arg_must_be_pointer : Error< "%0 argument of MTE builtin function must be a pointer (%1 invalid)">; def err_memtag_arg_must_be_integer : Error< "%0 argument of MTE builtin function must be an integer type (%1 invalid)">; def warn_dereference_of_noderef_type : Warning< "dereferencing %0; was declared with a 'noderef' type">, InGroup; def warn_dereference_of_noderef_type_no_decl : Warning< "dereferencing expression marked as 'noderef'">, InGroup; def warn_noderef_on_non_pointer_or_array : Warning< "'noderef' can only be used on an array or pointer type">, InGroup; def warn_noderef_to_dereferenceable_pointer : Warning< "casting to dereferenceable pointer removes 'noderef' attribute">, InGroup; def err_builtin_launder_invalid_arg : Error< "%select{non-pointer|function pointer|void pointer}0 argument to " "'__builtin_launder' is not allowed">; def err_builtin_matrix_disabled: Error< "matrix types extension is disabled. Pass -fenable-matrix to enable it">; def err_matrix_index_not_integer: Error< "matrix %select{row|column}0 index is not an integer">; def err_matrix_index_outside_range: Error< "matrix %select{row|column}0 index is outside the allowed range [0, %1)">; def err_matrix_incomplete_index: Error< "single subscript expressions are not allowed for matrix values">; def err_matrix_separate_incomplete_index: Error< "matrix row and column subscripts cannot be separated by any expression">; def err_matrix_subscript_comma: Error< "comma expressions are not allowed as indices in matrix subscript expressions">; def err_builtin_matrix_arg: Error<"1st argument must be a matrix">; def err_builtin_matrix_scalar_unsigned_arg: Error< "%0 argument must be a constant unsigned integer expression">; def err_builtin_matrix_pointer_arg: Error< "%ordinal0 argument must be a pointer to a valid matrix element type">; def err_builtin_matrix_pointer_arg_mismatch: Error< "the pointee of the 2nd argument must match the element type of the 1st argument (%0 != %1)">; def err_builtin_matrix_store_to_const: Error< "cannot store matrix to read-only pointer">; def err_builtin_matrix_stride_too_small: Error< "stride must be greater or equal to the number of rows">; def err_builtin_matrix_invalid_dimension: Error< "%0 dimension is outside the allowed range [1, %1]">; def warn_mismatched_import : Warning< "import %select{module|name}0 (%1) does not match the import %select{module|name}0 (%2) of the " "previous declaration">, InGroup; def warn_import_on_definition : Warning< "import %select{module|name}0 cannot be applied to a function with a definition">, InGroup; def err_preserve_field_info_not_field : Error< "__builtin_preserve_field_info argument %0 not a field access">; def err_preserve_field_info_not_const: Error< "__builtin_preserve_field_info argument %0 not a constant">; def err_btf_type_id_not_const: Error< "__builtin_btf_type_id argument %0 not a constant">; def err_preserve_type_info_invalid : Error< "__builtin_preserve_type_info argument %0 invalid">; def err_preserve_type_info_not_const: Error< "__builtin_preserve_type_info argument %0 not a constant">; def err_preserve_enum_value_invalid : Error< "__builtin_preserve_enum_value argument %0 invalid">; def err_preserve_enum_value_not_const: Error< "__builtin_preserve_enum_value argument %0 not a constant">; def err_bit_cast_non_trivially_copyable : Error< "__builtin_bit_cast %select{source|destination}0 type must be trivially copyable">; def err_bit_cast_type_size_mismatch : Error< "__builtin_bit_cast source size does not equal destination size (%0 vs %1)">; // SYCL-specific diagnostics def warn_sycl_kernel_num_of_template_params : Warning< "'sycl_kernel' attribute only applies to a function template with at least" " two template parameters">, InGroup; def warn_sycl_kernel_invalid_template_param_type : Warning< "template parameter of a function template with the 'sycl_kernel' attribute" " cannot be a non-type template parameter">, InGroup; def warn_sycl_kernel_num_of_function_params : Warning< "function template with 'sycl_kernel' attribute must have a single parameter">, InGroup; def warn_sycl_kernel_return_type : Warning< "function template with 'sycl_kernel' attribute must have a 'void' return type">, InGroup; def err_ext_int_bad_size : Error<"%select{signed|unsigned}0 _ExtInt must " "have a bit size of at least %select{2|1}0">; def err_ext_int_max_size : Error<"%select{signed|unsigned}0 _ExtInt of bit " "sizes greater than %1 not supported">; // errors of expect.with.probability def err_probability_not_constant_float : Error< "probability argument to __builtin_expect_with_probability must be constant " "floating-point expression">; def err_probability_out_of_range : Error< "probability argument to __builtin_expect_with_probability is outside the " "range [0.0, 1.0]">; // TCB warnings def err_tcb_conflicting_attributes : Error< "attributes '%0(\"%2\")' and '%1(\"%2\")' are mutually exclusive">; def warn_tcb_enforcement_violation : Warning< "calling %0 is a violation of trusted computing base '%1'">, InGroup>; } // end of sema component. diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp index da555c95eaf0..571c4fb091ab 100644 --- a/clang/lib/Sema/SemaExpr.cpp +++ b/clang/lib/Sema/SemaExpr.cpp @@ -1,19434 +1,19444 @@ //===--- SemaExpr.cpp - Semantic Analysis for Expressions -----------------===// // // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. // See https://llvm.org/LICENSE.txt for license information. // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception // //===----------------------------------------------------------------------===// // // This file implements semantic analysis for expressions. // //===----------------------------------------------------------------------===// #include "TreeTransform.h" #include "UsedDeclVisitor.h" #include "clang/AST/ASTConsumer.h" #include "clang/AST/ASTContext.h" #include "clang/AST/ASTLambda.h" #include "clang/AST/ASTMutationListener.h" #include "clang/AST/CXXInheritance.h" #include "clang/AST/DeclObjC.h" #include "clang/AST/DeclTemplate.h" #include "clang/AST/EvaluatedExprVisitor.h" #include "clang/AST/Expr.h" #include "clang/AST/ExprCXX.h" #include "clang/AST/ExprObjC.h" #include "clang/AST/ExprOpenMP.h" #include "clang/AST/OperationKinds.h" #include "clang/AST/RecursiveASTVisitor.h" #include "clang/AST/TypeLoc.h" #include "clang/Basic/Builtins.h" #include "clang/Basic/PartialDiagnostic.h" #include "clang/Basic/SourceManager.h" #include "clang/Basic/TargetInfo.h" #include "clang/Lex/LiteralSupport.h" #include "clang/Lex/Preprocessor.h" #include "clang/Sema/AnalysisBasedWarnings.h" #include "clang/Sema/DeclSpec.h" #include "clang/Sema/DelayedDiagnostic.h" #include "clang/Sema/Designator.h" #include "clang/Sema/Initialization.h" #include "clang/Sema/Lookup.h" #include "clang/Sema/Overload.h" #include "clang/Sema/ParsedTemplate.h" #include "clang/Sema/Scope.h" #include "clang/Sema/ScopeInfo.h" #include "clang/Sema/SemaFixItUtils.h" #include "clang/Sema/SemaInternal.h" #include "clang/Sema/Template.h" #include "llvm/Support/ConvertUTF.h" #include "llvm/Support/SaveAndRestore.h" using namespace clang; using namespace sema; using llvm::RoundingMode; /// Determine whether the use of this declaration is valid, without /// emitting diagnostics. bool Sema::CanUseDecl(NamedDecl *D, bool TreatUnavailableAsInvalid) { // See if this is an auto-typed variable whose initializer we are parsing. if (ParsingInitForAutoVars.count(D)) return false; // See if this is a deleted function. if (FunctionDecl *FD = dyn_cast(D)) { if (FD->isDeleted()) return false; // If the function has a deduced return type, and we can't deduce it, // then we can't use it either. if (getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && DeduceReturnType(FD, SourceLocation(), /*Diagnose*/ false)) return false; // See if this is an aligned allocation/deallocation function that is // unavailable. if (TreatUnavailableAsInvalid && isUnavailableAlignedAllocationFunction(*FD)) return false; } // See if this function is unavailable. if (TreatUnavailableAsInvalid && D->getAvailability() == AR_Unavailable && cast(CurContext)->getAvailability() != AR_Unavailable) return false; return true; } static void DiagnoseUnusedOfDecl(Sema &S, NamedDecl *D, SourceLocation Loc) { // Warn if this is used but marked unused. if (const auto *A = D->getAttr()) { // [[maybe_unused]] should not diagnose uses, but __attribute__((unused)) // should diagnose them. if (A->getSemanticSpelling() != UnusedAttr::CXX11_maybe_unused && A->getSemanticSpelling() != UnusedAttr::C2x_maybe_unused) { const Decl *DC = cast_or_null(S.getCurObjCLexicalContext()); if (DC && !DC->hasAttr()) S.Diag(Loc, diag::warn_used_but_marked_unused) << D; } } } /// Emit a note explaining that this function is deleted. void Sema::NoteDeletedFunction(FunctionDecl *Decl) { assert(Decl && Decl->isDeleted()); if (Decl->isDefaulted()) { // If the method was explicitly defaulted, point at that declaration. if (!Decl->isImplicit()) Diag(Decl->getLocation(), diag::note_implicitly_deleted); // Try to diagnose why this special member function was implicitly // deleted. This might fail, if that reason no longer applies. DiagnoseDeletedDefaultedFunction(Decl); return; } auto *Ctor = dyn_cast(Decl); if (Ctor && Ctor->isInheritingConstructor()) return NoteDeletedInheritingConstructor(Ctor); Diag(Decl->getLocation(), diag::note_availability_specified_here) << Decl << 1; } /// Determine whether a FunctionDecl was ever declared with an /// explicit storage class. static bool hasAnyExplicitStorageClass(const FunctionDecl *D) { for (auto I : D->redecls()) { if (I->getStorageClass() != SC_None) return true; } return false; } /// Check whether we're in an extern inline function and referring to a /// variable or function with internal linkage (C11 6.7.4p3). /// /// This is only a warning because we used to silently accept this code, but /// in many cases it will not behave correctly. This is not enabled in C++ mode /// because the restriction language is a bit weaker (C++11 [basic.def.odr]p6) /// and so while there may still be user mistakes, most of the time we can't /// prove that there are errors. static void diagnoseUseOfInternalDeclInInlineFunction(Sema &S, const NamedDecl *D, SourceLocation Loc) { // This is disabled under C++; there are too many ways for this to fire in // contexts where the warning is a false positive, or where it is technically // correct but benign. if (S.getLangOpts().CPlusPlus) return; // Check if this is an inlined function or method. FunctionDecl *Current = S.getCurFunctionDecl(); if (!Current) return; if (!Current->isInlined()) return; if (!Current->isExternallyVisible()) return; // Check if the decl has internal linkage. if (D->getFormalLinkage() != InternalLinkage) return; // Downgrade from ExtWarn to Extension if // (1) the supposedly external inline function is in the main file, // and probably won't be included anywhere else. // (2) the thing we're referencing is a pure function. // (3) the thing we're referencing is another inline function. // This last can give us false negatives, but it's better than warning on // wrappers for simple C library functions. const FunctionDecl *UsedFn = dyn_cast(D); bool DowngradeWarning = S.getSourceManager().isInMainFile(Loc); if (!DowngradeWarning && UsedFn) DowngradeWarning = UsedFn->isInlined() || UsedFn->hasAttr(); S.Diag(Loc, DowngradeWarning ? diag::ext_internal_in_extern_inline_quiet : diag::ext_internal_in_extern_inline) << /*IsVar=*/!UsedFn << D; S.MaybeSuggestAddingStaticToDecl(Current); S.Diag(D->getCanonicalDecl()->getLocation(), diag::note_entity_declared_at) << D; } void Sema::MaybeSuggestAddingStaticToDecl(const FunctionDecl *Cur) { const FunctionDecl *First = Cur->getFirstDecl(); // Suggest "static" on the function, if possible. if (!hasAnyExplicitStorageClass(First)) { SourceLocation DeclBegin = First->getSourceRange().getBegin(); Diag(DeclBegin, diag::note_convert_inline_to_static) << Cur << FixItHint::CreateInsertion(DeclBegin, "static "); } } /// Determine whether the use of this declaration is valid, and /// emit any corresponding diagnostics. /// /// This routine diagnoses various problems with referencing /// declarations that can occur when using a declaration. For example, /// it might warn if a deprecated or unavailable declaration is being /// used, or produce an error (and return true) if a C++0x deleted /// function is being used. /// /// \returns true if there was an error (this declaration cannot be /// referenced), false otherwise. /// bool Sema::DiagnoseUseOfDecl(NamedDecl *D, ArrayRef Locs, const ObjCInterfaceDecl *UnknownObjCClass, bool ObjCPropertyAccess, bool AvoidPartialAvailabilityChecks, ObjCInterfaceDecl *ClassReceiver) { SourceLocation Loc = Locs.front(); if (getLangOpts().CPlusPlus && isa(D)) { // If there were any diagnostics suppressed by template argument deduction, // emit them now. auto Pos = SuppressedDiagnostics.find(D->getCanonicalDecl()); if (Pos != SuppressedDiagnostics.end()) { for (const PartialDiagnosticAt &Suppressed : Pos->second) Diag(Suppressed.first, Suppressed.second); // Clear out the list of suppressed diagnostics, so that we don't emit // them again for this specialization. However, we don't obsolete this // entry from the table, because we want to avoid ever emitting these // diagnostics again. Pos->second.clear(); } // C++ [basic.start.main]p3: // The function 'main' shall not be used within a program. if (cast(D)->isMain()) Diag(Loc, diag::ext_main_used); diagnoseUnavailableAlignedAllocation(*cast(D), Loc); } // See if this is an auto-typed variable whose initializer we are parsing. if (ParsingInitForAutoVars.count(D)) { if (isa(D)) { Diag(Loc, diag::err_binding_cannot_appear_in_own_initializer) << D->getDeclName(); } else { Diag(Loc, diag::err_auto_variable_cannot_appear_in_own_initializer) << D->getDeclName() << cast(D)->getType(); } return true; } if (FunctionDecl *FD = dyn_cast(D)) { // See if this is a deleted function. if (FD->isDeleted()) { auto *Ctor = dyn_cast(FD); if (Ctor && Ctor->isInheritingConstructor()) Diag(Loc, diag::err_deleted_inherited_ctor_use) << Ctor->getParent() << Ctor->getInheritedConstructor().getConstructor()->getParent(); else Diag(Loc, diag::err_deleted_function_use); NoteDeletedFunction(FD); return true; } // [expr.prim.id]p4 // A program that refers explicitly or implicitly to a function with a // trailing requires-clause whose constraint-expression is not satisfied, // other than to declare it, is ill-formed. [...] // // See if this is a function with constraints that need to be satisfied. // Check this before deducing the return type, as it might instantiate the // definition. if (FD->getTrailingRequiresClause()) { ConstraintSatisfaction Satisfaction; if (CheckFunctionConstraints(FD, Satisfaction, Loc)) // A diagnostic will have already been generated (non-constant // constraint expression, for example) return true; if (!Satisfaction.IsSatisfied) { Diag(Loc, diag::err_reference_to_function_with_unsatisfied_constraints) << D; DiagnoseUnsatisfiedConstraint(Satisfaction); return true; } } // If the function has a deduced return type, and we can't deduce it, // then we can't use it either. if (getLangOpts().CPlusPlus14 && FD->getReturnType()->isUndeducedType() && DeduceReturnType(FD, Loc)) return true; if (getLangOpts().CUDA && !CheckCUDACall(Loc, FD)) return true; if (getLangOpts().SYCLIsDevice && !checkSYCLDeviceFunction(Loc, FD)) return true; } if (auto *MD = dyn_cast(D)) { // Lambdas are only default-constructible or assignable in C++2a onwards. if (MD->getParent()->isLambda() && ((isa(MD) && cast(MD)->isDefaultConstructor()) || MD->isCopyAssignmentOperator() || MD->isMoveAssignmentOperator())) { Diag(Loc, diag::warn_cxx17_compat_lambda_def_ctor_assign) << !isa(MD); } } auto getReferencedObjCProp = [](const NamedDecl *D) -> const ObjCPropertyDecl * { if (const auto *MD = dyn_cast(D)) return MD->findPropertyDecl(); return nullptr; }; if (const ObjCPropertyDecl *ObjCPDecl = getReferencedObjCProp(D)) { if (diagnoseArgIndependentDiagnoseIfAttrs(ObjCPDecl, Loc)) return true; } else if (diagnoseArgIndependentDiagnoseIfAttrs(D, Loc)) { return true; } // [OpenMP 4.0], 2.15 declare reduction Directive, Restrictions // Only the variables omp_in and omp_out are allowed in the combiner. // Only the variables omp_priv and omp_orig are allowed in the // initializer-clause. auto *DRD = dyn_cast(CurContext); if (LangOpts.OpenMP && DRD && !CurContext->containsDecl(D) && isa(D)) { Diag(Loc, diag::err_omp_wrong_var_in_declare_reduction) << getCurFunction()->HasOMPDeclareReductionCombiner; Diag(D->getLocation(), diag::note_entity_declared_at) << D; return true; } // [OpenMP 5.0], 2.19.7.3. declare mapper Directive, Restrictions // List-items in map clauses on this construct may only refer to the declared // variable var and entities that could be referenced by a procedure defined // at the same location if (LangOpts.OpenMP && isa(D) && !isOpenMPDeclareMapperVarDeclAllowed(cast(D))) { Diag(Loc, diag::err_omp_declare_mapper_wrong_var) << getOpenMPDeclareMapperVarName(); Diag(D->getLocation(), diag::note_entity_declared_at) << D; return true; } DiagnoseAvailabilityOfDecl(D, Locs, UnknownObjCClass, ObjCPropertyAccess, AvoidPartialAvailabilityChecks, ClassReceiver); DiagnoseUnusedOfDecl(*this, D, Loc); diagnoseUseOfInternalDeclInInlineFunction(*this, D, Loc); // CUDA/HIP: Diagnose invalid references of host global variables in device // functions. Reference of device global variables in host functions is // allowed through shadow variables therefore it is not diagnosed. if (LangOpts.CUDAIsDevice) { auto *FD = dyn_cast_or_null(CurContext); auto Target = IdentifyCUDATarget(FD); if (FD && Target != CFT_Host) { const auto *VD = dyn_cast(D); if (VD && VD->hasGlobalStorage() && !VD->hasAttr() && !VD->hasAttr() && !VD->hasAttr() && !VD->getType()->isCUDADeviceBuiltinSurfaceType() && !VD->getType()->isCUDADeviceBuiltinTextureType() && !VD->isConstexpr() && !VD->getType().isConstQualified()) targetDiag(*Locs.begin(), diag::err_ref_bad_target) << /*host*/ 2 << /*variable*/ 1 << VD << Target; } } if (LangOpts.SYCLIsDevice || (LangOpts.OpenMP && LangOpts.OpenMPIsDevice)) { if (const auto *VD = dyn_cast(D)) checkDeviceDecl(VD, Loc); if (!Context.getTargetInfo().isTLSSupported()) if (const auto *VD = dyn_cast(D)) if (VD->getTLSKind() != VarDecl::TLS_None) targetDiag(*Locs.begin(), diag::err_thread_unsupported); } if (isa(D) && isa(D->getDeclContext()) && !isUnevaluatedContext()) { // C++ [expr.prim.req.nested] p3 // A local parameter shall only appear as an unevaluated operand // (Clause 8) within the constraint-expression. Diag(Loc, diag::err_requires_expr_parameter_referenced_in_evaluated_context) << D; Diag(D->getLocation(), diag::note_entity_declared_at) << D; return true; } return false; } /// DiagnoseSentinelCalls - This routine checks whether a call or /// message-send is to a declaration with the sentinel attribute, and /// if so, it checks that the requirements of the sentinel are /// satisfied. void Sema::DiagnoseSentinelCalls(NamedDecl *D, SourceLocation Loc, ArrayRef Args) { const SentinelAttr *attr = D->getAttr(); if (!attr) return; // The number of formal parameters of the declaration. unsigned numFormalParams; // The kind of declaration. This is also an index into a %select in // the diagnostic. enum CalleeType { CT_Function, CT_Method, CT_Block } calleeType; if (ObjCMethodDecl *MD = dyn_cast(D)) { numFormalParams = MD->param_size(); calleeType = CT_Method; } else if (FunctionDecl *FD = dyn_cast(D)) { numFormalParams = FD->param_size(); calleeType = CT_Function; } else if (isa(D)) { QualType type = cast(D)->getType(); const FunctionType *fn = nullptr; if (const PointerType *ptr = type->getAs()) { fn = ptr->getPointeeType()->getAs(); if (!fn) return; calleeType = CT_Function; } else if (const BlockPointerType *ptr = type->getAs()) { fn = ptr->getPointeeType()->castAs(); calleeType = CT_Block; } else { return; } if (const FunctionProtoType *proto = dyn_cast(fn)) { numFormalParams = proto->getNumParams(); } else { numFormalParams = 0; } } else { return; } // "nullPos" is the number of formal parameters at the end which // effectively count as part of the variadic arguments. This is // useful if you would prefer to not have *any* formal parameters, // but the language forces you to have at least one. unsigned nullPos = attr->getNullPos(); assert((nullPos == 0 || nullPos == 1) && "invalid null position on sentinel"); numFormalParams = (nullPos > numFormalParams ? 0 : numFormalParams - nullPos); // The number of arguments which should follow the sentinel. unsigned numArgsAfterSentinel = attr->getSentinel(); // If there aren't enough arguments for all the formal parameters, // the sentinel, and the args after the sentinel, complain. if (Args.size() < numFormalParams + numArgsAfterSentinel + 1) { Diag(Loc, diag::warn_not_enough_argument) << D->getDeclName(); Diag(D->getLocation(), diag::note_sentinel_here) << int(calleeType); return; } // Otherwise, find the sentinel expression. Expr *sentinelExpr = Args[Args.size() - numArgsAfterSentinel - 1]; if (!sentinelExpr) return; if (sentinelExpr->isValueDependent()) return; if (Context.isSentinelNullExpr(sentinelExpr)) return; // Pick a reasonable string to insert. Optimistically use 'nil', 'nullptr', // or 'NULL' if those are actually defined in the context. Only use // 'nil' for ObjC methods, where it's much more likely that the // variadic arguments form a list of object pointers. SourceLocation MissingNilLoc = getLocForEndOfToken(sentinelExpr->getEndLoc()); std::string NullValue; if (calleeType == CT_Method && PP.isMacroDefined("nil")) NullValue = "nil"; else if (getLangOpts().CPlusPlus11) NullValue = "nullptr"; else if (PP.isMacroDefined("NULL")) NullValue = "NULL"; else NullValue = "(void*) 0"; if (MissingNilLoc.isInvalid()) Diag(Loc, diag::warn_missing_sentinel) << int(calleeType); else Diag(MissingNilLoc, diag::warn_missing_sentinel) << int(calleeType) << FixItHint::CreateInsertion(MissingNilLoc, ", " + NullValue); Diag(D->getLocation(), diag::note_sentinel_here) << int(calleeType); } SourceRange Sema::getExprRange(Expr *E) const { return E ? E->getSourceRange() : SourceRange(); } //===----------------------------------------------------------------------===// // Standard Promotions and Conversions //===----------------------------------------------------------------------===// /// DefaultFunctionArrayConversion (C99 6.3.2.1p3, C99 6.3.2.1p4). ExprResult Sema::DefaultFunctionArrayConversion(Expr *E, bool Diagnose) { // Handle any placeholder expressions which made it here. if (E->getType()->isPlaceholderType()) { ExprResult result = CheckPlaceholderExpr(E); if (result.isInvalid()) return ExprError(); E = result.get(); } QualType Ty = E->getType(); assert(!Ty.isNull() && "DefaultFunctionArrayConversion - missing type"); if (Ty->isFunctionType()) { if (auto *DRE = dyn_cast(E->IgnoreParenCasts())) if (auto *FD = dyn_cast(DRE->getDecl())) if (!checkAddressOfFunctionIsAvailable(FD, Diagnose, E->getExprLoc())) return ExprError(); E = ImpCastExprToType(E, Context.getPointerType(Ty), CK_FunctionToPointerDecay).get(); } else if (Ty->isArrayType()) { // In C90 mode, arrays only promote to pointers if the array expression is // an lvalue. The relevant legalese is C90 6.2.2.1p3: "an lvalue that has // type 'array of type' is converted to an expression that has type 'pointer // to type'...". In C99 this was changed to: C99 6.3.2.1p3: "an expression // that has type 'array of type' ...". The relevant change is "an lvalue" // (C90) to "an expression" (C99). // // C++ 4.2p1: // An lvalue or rvalue of type "array of N T" or "array of unknown bound of // T" can be converted to an rvalue of type "pointer to T". // if (getLangOpts().C99 || getLangOpts().CPlusPlus || E->isLValue()) E = ImpCastExprToType(E, Context.getArrayDecayedType(Ty), CK_ArrayToPointerDecay).get(); } return E; } static void CheckForNullPointerDereference(Sema &S, Expr *E) { // Check to see if we are dereferencing a null pointer. If so, // and if not volatile-qualified, this is undefined behavior that the // optimizer will delete, so warn about it. People sometimes try to use this // to get a deterministic trap and are surprised by clang's behavior. This // only handles the pattern "*null", which is a very syntactic check. const auto *UO = dyn_cast(E->IgnoreParenCasts()); if (UO && UO->getOpcode() == UO_Deref && UO->getSubExpr()->getType()->isPointerType()) { const LangAS AS = UO->getSubExpr()->getType()->getPointeeType().getAddressSpace(); if ((!isTargetAddressSpace(AS) || (isTargetAddressSpace(AS) && toTargetAddressSpace(AS) == 0)) && UO->getSubExpr()->IgnoreParenCasts()->isNullPointerConstant( S.Context, Expr::NPC_ValueDependentIsNotNull) && !UO->getType().isVolatileQualified()) { S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, S.PDiag(diag::warn_indirection_through_null) << UO->getSubExpr()->getSourceRange()); S.DiagRuntimeBehavior(UO->getOperatorLoc(), UO, S.PDiag(diag::note_indirection_through_null)); } } } static void DiagnoseDirectIsaAccess(Sema &S, const ObjCIvarRefExpr *OIRE, SourceLocation AssignLoc, const Expr* RHS) { const ObjCIvarDecl *IV = OIRE->getDecl(); if (!IV) return; DeclarationName MemberName = IV->getDeclName(); IdentifierInfo *Member = MemberName.getAsIdentifierInfo(); if (!Member || !Member->isStr("isa")) return; const Expr *Base = OIRE->getBase(); QualType BaseType = Base->getType(); if (OIRE->isArrow()) BaseType = BaseType->getPointeeType(); if (const ObjCObjectType *OTy = BaseType->getAs()) if (ObjCInterfaceDecl *IDecl = OTy->getInterface()) { ObjCInterfaceDecl *ClassDeclared = nullptr; ObjCIvarDecl *IV = IDecl->lookupInstanceVariable(Member, ClassDeclared); if (!ClassDeclared->getSuperClass() && (*ClassDeclared->ivar_begin()) == IV) { if (RHS) { NamedDecl *ObjectSetClass = S.LookupSingleName(S.TUScope, &S.Context.Idents.get("object_setClass"), SourceLocation(), S.LookupOrdinaryName); if (ObjectSetClass) { SourceLocation RHSLocEnd = S.getLocForEndOfToken(RHS->getEndLoc()); S.Diag(OIRE->getExprLoc(), diag::warn_objc_isa_assign) << FixItHint::CreateInsertion(OIRE->getBeginLoc(), "object_setClass(") << FixItHint::CreateReplacement( SourceRange(OIRE->getOpLoc(), AssignLoc), ",") << FixItHint::CreateInsertion(RHSLocEnd, ")"); } else S.Diag(OIRE->getLocation(), diag::warn_objc_isa_assign); } else { NamedDecl *ObjectGetClass = S.LookupSingleName(S.TUScope, &S.Context.Idents.get("object_getClass"), SourceLocation(), S.LookupOrdinaryName); if (ObjectGetClass) S.Diag(OIRE->getExprLoc(), diag::warn_objc_isa_use) << FixItHint::CreateInsertion(OIRE->getBeginLoc(), "object_getClass(") << FixItHint::CreateReplacement( SourceRange(OIRE->getOpLoc(), OIRE->getEndLoc()), ")"); else S.Diag(OIRE->getLocation(), diag::warn_objc_isa_use); } S.Diag(IV->getLocation(), diag::note_ivar_decl); } } } ExprResult Sema::DefaultLvalueConversion(Expr *E) { // Handle any placeholder expressions which made it here. if (E->getType()->isPlaceholderType()) { ExprResult result = CheckPlaceholderExpr(E); if (result.isInvalid()) return ExprError(); E = result.get(); } // C++ [conv.lval]p1: // A glvalue of a non-function, non-array type T can be // converted to a prvalue. if (!E->isGLValue()) return E; QualType T = E->getType(); assert(!T.isNull() && "r-value conversion on typeless expression?"); // lvalue-to-rvalue conversion cannot be applied to function or array types. if (T->isFunctionType() || T->isArrayType()) return E; // We don't want to throw lvalue-to-rvalue casts on top of // expressions of certain types in C++. if (getLangOpts().CPlusPlus && (E->getType() == Context.OverloadTy || T->isDependentType() || T->isRecordType())) return E; // The C standard is actually really unclear on this point, and // DR106 tells us what the result should be but not why. It's // generally best to say that void types just doesn't undergo // lvalue-to-rvalue at all. Note that expressions of unqualified // 'void' type are never l-values, but qualified void can be. if (T->isVoidType()) return E; // OpenCL usually rejects direct accesses to values of 'half' type. if (getLangOpts().OpenCL && !getOpenCLOptions().isEnabled("cl_khr_fp16") && T->isHalfType()) { Diag(E->getExprLoc(), diag::err_opencl_half_load_store) << 0 << T; return ExprError(); } CheckForNullPointerDereference(*this, E); if (const ObjCIsaExpr *OISA = dyn_cast(E->IgnoreParenCasts())) { NamedDecl *ObjectGetClass = LookupSingleName(TUScope, &Context.Idents.get("object_getClass"), SourceLocation(), LookupOrdinaryName); if (ObjectGetClass) Diag(E->getExprLoc(), diag::warn_objc_isa_use) << FixItHint::CreateInsertion(OISA->getBeginLoc(), "object_getClass(") << FixItHint::CreateReplacement( SourceRange(OISA->getOpLoc(), OISA->getIsaMemberLoc()), ")"); else Diag(E->getExprLoc(), diag::warn_objc_isa_use); } else if (const ObjCIvarRefExpr *OIRE = dyn_cast(E->IgnoreParenCasts())) DiagnoseDirectIsaAccess(*this, OIRE, SourceLocation(), /* Expr*/nullptr); // C++ [conv.lval]p1: // [...] If T is a non-class type, the type of the prvalue is the // cv-unqualified version of T. Otherwise, the type of the // rvalue is T. // // C99 6.3.2.1p2: // If the lvalue has qualified type, the value has the unqualified // version of the type of the lvalue; otherwise, the value has the // type of the lvalue. if (T.hasQualifiers()) T = T.getUnqualifiedType(); // Under the MS ABI, lock down the inheritance model now. if (T->isMemberPointerType() && Context.getTargetInfo().getCXXABI().isMicrosoft()) (void)isCompleteType(E->getExprLoc(), T); ExprResult Res = CheckLValueToRValueConversionOperand(E); if (Res.isInvalid()) return Res; E = Res.get(); // Loading a __weak object implicitly retains the value, so we need a cleanup to // balance that. if (E->getType().getObjCLifetime() == Qualifiers::OCL_Weak) Cleanup.setExprNeedsCleanups(true); if (E->getType().isDestructedType() == QualType::DK_nontrivial_c_struct) Cleanup.setExprNeedsCleanups(true); // C++ [conv.lval]p3: // If T is cv std::nullptr_t, the result is a null pointer constant. CastKind CK = T->isNullPtrType() ? CK_NullToPointer : CK_LValueToRValue; Res = ImplicitCastExpr::Create(Context, T, CK, E, nullptr, VK_RValue, CurFPFeatureOverrides()); // C11 6.3.2.1p2: // ... if the lvalue has atomic type, the value has the non-atomic version // of the type of the lvalue ... if (const AtomicType *Atomic = T->getAs()) { T = Atomic->getValueType().getUnqualifiedType(); Res = ImplicitCastExpr::Create(Context, T, CK_AtomicToNonAtomic, Res.get(), nullptr, VK_RValue, FPOptionsOverride()); } return Res; } ExprResult Sema::DefaultFunctionArrayLvalueConversion(Expr *E, bool Diagnose) { ExprResult Res = DefaultFunctionArrayConversion(E, Diagnose); if (Res.isInvalid()) return ExprError(); Res = DefaultLvalueConversion(Res.get()); if (Res.isInvalid()) return ExprError(); return Res; } /// CallExprUnaryConversions - a special case of an unary conversion /// performed on a function designator of a call expression. ExprResult Sema::CallExprUnaryConversions(Expr *E) { QualType Ty = E->getType(); ExprResult Res = E; // Only do implicit cast for a function type, but not for a pointer // to function type. if (Ty->isFunctionType()) { Res = ImpCastExprToType(E, Context.getPointerType(Ty), CK_FunctionToPointerDecay); if (Res.isInvalid()) return ExprError(); } Res = DefaultLvalueConversion(Res.get()); if (Res.isInvalid()) return ExprError(); return Res.get(); } /// UsualUnaryConversions - Performs various conversions that are common to most /// operators (C99 6.3). The conversions of array and function types are /// sometimes suppressed. For example, the array->pointer conversion doesn't /// apply if the array is an argument to the sizeof or address (&) operators. /// In these instances, this routine should *not* be called. ExprResult Sema::UsualUnaryConversions(Expr *E) { // First, convert to an r-value. ExprResult Res = DefaultFunctionArrayLvalueConversion(E); if (Res.isInvalid()) return ExprError(); E = Res.get(); QualType Ty = E->getType(); assert(!Ty.isNull() && "UsualUnaryConversions - missing type"); // Half FP have to be promoted to float unless it is natively supported if (Ty->isHalfType() && !getLangOpts().NativeHalfType) return ImpCastExprToType(Res.get(), Context.FloatTy, CK_FloatingCast); // Try to perform integral promotions if the object has a theoretically // promotable type. if (Ty->isIntegralOrUnscopedEnumerationType()) { // C99 6.3.1.1p2: // // The following may be used in an expression wherever an int or // unsigned int may be used: // - an object or expression with an integer type whose integer // conversion rank is less than or equal to the rank of int // and unsigned int. // - A bit-field of type _Bool, int, signed int, or unsigned int. // // If an int can represent all values of the original type, the // value is converted to an int; otherwise, it is converted to an // unsigned int. These are called the integer promotions. All // other types are unchanged by the integer promotions. QualType PTy = Context.isPromotableBitField(E); if (!PTy.isNull()) { E = ImpCastExprToType(E, PTy, CK_IntegralCast).get(); return E; } if (Ty->isPromotableIntegerType()) { QualType PT = Context.getPromotedIntegerType(Ty); E = ImpCastExprToType(E, PT, CK_IntegralCast).get(); return E; } } return E; } /// DefaultArgumentPromotion (C99 6.5.2.2p6). Used for function calls that /// do not have a prototype. Arguments that have type float or __fp16 /// are promoted to double. All other argument types are converted by /// UsualUnaryConversions(). ExprResult Sema::DefaultArgumentPromotion(Expr *E) { QualType Ty = E->getType(); assert(!Ty.isNull() && "DefaultArgumentPromotion - missing type"); ExprResult Res = UsualUnaryConversions(E); if (Res.isInvalid()) return ExprError(); E = Res.get(); // If this is a 'float' or '__fp16' (CVR qualified or typedef) // promote to double. // Note that default argument promotion applies only to float (and // half/fp16); it does not apply to _Float16. const BuiltinType *BTy = Ty->getAs(); if (BTy && (BTy->getKind() == BuiltinType::Half || BTy->getKind() == BuiltinType::Float)) { if (getLangOpts().OpenCL && !getOpenCLOptions().isEnabled("cl_khr_fp64")) { if (BTy->getKind() == BuiltinType::Half) { E = ImpCastExprToType(E, Context.FloatTy, CK_FloatingCast).get(); } } else { E = ImpCastExprToType(E, Context.DoubleTy, CK_FloatingCast).get(); } } // C++ performs lvalue-to-rvalue conversion as a default argument // promotion, even on class types, but note: // C++11 [conv.lval]p2: // When an lvalue-to-rvalue conversion occurs in an unevaluated // operand or a subexpression thereof the value contained in the // referenced object is not accessed. Otherwise, if the glvalue // has a class type, the conversion copy-initializes a temporary // of type T from the glvalue and the result of the conversion // is a prvalue for the temporary. // FIXME: add some way to gate this entire thing for correctness in // potentially potentially evaluated contexts. if (getLangOpts().CPlusPlus && E->isGLValue() && !isUnevaluatedContext()) { ExprResult Temp = PerformCopyInitialization( InitializedEntity::InitializeTemporary(E->getType()), E->getExprLoc(), E); if (Temp.isInvalid()) return ExprError(); E = Temp.get(); } return E; } /// Determine the degree of POD-ness for an expression. /// Incomplete types are considered POD, since this check can be performed /// when we're in an unevaluated context. Sema::VarArgKind Sema::isValidVarArgType(const QualType &Ty) { if (Ty->isIncompleteType()) { // C++11 [expr.call]p7: // After these conversions, if the argument does not have arithmetic, // enumeration, pointer, pointer to member, or class type, the program // is ill-formed. // // Since we've already performed array-to-pointer and function-to-pointer // decay, the only such type in C++ is cv void. This also handles // initializer lists as variadic arguments. if (Ty->isVoidType()) return VAK_Invalid; if (Ty->isObjCObjectType()) return VAK_Invalid; return VAK_Valid; } if (Ty.isDestructedType() == QualType::DK_nontrivial_c_struct) return VAK_Invalid; if (Ty.isCXX98PODType(Context)) return VAK_Valid; // C++11 [expr.call]p7: // Passing a potentially-evaluated argument of class type (Clause 9) // having a non-trivial copy constructor, a non-trivial move constructor, // or a non-trivial destructor, with no corresponding parameter, // is conditionally-supported with implementation-defined semantics. if (getLangOpts().CPlusPlus11 && !Ty->isDependentType()) if (CXXRecordDecl *Record = Ty->getAsCXXRecordDecl()) if (!Record->hasNonTrivialCopyConstructor() && !Record->hasNonTrivialMoveConstructor() && !Record->hasNonTrivialDestructor()) return VAK_ValidInCXX11; if (getLangOpts().ObjCAutoRefCount && Ty->isObjCLifetimeType()) return VAK_Valid; if (Ty->isObjCObjectType()) return VAK_Invalid; if (getLangOpts().MSVCCompat) return VAK_MSVCUndefined; // FIXME: In C++11, these cases are conditionally-supported, meaning we're // permitted to reject them. We should consider doing so. return VAK_Undefined; } void Sema::checkVariadicArgument(const Expr *E, VariadicCallType CT) { // Don't allow one to pass an Objective-C interface to a vararg. const QualType &Ty = E->getType(); VarArgKind VAK = isValidVarArgType(Ty); // Complain about passing non-POD types through varargs. switch (VAK) { case VAK_ValidInCXX11: DiagRuntimeBehavior( E->getBeginLoc(), nullptr, PDiag(diag::warn_cxx98_compat_pass_non_pod_arg_to_vararg) << Ty << CT); LLVM_FALLTHROUGH; case VAK_Valid: if (Ty->isRecordType()) { // This is unlikely to be what the user intended. If the class has a // 'c_str' member function, the user probably meant to call that. DiagRuntimeBehavior(E->getBeginLoc(), nullptr, PDiag(diag::warn_pass_class_arg_to_vararg) << Ty << CT << hasCStrMethod(E) << ".c_str()"); } break; case VAK_Undefined: case VAK_MSVCUndefined: DiagRuntimeBehavior(E->getBeginLoc(), nullptr, PDiag(diag::warn_cannot_pass_non_pod_arg_to_vararg) << getLangOpts().CPlusPlus11 << Ty << CT); break; case VAK_Invalid: if (Ty.isDestructedType() == QualType::DK_nontrivial_c_struct) Diag(E->getBeginLoc(), diag::err_cannot_pass_non_trivial_c_struct_to_vararg) << Ty << CT; else if (Ty->isObjCObjectType()) DiagRuntimeBehavior(E->getBeginLoc(), nullptr, PDiag(diag::err_cannot_pass_objc_interface_to_vararg) << Ty << CT); else Diag(E->getBeginLoc(), diag::err_cannot_pass_to_vararg) << isa(E) << Ty << CT; break; } } /// DefaultVariadicArgumentPromotion - Like DefaultArgumentPromotion, but /// will create a trap if the resulting type is not a POD type. ExprResult Sema::DefaultVariadicArgumentPromotion(Expr *E, VariadicCallType CT, FunctionDecl *FDecl) { if (const BuiltinType *PlaceholderTy = E->getType()->getAsPlaceholderType()) { // Strip the unbridged-cast placeholder expression off, if applicable. if (PlaceholderTy->getKind() == BuiltinType::ARCUnbridgedCast && (CT == VariadicMethod || (FDecl && FDecl->hasAttr()))) { E = stripARCUnbridgedCast(E); // Otherwise, do normal placeholder checking. } else { ExprResult ExprRes = CheckPlaceholderExpr(E); if (ExprRes.isInvalid()) return ExprError(); E = ExprRes.get(); } } ExprResult ExprRes = DefaultArgumentPromotion(E); if (ExprRes.isInvalid()) return ExprError(); // Copy blocks to the heap. if (ExprRes.get()->getType()->isBlockPointerType()) maybeExtendBlockObject(ExprRes); E = ExprRes.get(); // Diagnostics regarding non-POD argument types are // emitted along with format string checking in Sema::CheckFunctionCall(). if (isValidVarArgType(E->getType()) == VAK_Undefined) { // Turn this into a trap. CXXScopeSpec SS; SourceLocation TemplateKWLoc; UnqualifiedId Name; Name.setIdentifier(PP.getIdentifierInfo("__builtin_trap"), E->getBeginLoc()); ExprResult TrapFn = ActOnIdExpression(TUScope, SS, TemplateKWLoc, Name, /*HasTrailingLParen=*/true, /*IsAddressOfOperand=*/false); if (TrapFn.isInvalid()) return ExprError(); ExprResult Call = BuildCallExpr(TUScope, TrapFn.get(), E->getBeginLoc(), None, E->getEndLoc()); if (Call.isInvalid()) return ExprError(); ExprResult Comma = ActOnBinOp(TUScope, E->getBeginLoc(), tok::comma, Call.get(), E); if (Comma.isInvalid()) return ExprError(); return Comma.get(); } if (!getLangOpts().CPlusPlus && RequireCompleteType(E->getExprLoc(), E->getType(), diag::err_call_incomplete_argument)) return ExprError(); return E; } /// Converts an integer to complex float type. Helper function of /// UsualArithmeticConversions() /// /// \return false if the integer expression is an integer type and is /// successfully converted to the complex type. static bool handleIntegerToComplexFloatConversion(Sema &S, ExprResult &IntExpr, ExprResult &ComplexExpr, QualType IntTy, QualType ComplexTy, bool SkipCast) { if (IntTy->isComplexType() || IntTy->isRealFloatingType()) return true; if (SkipCast) return false; if (IntTy->isIntegerType()) { QualType fpTy = cast(ComplexTy)->getElementType(); IntExpr = S.ImpCastExprToType(IntExpr.get(), fpTy, CK_IntegralToFloating); IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy, CK_FloatingRealToComplex); } else { assert(IntTy->isComplexIntegerType()); IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy, CK_IntegralComplexToFloatingComplex); } return false; } /// Handle arithmetic conversion with complex types. Helper function of /// UsualArithmeticConversions() static QualType handleComplexFloatConversion(Sema &S, ExprResult &LHS, ExprResult &RHS, QualType LHSType, QualType RHSType, bool IsCompAssign) { // if we have an integer operand, the result is the complex type. if (!handleIntegerToComplexFloatConversion(S, RHS, LHS, RHSType, LHSType, /*skipCast*/false)) return LHSType; if (!handleIntegerToComplexFloatConversion(S, LHS, RHS, LHSType, RHSType, /*skipCast*/IsCompAssign)) return RHSType; // This handles complex/complex, complex/float, or float/complex. // When both operands are complex, the shorter operand is converted to the // type of the longer, and that is the type of the result. This corresponds // to what is done when combining two real floating-point operands. // The fun begins when size promotion occur across type domains. // From H&S 6.3.4: When one operand is complex and the other is a real // floating-point type, the less precise type is converted, within it's // real or complex domain, to the precision of the other type. For example, // when combining a "long double" with a "double _Complex", the // "double _Complex" is promoted to "long double _Complex". // Compute the rank of the two types, regardless of whether they are complex. int Order = S.Context.getFloatingTypeOrder(LHSType, RHSType); auto *LHSComplexType = dyn_cast(LHSType); auto *RHSComplexType = dyn_cast(RHSType); QualType LHSElementType = LHSComplexType ? LHSComplexType->getElementType() : LHSType; QualType RHSElementType = RHSComplexType ? RHSComplexType->getElementType() : RHSType; QualType ResultType = S.Context.getComplexType(LHSElementType); if (Order < 0) { // Promote the precision of the LHS if not an assignment. ResultType = S.Context.getComplexType(RHSElementType); if (!IsCompAssign) { if (LHSComplexType) LHS = S.ImpCastExprToType(LHS.get(), ResultType, CK_FloatingComplexCast); else LHS = S.ImpCastExprToType(LHS.get(), RHSElementType, CK_FloatingCast); } } else if (Order > 0) { // Promote the precision of the RHS. if (RHSComplexType) RHS = S.ImpCastExprToType(RHS.get(), ResultType, CK_FloatingComplexCast); else RHS = S.ImpCastExprToType(RHS.get(), LHSElementType, CK_FloatingCast); } return ResultType; } /// Handle arithmetic conversion from integer to float. Helper function /// of UsualArithmeticConversions() static QualType handleIntToFloatConversion(Sema &S, ExprResult &FloatExpr, ExprResult &IntExpr, QualType FloatTy, QualType IntTy, bool ConvertFloat, bool ConvertInt) { if (IntTy->isIntegerType()) { if (ConvertInt) // Convert intExpr to the lhs floating point type. IntExpr = S.ImpCastExprToType(IntExpr.get(), FloatTy, CK_IntegralToFloating); return FloatTy; } // Convert both sides to the appropriate complex float. assert(IntTy->isComplexIntegerType()); QualType result = S.Context.getComplexType(FloatTy); // _Complex int -> _Complex float if (ConvertInt) IntExpr = S.ImpCastExprToType(IntExpr.get(), result, CK_IntegralComplexToFloatingComplex); // float -> _Complex float if (ConvertFloat) FloatExpr = S.ImpCastExprToType(FloatExpr.get(), result, CK_FloatingRealToComplex); return result; } /// Handle arithmethic conversion with floating point types. Helper /// function of UsualArithmeticConversions() static QualType handleFloatConversion(Sema &S, ExprResult &LHS, ExprResult &RHS, QualType LHSType, QualType RHSType, bool IsCompAssign) { bool LHSFloat = LHSType->isRealFloatingType(); bool RHSFloat = RHSType->isRealFloatingType(); // N1169 4.1.4: If one of the operands has a floating type and the other // operand has a fixed-point type, the fixed-point operand // is converted to the floating type [...] if (LHSType->isFixedPointType() || RHSType->isFixedPointType()) { if (LHSFloat) RHS = S.ImpCastExprToType(RHS.get(), LHSType, CK_FixedPointToFloating); else if (!IsCompAssign) LHS = S.ImpCastExprToType(LHS.get(), RHSType, CK_FixedPointToFloating); return LHSFloat ? LHSType : RHSType; } // If we have two real floating types, convert the smaller operand // to the bigger result. if (LHSFloat && RHSFloat) { int order = S.Context.getFloatingTypeOrder(LHSType, RHSType); if (order > 0) { RHS = S.ImpCastExprToType(RHS.get(), LHSType, CK_FloatingCast); return LHSType; } assert(order < 0 && "illegal float comparison"); if (!IsCompAssign) LHS = S.ImpCastExprToType(LHS.get(), RHSType, CK_FloatingCast); return RHSType; } if (LHSFloat) { // Half FP has to be promoted to float unless it is natively supported if (LHSType->isHalfType() && !S.getLangOpts().NativeHalfType) LHSType = S.Context.FloatTy; return handleIntToFloatConversion(S, LHS, RHS, LHSType, RHSType, /*ConvertFloat=*/!IsCompAssign, /*ConvertInt=*/ true); } assert(RHSFloat); return handleIntToFloatConversion(S, RHS, LHS, RHSType, LHSType, /*ConvertFloat=*/ true, /*ConvertInt=*/!IsCompAssign); } /// Diagnose attempts to convert between __float128 and long double if /// there is no support for such conversion. Helper function of /// UsualArithmeticConversions(). static bool unsupportedTypeConversion(const Sema &S, QualType LHSType, QualType RHSType) { /* No issue converting if at least one of the types is not a floating point type or the two types have the same rank. */ if (!LHSType->isFloatingType() || !RHSType->isFloatingType() || S.Context.getFloatingTypeOrder(LHSType, RHSType) == 0) return false; assert(LHSType->isFloatingType() && RHSType->isFloatingType() && "The remaining types must be floating point types."); auto *LHSComplex = LHSType->getAs(); auto *RHSComplex = RHSType->getAs(); QualType LHSElemType = LHSComplex ? LHSComplex->getElementType() : LHSType; QualType RHSElemType = RHSComplex ? RHSComplex->getElementType() : RHSType; // No issue if the two types have the same representation if (&S.Context.getFloatTypeSemantics(LHSElemType) == &S.Context.getFloatTypeSemantics(RHSElemType)) return false; bool Float128AndLongDouble = (LHSElemType == S.Context.Float128Ty && RHSElemType == S.Context.LongDoubleTy); Float128AndLongDouble |= (LHSElemType == S.Context.LongDoubleTy && RHSElemType == S.Context.Float128Ty); // We've handled the situation where __float128 and long double have the same // representation. We allow all conversions for all possible long double types // except PPC's double double. return Float128AndLongDouble && (&S.Context.getFloatTypeSemantics(S.Context.LongDoubleTy) == &llvm::APFloat::PPCDoubleDouble()); } typedef ExprResult PerformCastFn(Sema &S, Expr *operand, QualType toType); namespace { /// These helper callbacks are placed in an anonymous namespace to /// permit their use as function template parameters. ExprResult doIntegralCast(Sema &S, Expr *op, QualType toType) { return S.ImpCastExprToType(op, toType, CK_IntegralCast); } ExprResult doComplexIntegralCast(Sema &S, Expr *op, QualType toType) { return S.ImpCastExprToType(op, S.Context.getComplexType(toType), CK_IntegralComplexCast); } } /// Handle integer arithmetic conversions. Helper function of /// UsualArithmeticConversions() template static QualType handleIntegerConversion(Sema &S, ExprResult &LHS, ExprResult &RHS, QualType LHSType, QualType RHSType, bool IsCompAssign) { // The rules for this case are in C99 6.3.1.8 int order = S.Context.getIntegerTypeOrder(LHSType, RHSType); bool LHSSigned = LHSType->hasSignedIntegerRepresentation(); bool RHSSigned = RHSType->hasSignedIntegerRepresentation(); if (LHSSigned == RHSSigned) { // Same signedness; use the higher-ranked type if (order >= 0) { RHS = (*doRHSCast)(S, RHS.get(), LHSType); return LHSType; } else if (!IsCompAssign) LHS = (*doLHSCast)(S, LHS.get(), RHSType); return RHSType; } else if (order != (LHSSigned ? 1 : -1)) { // The unsigned type has greater than or equal rank to the // signed type, so use the unsigned type if (RHSSigned) { RHS = (*doRHSCast)(S, RHS.get(), LHSType); return LHSType; } else if (!IsCompAssign) LHS = (*doLHSCast)(S, LHS.get(), RHSType); return RHSType; } else if (S.Context.getIntWidth(LHSType) != S.Context.getIntWidth(RHSType)) { // The two types are different widths; if we are here, that // means the signed type is larger than the unsigned type, so // use the signed type. if (LHSSigned) { RHS = (*doRHSCast)(S, RHS.get(), LHSType); return LHSType; } else if (!IsCompAssign) LHS = (*doLHSCast)(S, LHS.get(), RHSType); return RHSType; } else { // The signed type is higher-ranked than the unsigned type, // but isn't actually any bigger (like unsigned int and long // on most 32-bit systems). Use the unsigned type corresponding // to the signed type. QualType result = S.Context.getCorrespondingUnsignedType(LHSSigned ? LHSType : RHSType); RHS = (*doRHSCast)(S, RHS.get(), result); if (!IsCompAssign) LHS = (*doLHSCast)(S, LHS.get(), result); return result; } } /// Handle conversions with GCC complex int extension. Helper function /// of UsualArithmeticConversions() static QualType handleComplexIntConversion(Sema &S, ExprResult &LHS, ExprResult &RHS, QualType LHSType, QualType RHSType, bool IsCompAssign) { const ComplexType *LHSComplexInt = LHSType->getAsComplexIntegerType(); const ComplexType *RHSComplexInt = RHSType->getAsComplexIntegerType(); if (LHSComplexInt && RHSComplexInt) { QualType LHSEltType = LHSComplexInt->getElementType(); QualType RHSEltType = RHSComplexInt->getElementType(); QualType ScalarType = handleIntegerConversion (S, LHS, RHS, LHSEltType, RHSEltType, IsCompAssign); return S.Context.getComplexType(ScalarType); } if (LHSComplexInt) { QualType LHSEltType = LHSComplexInt->getElementType(); QualType ScalarType = handleIntegerConversion (S, LHS, RHS, LHSEltType, RHSType, IsCompAssign); QualType ComplexType = S.Context.getComplexType(ScalarType); RHS = S.ImpCastExprToType(RHS.get(), ComplexType, CK_IntegralRealToComplex); return ComplexType; } assert(RHSComplexInt); QualType RHSEltType = RHSComplexInt->getElementType(); QualType ScalarType = handleIntegerConversion (S, LHS, RHS, LHSType, RHSEltType, IsCompAssign); QualType ComplexType = S.Context.getComplexType(ScalarType); if (!IsCompAssign) LHS = S.ImpCastExprToType(LHS.get(), ComplexType, CK_IntegralRealToComplex); return ComplexType; } /// Return the rank of a given fixed point or integer type. The value itself /// doesn't matter, but the values must be increasing with proper increasing /// rank as described in N1169 4.1.1. static unsigned GetFixedPointRank(QualType Ty) { const auto *BTy = Ty->getAs(); assert(BTy && "Expected a builtin type."); switch (BTy->getKind()) { case BuiltinType::ShortFract: case BuiltinType::UShortFract: case BuiltinType::SatShortFract: case BuiltinType::SatUShortFract: return 1; case BuiltinType::Fract: case BuiltinType::UFract: case BuiltinType::SatFract: case BuiltinType::SatUFract: return 2; case BuiltinType::LongFract: case BuiltinType::ULongFract: case BuiltinType::SatLongFract: case BuiltinType::SatULongFract: return 3; case BuiltinType::ShortAccum: case BuiltinType::UShortAccum: case BuiltinType::SatShortAccum: case BuiltinType::SatUShortAccum: return 4; case BuiltinType::Accum: case BuiltinType::UAccum: case BuiltinType::SatAccum: case BuiltinType::SatUAccum: return 5; case BuiltinType::LongAccum: case BuiltinType::ULongAccum: case BuiltinType::SatLongAccum: case BuiltinType::SatULongAccum: return 6; default: if (BTy->isInteger()) return 0; llvm_unreachable("Unexpected fixed point or integer type"); } } /// handleFixedPointConversion - Fixed point operations between fixed /// point types and integers or other fixed point types do not fall under /// usual arithmetic conversion since these conversions could result in loss /// of precsision (N1169 4.1.4). These operations should be calculated with /// the full precision of their result type (N1169 4.1.6.2.1). static QualType handleFixedPointConversion(Sema &S, QualType LHSTy, QualType RHSTy) { assert((LHSTy->isFixedPointType() || RHSTy->isFixedPointType()) && "Expected at least one of the operands to be a fixed point type"); assert((LHSTy->isFixedPointOrIntegerType() || RHSTy->isFixedPointOrIntegerType()) && "Special fixed point arithmetic operation conversions are only " "applied to ints or other fixed point types"); // If one operand has signed fixed-point type and the other operand has // unsigned fixed-point type, then the unsigned fixed-point operand is // converted to its corresponding signed fixed-point type and the resulting // type is the type of the converted operand. if (RHSTy->isSignedFixedPointType() && LHSTy->isUnsignedFixedPointType()) LHSTy = S.Context.getCorrespondingSignedFixedPointType(LHSTy); else if (RHSTy->isUnsignedFixedPointType() && LHSTy->isSignedFixedPointType()) RHSTy = S.Context.getCorrespondingSignedFixedPointType(RHSTy); // The result type is the type with the highest rank, whereby a fixed-point // conversion rank is always greater than an integer conversion rank; if the // type of either of the operands is a saturating fixedpoint type, the result // type shall be the saturating fixed-point type corresponding to the type // with the highest rank; the resulting value is converted (taking into // account rounding and overflow) to the precision of the resulting type. // Same ranks between signed and unsigned types are resolved earlier, so both // types are either signed or both unsigned at this point. unsigned LHSTyRank = GetFixedPointRank(LHSTy); unsigned RHSTyRank = GetFixedPointRank(RHSTy); QualType ResultTy = LHSTyRank > RHSTyRank ? LHSTy : RHSTy; if (LHSTy->isSaturatedFixedPointType() || RHSTy->isSaturatedFixedPointType()) ResultTy = S.Context.getCorrespondingSaturatedType(ResultTy); return ResultTy; } /// Check that the usual arithmetic conversions can be performed on this pair of /// expressions that might be of enumeration type. static void checkEnumArithmeticConversions(Sema &S, Expr *LHS, Expr *RHS, SourceLocation Loc, Sema::ArithConvKind ACK) { // C++2a [expr.arith.conv]p1: // If one operand is of enumeration type and the other operand is of a // different enumeration type or a floating-point type, this behavior is // deprecated ([depr.arith.conv.enum]). // // Warn on this in all language modes. Produce a deprecation warning in C++20. // Eventually we will presumably reject these cases (in C++23 onwards?). QualType L = LHS->getType(), R = RHS->getType(); bool LEnum = L->isUnscopedEnumerationType(), REnum = R->isUnscopedEnumerationType(); bool IsCompAssign = ACK == Sema::ACK_CompAssign; if ((!IsCompAssign && LEnum && R->isFloatingType()) || (REnum && L->isFloatingType())) { S.Diag(Loc, S.getLangOpts().CPlusPlus20 ? diag::warn_arith_conv_enum_float_cxx20 : diag::warn_arith_conv_enum_float) << LHS->getSourceRange() << RHS->getSourceRange() << (int)ACK << LEnum << L << R; } else if (!IsCompAssign && LEnum && REnum && !S.Context.hasSameUnqualifiedType(L, R)) { unsigned DiagID; if (!L->castAs()->getDecl()->hasNameForLinkage() || !R->castAs()->getDecl()->hasNameForLinkage()) { // If either enumeration type is unnamed, it's less likely that the // user cares about this, but this situation is still deprecated in // C++2a. Use a different warning group. DiagID = S.getLangOpts().CPlusPlus20 ? diag::warn_arith_conv_mixed_anon_enum_types_cxx20 : diag::warn_arith_conv_mixed_anon_enum_types; } else if (ACK == Sema::ACK_Conditional) { // Conditional expressions are separated out because they have // historically had a different warning flag. DiagID = S.getLangOpts().CPlusPlus20 ? diag::warn_conditional_mixed_enum_types_cxx20 : diag::warn_conditional_mixed_enum_types; } else if (ACK == Sema::ACK_Comparison) { // Comparison expressions are separated out because they have // historically had a different warning flag. DiagID = S.getLangOpts().CPlusPlus20 ? diag::warn_comparison_mixed_enum_types_cxx20 : diag::warn_comparison_mixed_enum_types; } else { DiagID = S.getLangOpts().CPlusPlus20 ? diag::warn_arith_conv_mixed_enum_types_cxx20 : diag::warn_arith_conv_mixed_enum_types; } S.Diag(Loc, DiagID) << LHS->getSourceRange() << RHS->getSourceRange() << (int)ACK << L << R; } } /// UsualArithmeticConversions - Performs various conversions that are common to /// binary operators (C99 6.3.1.8). If both operands aren't arithmetic, this /// routine returns the first non-arithmetic type found. The client is /// responsible for emitting appropriate error diagnostics. QualType Sema::UsualArithmeticConversions(ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, ArithConvKind ACK) { checkEnumArithmeticConversions(*this, LHS.get(), RHS.get(), Loc, ACK); if (ACK != ACK_CompAssign) { LHS = UsualUnaryConversions(LHS.get()); if (LHS.isInvalid()) return QualType(); } RHS = UsualUnaryConversions(RHS.get()); if (RHS.isInvalid()) return QualType(); // For conversion purposes, we ignore any qualifiers. // For example, "const float" and "float" are equivalent. QualType LHSType = Context.getCanonicalType(LHS.get()->getType()).getUnqualifiedType(); QualType RHSType = Context.getCanonicalType(RHS.get()->getType()).getUnqualifiedType(); // For conversion purposes, we ignore any atomic qualifier on the LHS. if (const AtomicType *AtomicLHS = LHSType->getAs()) LHSType = AtomicLHS->getValueType(); // If both types are identical, no conversion is needed. if (LHSType == RHSType) return LHSType; // If either side is a non-arithmetic type (e.g. a pointer), we are done. // The caller can deal with this (e.g. pointer + int). if (!LHSType->isArithmeticType() || !RHSType->isArithmeticType()) return QualType(); // Apply unary and bitfield promotions to the LHS's type. QualType LHSUnpromotedType = LHSType; if (LHSType->isPromotableIntegerType()) LHSType = Context.getPromotedIntegerType(LHSType); QualType LHSBitfieldPromoteTy = Context.isPromotableBitField(LHS.get()); if (!LHSBitfieldPromoteTy.isNull()) LHSType = LHSBitfieldPromoteTy; if (LHSType != LHSUnpromotedType && ACK != ACK_CompAssign) LHS = ImpCastExprToType(LHS.get(), LHSType, CK_IntegralCast); // If both types are identical, no conversion is needed. if (LHSType == RHSType) return LHSType; // ExtInt types aren't subject to conversions between them or normal integers, // so this fails. if(LHSType->isExtIntType() || RHSType->isExtIntType()) return QualType(); // At this point, we have two different arithmetic types. // Diagnose attempts to convert between __float128 and long double where // such conversions currently can't be handled. if (unsupportedTypeConversion(*this, LHSType, RHSType)) return QualType(); // Handle complex types first (C99 6.3.1.8p1). if (LHSType->isComplexType() || RHSType->isComplexType()) return handleComplexFloatConversion(*this, LHS, RHS, LHSType, RHSType, ACK == ACK_CompAssign); // Now handle "real" floating types (i.e. float, double, long double). if (LHSType->isRealFloatingType() || RHSType->isRealFloatingType()) return handleFloatConversion(*this, LHS, RHS, LHSType, RHSType, ACK == ACK_CompAssign); // Handle GCC complex int extension. if (LHSType->isComplexIntegerType() || RHSType->isComplexIntegerType()) return handleComplexIntConversion(*this, LHS, RHS, LHSType, RHSType, ACK == ACK_CompAssign); if (LHSType->isFixedPointType() || RHSType->isFixedPointType()) return handleFixedPointConversion(*this, LHSType, RHSType); // Finally, we have two differing integer types. return handleIntegerConversion (*this, LHS, RHS, LHSType, RHSType, ACK == ACK_CompAssign); } //===----------------------------------------------------------------------===// // Semantic Analysis for various Expression Types //===----------------------------------------------------------------------===// ExprResult Sema::ActOnGenericSelectionExpr(SourceLocation KeyLoc, SourceLocation DefaultLoc, SourceLocation RParenLoc, Expr *ControllingExpr, ArrayRef ArgTypes, ArrayRef ArgExprs) { unsigned NumAssocs = ArgTypes.size(); assert(NumAssocs == ArgExprs.size()); TypeSourceInfo **Types = new TypeSourceInfo*[NumAssocs]; for (unsigned i = 0; i < NumAssocs; ++i) { if (ArgTypes[i]) (void) GetTypeFromParser(ArgTypes[i], &Types[i]); else Types[i] = nullptr; } ExprResult ER = CreateGenericSelectionExpr(KeyLoc, DefaultLoc, RParenLoc, ControllingExpr, llvm::makeArrayRef(Types, NumAssocs), ArgExprs); delete [] Types; return ER; } ExprResult Sema::CreateGenericSelectionExpr(SourceLocation KeyLoc, SourceLocation DefaultLoc, SourceLocation RParenLoc, Expr *ControllingExpr, ArrayRef Types, ArrayRef Exprs) { unsigned NumAssocs = Types.size(); assert(NumAssocs == Exprs.size()); // Decay and strip qualifiers for the controlling expression type, and handle // placeholder type replacement. See committee discussion from WG14 DR423. { EnterExpressionEvaluationContext Unevaluated( *this, Sema::ExpressionEvaluationContext::Unevaluated); ExprResult R = DefaultFunctionArrayLvalueConversion(ControllingExpr); if (R.isInvalid()) return ExprError(); ControllingExpr = R.get(); } // The controlling expression is an unevaluated operand, so side effects are // likely unintended. if (!inTemplateInstantiation() && ControllingExpr->HasSideEffects(Context, false)) Diag(ControllingExpr->getExprLoc(), diag::warn_side_effects_unevaluated_context); bool TypeErrorFound = false, IsResultDependent = ControllingExpr->isTypeDependent(), ContainsUnexpandedParameterPack = ControllingExpr->containsUnexpandedParameterPack(); for (unsigned i = 0; i < NumAssocs; ++i) { if (Exprs[i]->containsUnexpandedParameterPack()) ContainsUnexpandedParameterPack = true; if (Types[i]) { if (Types[i]->getType()->containsUnexpandedParameterPack()) ContainsUnexpandedParameterPack = true; if (Types[i]->getType()->isDependentType()) { IsResultDependent = true; } else { // C11 6.5.1.1p2 "The type name in a generic association shall specify a // complete object type other than a variably modified type." unsigned D = 0; if (Types[i]->getType()->isIncompleteType()) D = diag::err_assoc_type_incomplete; else if (!Types[i]->getType()->isObjectType()) D = diag::err_assoc_type_nonobject; else if (Types[i]->getType()->isVariablyModifiedType()) D = diag::err_assoc_type_variably_modified; if (D != 0) { Diag(Types[i]->getTypeLoc().getBeginLoc(), D) << Types[i]->getTypeLoc().getSourceRange() << Types[i]->getType(); TypeErrorFound = true; } // C11 6.5.1.1p2 "No two generic associations in the same generic // selection shall specify compatible types." for (unsigned j = i+1; j < NumAssocs; ++j) if (Types[j] && !Types[j]->getType()->isDependentType() && Context.typesAreCompatible(Types[i]->getType(), Types[j]->getType())) { Diag(Types[j]->getTypeLoc().getBeginLoc(), diag::err_assoc_compatible_types) << Types[j]->getTypeLoc().getSourceRange() << Types[j]->getType() << Types[i]->getType(); Diag(Types[i]->getTypeLoc().getBeginLoc(), diag::note_compat_assoc) << Types[i]->getTypeLoc().getSourceRange() << Types[i]->getType(); TypeErrorFound = true; } } } } if (TypeErrorFound) return ExprError(); // If we determined that the generic selection is result-dependent, don't // try to compute the result expression. if (IsResultDependent) return GenericSelectionExpr::Create(Context, KeyLoc, ControllingExpr, Types, Exprs, DefaultLoc, RParenLoc, ContainsUnexpandedParameterPack); SmallVector CompatIndices; unsigned DefaultIndex = -1U; for (unsigned i = 0; i < NumAssocs; ++i) { if (!Types[i]) DefaultIndex = i; else if (Context.typesAreCompatible(ControllingExpr->getType(), Types[i]->getType())) CompatIndices.push_back(i); } // C11 6.5.1.1p2 "The controlling expression of a generic selection shall have // type compatible with at most one of the types named in its generic // association list." if (CompatIndices.size() > 1) { // We strip parens here because the controlling expression is typically // parenthesized in macro definitions. ControllingExpr = ControllingExpr->IgnoreParens(); Diag(ControllingExpr->getBeginLoc(), diag::err_generic_sel_multi_match) << ControllingExpr->getSourceRange() << ControllingExpr->getType() << (unsigned)CompatIndices.size(); for (unsigned I : CompatIndices) { Diag(Types[I]->getTypeLoc().getBeginLoc(), diag::note_compat_assoc) << Types[I]->getTypeLoc().getSourceRange() << Types[I]->getType(); } return ExprError(); } // C11 6.5.1.1p2 "If a generic selection has no default generic association, // its controlling expression shall have type compatible with exactly one of // the types named in its generic association list." if (DefaultIndex == -1U && CompatIndices.size() == 0) { // We strip parens here because the controlling expression is typically // parenthesized in macro definitions. ControllingExpr = ControllingExpr->IgnoreParens(); Diag(ControllingExpr->getBeginLoc(), diag::err_generic_sel_no_match) << ControllingExpr->getSourceRange() << ControllingExpr->getType(); return ExprError(); } // C11 6.5.1.1p3 "If a generic selection has a generic association with a // type name that is compatible with the type of the controlling expression, // then the result expression of the generic selection is the expression // in that generic association. Otherwise, the result expression of the // generic selection is the expression in the default generic association." unsigned ResultIndex = CompatIndices.size() ? CompatIndices[0] : DefaultIndex; return GenericSelectionExpr::Create( Context, KeyLoc, ControllingExpr, Types, Exprs, DefaultLoc, RParenLoc, ContainsUnexpandedParameterPack, ResultIndex); } /// getUDSuffixLoc - Create a SourceLocation for a ud-suffix, given the /// location of the token and the offset of the ud-suffix within it. static SourceLocation getUDSuffixLoc(Sema &S, SourceLocation TokLoc, unsigned Offset) { return Lexer::AdvanceToTokenCharacter(TokLoc, Offset, S.getSourceManager(), S.getLangOpts()); } /// BuildCookedLiteralOperatorCall - A user-defined literal was found. Look up /// the corresponding cooked (non-raw) literal operator, and build a call to it. static ExprResult BuildCookedLiteralOperatorCall(Sema &S, Scope *Scope, IdentifierInfo *UDSuffix, SourceLocation UDSuffixLoc, ArrayRef Args, SourceLocation LitEndLoc) { assert(Args.size() <= 2 && "too many arguments for literal operator"); QualType ArgTy[2]; for (unsigned ArgIdx = 0; ArgIdx != Args.size(); ++ArgIdx) { ArgTy[ArgIdx] = Args[ArgIdx]->getType(); if (ArgTy[ArgIdx]->isArrayType()) ArgTy[ArgIdx] = S.Context.getArrayDecayedType(ArgTy[ArgIdx]); } DeclarationName OpName = S.Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); LookupResult R(S, OpName, UDSuffixLoc, Sema::LookupOrdinaryName); if (S.LookupLiteralOperator(Scope, R, llvm::makeArrayRef(ArgTy, Args.size()), /*AllowRaw*/ false, /*AllowTemplate*/ false, /*AllowStringTemplatePack*/ false, /*DiagnoseMissing*/ true) == Sema::LOLR_Error) return ExprError(); return S.BuildLiteralOperatorCall(R, OpNameInfo, Args, LitEndLoc); } /// ActOnStringLiteral - The specified tokens were lexed as pasted string /// fragments (e.g. "foo" "bar" L"baz"). The result string has to handle string /// concatenation ([C99 5.1.1.2, translation phase #6]), so it may come from /// multiple tokens. However, the common case is that StringToks points to one /// string. /// ExprResult Sema::ActOnStringLiteral(ArrayRef StringToks, Scope *UDLScope) { assert(!StringToks.empty() && "Must have at least one string!"); StringLiteralParser Literal(StringToks, PP); if (Literal.hadError) return ExprError(); SmallVector StringTokLocs; for (const Token &Tok : StringToks) StringTokLocs.push_back(Tok.getLocation()); QualType CharTy = Context.CharTy; StringLiteral::StringKind Kind = StringLiteral::Ascii; if (Literal.isWide()) { CharTy = Context.getWideCharType(); Kind = StringLiteral::Wide; } else if (Literal.isUTF8()) { if (getLangOpts().Char8) CharTy = Context.Char8Ty; Kind = StringLiteral::UTF8; } else if (Literal.isUTF16()) { CharTy = Context.Char16Ty; Kind = StringLiteral::UTF16; } else if (Literal.isUTF32()) { CharTy = Context.Char32Ty; Kind = StringLiteral::UTF32; } else if (Literal.isPascal()) { CharTy = Context.UnsignedCharTy; } // Warn on initializing an array of char from a u8 string literal; this // becomes ill-formed in C++2a. if (getLangOpts().CPlusPlus && !getLangOpts().CPlusPlus20 && !getLangOpts().Char8 && Kind == StringLiteral::UTF8) { Diag(StringTokLocs.front(), diag::warn_cxx20_compat_utf8_string); // Create removals for all 'u8' prefixes in the string literal(s). This // ensures C++2a compatibility (but may change the program behavior when // built by non-Clang compilers for which the execution character set is // not always UTF-8). auto RemovalDiag = PDiag(diag::note_cxx20_compat_utf8_string_remove_u8); SourceLocation RemovalDiagLoc; for (const Token &Tok : StringToks) { if (Tok.getKind() == tok::utf8_string_literal) { if (RemovalDiagLoc.isInvalid()) RemovalDiagLoc = Tok.getLocation(); RemovalDiag << FixItHint::CreateRemoval(CharSourceRange::getCharRange( Tok.getLocation(), Lexer::AdvanceToTokenCharacter(Tok.getLocation(), 2, getSourceManager(), getLangOpts()))); } } Diag(RemovalDiagLoc, RemovalDiag); } QualType StrTy = Context.getStringLiteralArrayType(CharTy, Literal.GetNumStringChars()); // Pass &StringTokLocs[0], StringTokLocs.size() to factory! StringLiteral *Lit = StringLiteral::Create(Context, Literal.GetString(), Kind, Literal.Pascal, StrTy, &StringTokLocs[0], StringTokLocs.size()); if (Literal.getUDSuffix().empty()) return Lit; // We're building a user-defined literal. IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); SourceLocation UDSuffixLoc = getUDSuffixLoc(*this, StringTokLocs[Literal.getUDSuffixToken()], Literal.getUDSuffixOffset()); // Make sure we're allowed user-defined literals here. if (!UDLScope) return ExprError(Diag(UDSuffixLoc, diag::err_invalid_string_udl)); // C++11 [lex.ext]p5: The literal L is treated as a call of the form // operator "" X (str, len) QualType SizeType = Context.getSizeType(); DeclarationName OpName = Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); QualType ArgTy[] = { Context.getArrayDecayedType(StrTy), SizeType }; LookupResult R(*this, OpName, UDSuffixLoc, LookupOrdinaryName); switch (LookupLiteralOperator(UDLScope, R, ArgTy, /*AllowRaw*/ false, /*AllowTemplate*/ true, /*AllowStringTemplatePack*/ true, /*DiagnoseMissing*/ true, Lit)) { case LOLR_Cooked: { llvm::APInt Len(Context.getIntWidth(SizeType), Literal.GetNumStringChars()); IntegerLiteral *LenArg = IntegerLiteral::Create(Context, Len, SizeType, StringTokLocs[0]); Expr *Args[] = { Lit, LenArg }; return BuildLiteralOperatorCall(R, OpNameInfo, Args, StringTokLocs.back()); } case LOLR_Template: { TemplateArgumentListInfo ExplicitArgs; TemplateArgument Arg(Lit); TemplateArgumentLocInfo ArgInfo(Lit); ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); return BuildLiteralOperatorCall(R, OpNameInfo, None, StringTokLocs.back(), &ExplicitArgs); } case LOLR_StringTemplatePack: { TemplateArgumentListInfo ExplicitArgs; unsigned CharBits = Context.getIntWidth(CharTy); bool CharIsUnsigned = CharTy->isUnsignedIntegerType(); llvm::APSInt Value(CharBits, CharIsUnsigned); TemplateArgument TypeArg(CharTy); TemplateArgumentLocInfo TypeArgInfo(Context.getTrivialTypeSourceInfo(CharTy)); ExplicitArgs.addArgument(TemplateArgumentLoc(TypeArg, TypeArgInfo)); for (unsigned I = 0, N = Lit->getLength(); I != N; ++I) { Value = Lit->getCodeUnit(I); TemplateArgument Arg(Context, Value, CharTy); TemplateArgumentLocInfo ArgInfo; ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); } return BuildLiteralOperatorCall(R, OpNameInfo, None, StringTokLocs.back(), &ExplicitArgs); } case LOLR_Raw: case LOLR_ErrorNoDiagnostic: llvm_unreachable("unexpected literal operator lookup result"); case LOLR_Error: return ExprError(); } llvm_unreachable("unexpected literal operator lookup result"); } DeclRefExpr * Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, SourceLocation Loc, const CXXScopeSpec *SS) { DeclarationNameInfo NameInfo(D->getDeclName(), Loc); return BuildDeclRefExpr(D, Ty, VK, NameInfo, SS); } DeclRefExpr * Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, const DeclarationNameInfo &NameInfo, const CXXScopeSpec *SS, NamedDecl *FoundD, SourceLocation TemplateKWLoc, const TemplateArgumentListInfo *TemplateArgs) { NestedNameSpecifierLoc NNS = SS ? SS->getWithLocInContext(Context) : NestedNameSpecifierLoc(); return BuildDeclRefExpr(D, Ty, VK, NameInfo, NNS, FoundD, TemplateKWLoc, TemplateArgs); } // CUDA/HIP: Check whether a captured reference variable is referencing a // host variable in a device or host device lambda. static bool isCapturingReferenceToHostVarInCUDADeviceLambda(const Sema &S, VarDecl *VD) { if (!S.getLangOpts().CUDA || !VD->hasInit()) return false; assert(VD->getType()->isReferenceType()); // Check whether the reference variable is referencing a host variable. auto *DRE = dyn_cast(VD->getInit()); if (!DRE) return false; auto *Referee = dyn_cast(DRE->getDecl()); if (!Referee || !Referee->hasGlobalStorage() || Referee->hasAttr()) return false; // Check whether the current function is a device or host device lambda. // Check whether the reference variable is a capture by getDeclContext() // since refersToEnclosingVariableOrCapture() is not ready at this point. auto *MD = dyn_cast_or_null(S.CurContext); if (MD && MD->getParent()->isLambda() && MD->getOverloadedOperator() == OO_Call && MD->hasAttr() && VD->getDeclContext() != MD) return true; return false; } NonOdrUseReason Sema::getNonOdrUseReasonInCurrentContext(ValueDecl *D) { // A declaration named in an unevaluated operand never constitutes an odr-use. if (isUnevaluatedContext()) return NOUR_Unevaluated; // C++2a [basic.def.odr]p4: // A variable x whose name appears as a potentially-evaluated expression e // is odr-used by e unless [...] x is a reference that is usable in // constant expressions. // CUDA/HIP: // If a reference variable referencing a host variable is captured in a // device or host device lambda, the value of the referee must be copied // to the capture and the reference variable must be treated as odr-use // since the value of the referee is not known at compile time and must // be loaded from the captured. if (VarDecl *VD = dyn_cast(D)) { if (VD->getType()->isReferenceType() && !(getLangOpts().OpenMP && isOpenMPCapturedDecl(D)) && !isCapturingReferenceToHostVarInCUDADeviceLambda(*this, VD) && VD->isUsableInConstantExpressions(Context)) return NOUR_Constant; } // All remaining non-variable cases constitute an odr-use. For variables, we // need to wait and see how the expression is used. return NOUR_None; } /// BuildDeclRefExpr - Build an expression that references a /// declaration that does not require a closure capture. DeclRefExpr * Sema::BuildDeclRefExpr(ValueDecl *D, QualType Ty, ExprValueKind VK, const DeclarationNameInfo &NameInfo, NestedNameSpecifierLoc NNS, NamedDecl *FoundD, SourceLocation TemplateKWLoc, const TemplateArgumentListInfo *TemplateArgs) { bool RefersToCapturedVariable = isa(D) && NeedToCaptureVariable(cast(D), NameInfo.getLoc()); DeclRefExpr *E = DeclRefExpr::Create( Context, NNS, TemplateKWLoc, D, RefersToCapturedVariable, NameInfo, Ty, VK, FoundD, TemplateArgs, getNonOdrUseReasonInCurrentContext(D)); MarkDeclRefReferenced(E); // C++ [except.spec]p17: // An exception-specification is considered to be needed when: // - in an expression, the function is the unique lookup result or // the selected member of a set of overloaded functions. // // We delay doing this until after we've built the function reference and // marked it as used so that: // a) if the function is defaulted, we get errors from defining it before / // instead of errors from computing its exception specification, and // b) if the function is a defaulted comparison, we can use the body we // build when defining it as input to the exception specification // computation rather than computing a new body. if (auto *FPT = Ty->getAs()) { if (isUnresolvedExceptionSpec(FPT->getExceptionSpecType())) { if (auto *NewFPT = ResolveExceptionSpec(NameInfo.getLoc(), FPT)) E->setType(Context.getQualifiedType(NewFPT, Ty.getQualifiers())); } } if (getLangOpts().ObjCWeak && isa(D) && Ty.getObjCLifetime() == Qualifiers::OCL_Weak && !isUnevaluatedContext() && !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, E->getBeginLoc())) getCurFunction()->recordUseOfWeak(E); FieldDecl *FD = dyn_cast(D); if (IndirectFieldDecl *IFD = dyn_cast(D)) FD = IFD->getAnonField(); if (FD) { UnusedPrivateFields.remove(FD); // Just in case we're building an illegal pointer-to-member. if (FD->isBitField()) E->setObjectKind(OK_BitField); } // C++ [expr.prim]/8: The expression [...] is a bit-field if the identifier // designates a bit-field. if (auto *BD = dyn_cast(D)) if (auto *BE = BD->getBinding()) E->setObjectKind(BE->getObjectKind()); return E; } /// Decomposes the given name into a DeclarationNameInfo, its location, and /// possibly a list of template arguments. /// /// If this produces template arguments, it is permitted to call /// DecomposeTemplateName. /// /// This actually loses a lot of source location information for /// non-standard name kinds; we should consider preserving that in /// some way. void Sema::DecomposeUnqualifiedId(const UnqualifiedId &Id, TemplateArgumentListInfo &Buffer, DeclarationNameInfo &NameInfo, const TemplateArgumentListInfo *&TemplateArgs) { if (Id.getKind() == UnqualifiedIdKind::IK_TemplateId) { Buffer.setLAngleLoc(Id.TemplateId->LAngleLoc); Buffer.setRAngleLoc(Id.TemplateId->RAngleLoc); ASTTemplateArgsPtr TemplateArgsPtr(Id.TemplateId->getTemplateArgs(), Id.TemplateId->NumArgs); translateTemplateArguments(TemplateArgsPtr, Buffer); TemplateName TName = Id.TemplateId->Template.get(); SourceLocation TNameLoc = Id.TemplateId->TemplateNameLoc; NameInfo = Context.getNameForTemplate(TName, TNameLoc); TemplateArgs = &Buffer; } else { NameInfo = GetNameFromUnqualifiedId(Id); TemplateArgs = nullptr; } } static void emitEmptyLookupTypoDiagnostic( const TypoCorrection &TC, Sema &SemaRef, const CXXScopeSpec &SS, DeclarationName Typo, SourceLocation TypoLoc, ArrayRef Args, unsigned DiagnosticID, unsigned DiagnosticSuggestID) { DeclContext *Ctx = SS.isEmpty() ? nullptr : SemaRef.computeDeclContext(SS, false); if (!TC) { // Emit a special diagnostic for failed member lookups. // FIXME: computing the declaration context might fail here (?) if (Ctx) SemaRef.Diag(TypoLoc, diag::err_no_member) << Typo << Ctx << SS.getRange(); else SemaRef.Diag(TypoLoc, DiagnosticID) << Typo; return; } std::string CorrectedStr = TC.getAsString(SemaRef.getLangOpts()); bool DroppedSpecifier = TC.WillReplaceSpecifier() && Typo.getAsString() == CorrectedStr; unsigned NoteID = TC.getCorrectionDeclAs() ? diag::note_implicit_param_decl : diag::note_previous_decl; if (!Ctx) SemaRef.diagnoseTypo(TC, SemaRef.PDiag(DiagnosticSuggestID) << Typo, SemaRef.PDiag(NoteID)); else SemaRef.diagnoseTypo(TC, SemaRef.PDiag(diag::err_no_member_suggest) << Typo << Ctx << DroppedSpecifier << SS.getRange(), SemaRef.PDiag(NoteID)); } /// Diagnose a lookup that found results in an enclosing class during error /// recovery. This usually indicates that the results were found in a dependent /// base class that could not be searched as part of a template definition. /// Always issues a diagnostic (though this may be only a warning in MS /// compatibility mode). /// /// Return \c true if the error is unrecoverable, or \c false if the caller /// should attempt to recover using these lookup results. bool Sema::DiagnoseDependentMemberLookup(LookupResult &R) { // During a default argument instantiation the CurContext points // to a CXXMethodDecl; but we can't apply a this-> fixit inside a // function parameter list, hence add an explicit check. bool isDefaultArgument = !CodeSynthesisContexts.empty() && CodeSynthesisContexts.back().Kind == CodeSynthesisContext::DefaultFunctionArgumentInstantiation; CXXMethodDecl *CurMethod = dyn_cast(CurContext); bool isInstance = CurMethod && CurMethod->isInstance() && R.getNamingClass() == CurMethod->getParent() && !isDefaultArgument; // There are two ways we can find a class-scope declaration during template // instantiation that we did not find in the template definition: if it is a // member of a dependent base class, or if it is declared after the point of // use in the same class. Distinguish these by comparing the class in which // the member was found to the naming class of the lookup. unsigned DiagID = diag::err_found_in_dependent_base; unsigned NoteID = diag::note_member_declared_at; if (R.getRepresentativeDecl()->getDeclContext()->Equals(R.getNamingClass())) { DiagID = getLangOpts().MSVCCompat ? diag::ext_found_later_in_class : diag::err_found_later_in_class; } else if (getLangOpts().MSVCCompat) { DiagID = diag::ext_found_in_dependent_base; NoteID = diag::note_dependent_member_use; } if (isInstance) { // Give a code modification hint to insert 'this->'. Diag(R.getNameLoc(), DiagID) << R.getLookupName() << FixItHint::CreateInsertion(R.getNameLoc(), "this->"); CheckCXXThisCapture(R.getNameLoc()); } else { // FIXME: Add a FixItHint to insert 'Base::' or 'Derived::' (assuming // they're not shadowed). Diag(R.getNameLoc(), DiagID) << R.getLookupName(); } for (NamedDecl *D : R) Diag(D->getLocation(), NoteID); // Return true if we are inside a default argument instantiation // and the found name refers to an instance member function, otherwise // the caller will try to create an implicit member call and this is wrong // for default arguments. // // FIXME: Is this special case necessary? We could allow the caller to // diagnose this. if (isDefaultArgument && ((*R.begin())->isCXXInstanceMember())) { Diag(R.getNameLoc(), diag::err_member_call_without_object); return true; } // Tell the callee to try to recover. return false; } /// Diagnose an empty lookup. /// /// \return false if new lookup candidates were found bool Sema::DiagnoseEmptyLookup(Scope *S, CXXScopeSpec &SS, LookupResult &R, CorrectionCandidateCallback &CCC, TemplateArgumentListInfo *ExplicitTemplateArgs, ArrayRef Args, TypoExpr **Out) { DeclarationName Name = R.getLookupName(); unsigned diagnostic = diag::err_undeclared_var_use; unsigned diagnostic_suggest = diag::err_undeclared_var_use_suggest; if (Name.getNameKind() == DeclarationName::CXXOperatorName || Name.getNameKind() == DeclarationName::CXXLiteralOperatorName || Name.getNameKind() == DeclarationName::CXXConversionFunctionName) { diagnostic = diag::err_undeclared_use; diagnostic_suggest = diag::err_undeclared_use_suggest; } // If the original lookup was an unqualified lookup, fake an // unqualified lookup. This is useful when (for example) the // original lookup would not have found something because it was a // dependent name. DeclContext *DC = SS.isEmpty() ? CurContext : nullptr; while (DC) { if (isa(DC)) { LookupQualifiedName(R, DC); if (!R.empty()) { // Don't give errors about ambiguities in this lookup. R.suppressDiagnostics(); // If there's a best viable function among the results, only mention // that one in the notes. OverloadCandidateSet Candidates(R.getNameLoc(), OverloadCandidateSet::CSK_Normal); AddOverloadedCallCandidates(R, ExplicitTemplateArgs, Args, Candidates); OverloadCandidateSet::iterator Best; if (Candidates.BestViableFunction(*this, R.getNameLoc(), Best) == OR_Success) { R.clear(); R.addDecl(Best->FoundDecl.getDecl(), Best->FoundDecl.getAccess()); R.resolveKind(); } return DiagnoseDependentMemberLookup(R); } R.clear(); } DC = DC->getLookupParent(); } // We didn't find anything, so try to correct for a typo. TypoCorrection Corrected; if (S && Out) { SourceLocation TypoLoc = R.getNameLoc(); assert(!ExplicitTemplateArgs && "Diagnosing an empty lookup with explicit template args!"); *Out = CorrectTypoDelayed( R.getLookupNameInfo(), R.getLookupKind(), S, &SS, CCC, [=](const TypoCorrection &TC) { emitEmptyLookupTypoDiagnostic(TC, *this, SS, Name, TypoLoc, Args, diagnostic, diagnostic_suggest); }, nullptr, CTK_ErrorRecovery); if (*Out) return true; } else if (S && (Corrected = CorrectTypo(R.getLookupNameInfo(), R.getLookupKind(), S, &SS, CCC, CTK_ErrorRecovery))) { std::string CorrectedStr(Corrected.getAsString(getLangOpts())); bool DroppedSpecifier = Corrected.WillReplaceSpecifier() && Name.getAsString() == CorrectedStr; R.setLookupName(Corrected.getCorrection()); bool AcceptableWithRecovery = false; bool AcceptableWithoutRecovery = false; NamedDecl *ND = Corrected.getFoundDecl(); if (ND) { if (Corrected.isOverloaded()) { OverloadCandidateSet OCS(R.getNameLoc(), OverloadCandidateSet::CSK_Normal); OverloadCandidateSet::iterator Best; for (NamedDecl *CD : Corrected) { if (FunctionTemplateDecl *FTD = dyn_cast(CD)) AddTemplateOverloadCandidate( FTD, DeclAccessPair::make(FTD, AS_none), ExplicitTemplateArgs, Args, OCS); else if (FunctionDecl *FD = dyn_cast(CD)) if (!ExplicitTemplateArgs || ExplicitTemplateArgs->size() == 0) AddOverloadCandidate(FD, DeclAccessPair::make(FD, AS_none), Args, OCS); } switch (OCS.BestViableFunction(*this, R.getNameLoc(), Best)) { case OR_Success: ND = Best->FoundDecl; Corrected.setCorrectionDecl(ND); break; default: // FIXME: Arbitrarily pick the first declaration for the note. Corrected.setCorrectionDecl(ND); break; } } R.addDecl(ND); if (getLangOpts().CPlusPlus && ND->isCXXClassMember()) { CXXRecordDecl *Record = nullptr; if (Corrected.getCorrectionSpecifier()) { const Type *Ty = Corrected.getCorrectionSpecifier()->getAsType(); Record = Ty->getAsCXXRecordDecl(); } if (!Record) Record = cast( ND->getDeclContext()->getRedeclContext()); R.setNamingClass(Record); } auto *UnderlyingND = ND->getUnderlyingDecl(); AcceptableWithRecovery = isa(UnderlyingND) || isa(UnderlyingND); // FIXME: If we ended up with a typo for a type name or // Objective-C class name, we're in trouble because the parser // is in the wrong place to recover. Suggest the typo // correction, but don't make it a fix-it since we're not going // to recover well anyway. AcceptableWithoutRecovery = isa(UnderlyingND) || getAsTypeTemplateDecl(UnderlyingND) || isa(UnderlyingND); } else { // FIXME: We found a keyword. Suggest it, but don't provide a fix-it // because we aren't able to recover. AcceptableWithoutRecovery = true; } if (AcceptableWithRecovery || AcceptableWithoutRecovery) { unsigned NoteID = Corrected.getCorrectionDeclAs() ? diag::note_implicit_param_decl : diag::note_previous_decl; if (SS.isEmpty()) diagnoseTypo(Corrected, PDiag(diagnostic_suggest) << Name, PDiag(NoteID), AcceptableWithRecovery); else diagnoseTypo(Corrected, PDiag(diag::err_no_member_suggest) << Name << computeDeclContext(SS, false) << DroppedSpecifier << SS.getRange(), PDiag(NoteID), AcceptableWithRecovery); // Tell the callee whether to try to recover. return !AcceptableWithRecovery; } } R.clear(); // Emit a special diagnostic for failed member lookups. // FIXME: computing the declaration context might fail here (?) if (!SS.isEmpty()) { Diag(R.getNameLoc(), diag::err_no_member) << Name << computeDeclContext(SS, false) << SS.getRange(); return true; } // Give up, we can't recover. Diag(R.getNameLoc(), diagnostic) << Name; return true; } /// In Microsoft mode, if we are inside a template class whose parent class has /// dependent base classes, and we can't resolve an unqualified identifier, then /// assume the identifier is a member of a dependent base class. We can only /// recover successfully in static methods, instance methods, and other contexts /// where 'this' is available. This doesn't precisely match MSVC's /// instantiation model, but it's close enough. static Expr * recoverFromMSUnqualifiedLookup(Sema &S, ASTContext &Context, DeclarationNameInfo &NameInfo, SourceLocation TemplateKWLoc, const TemplateArgumentListInfo *TemplateArgs) { // Only try to recover from lookup into dependent bases in static methods or // contexts where 'this' is available. QualType ThisType = S.getCurrentThisType(); const CXXRecordDecl *RD = nullptr; if (!ThisType.isNull()) RD = ThisType->getPointeeType()->getAsCXXRecordDecl(); else if (auto *MD = dyn_cast(S.CurContext)) RD = MD->getParent(); if (!RD || !RD->hasAnyDependentBases()) return nullptr; // Diagnose this as unqualified lookup into a dependent base class. If 'this' // is available, suggest inserting 'this->' as a fixit. SourceLocation Loc = NameInfo.getLoc(); auto DB = S.Diag(Loc, diag::ext_undeclared_unqual_id_with_dependent_base); DB << NameInfo.getName() << RD; if (!ThisType.isNull()) { DB << FixItHint::CreateInsertion(Loc, "this->"); return CXXDependentScopeMemberExpr::Create( Context, /*This=*/nullptr, ThisType, /*IsArrow=*/true, /*Op=*/SourceLocation(), NestedNameSpecifierLoc(), TemplateKWLoc, /*FirstQualifierFoundInScope=*/nullptr, NameInfo, TemplateArgs); } // Synthesize a fake NNS that points to the derived class. This will // perform name lookup during template instantiation. CXXScopeSpec SS; auto *NNS = NestedNameSpecifier::Create(Context, nullptr, true, RD->getTypeForDecl()); SS.MakeTrivial(Context, NNS, SourceRange(Loc, Loc)); return DependentScopeDeclRefExpr::Create( Context, SS.getWithLocInContext(Context), TemplateKWLoc, NameInfo, TemplateArgs); } ExprResult Sema::ActOnIdExpression(Scope *S, CXXScopeSpec &SS, SourceLocation TemplateKWLoc, UnqualifiedId &Id, bool HasTrailingLParen, bool IsAddressOfOperand, CorrectionCandidateCallback *CCC, bool IsInlineAsmIdentifier, Token *KeywordReplacement) { assert(!(IsAddressOfOperand && HasTrailingLParen) && "cannot be direct & operand and have a trailing lparen"); if (SS.isInvalid()) return ExprError(); TemplateArgumentListInfo TemplateArgsBuffer; // Decompose the UnqualifiedId into the following data. DeclarationNameInfo NameInfo; const TemplateArgumentListInfo *TemplateArgs; DecomposeUnqualifiedId(Id, TemplateArgsBuffer, NameInfo, TemplateArgs); DeclarationName Name = NameInfo.getName(); IdentifierInfo *II = Name.getAsIdentifierInfo(); SourceLocation NameLoc = NameInfo.getLoc(); if (II && II->isEditorPlaceholder()) { // FIXME: When typed placeholders are supported we can create a typed // placeholder expression node. return ExprError(); } // C++ [temp.dep.expr]p3: // An id-expression is type-dependent if it contains: // -- an identifier that was declared with a dependent type, // (note: handled after lookup) // -- a template-id that is dependent, // (note: handled in BuildTemplateIdExpr) // -- a conversion-function-id that specifies a dependent type, // -- a nested-name-specifier that contains a class-name that // names a dependent type. // Determine whether this is a member of an unknown specialization; // we need to handle these differently. bool DependentID = false; if (Name.getNameKind() == DeclarationName::CXXConversionFunctionName && Name.getCXXNameType()->isDependentType()) { DependentID = true; } else if (SS.isSet()) { if (DeclContext *DC = computeDeclContext(SS, false)) { if (RequireCompleteDeclContext(SS, DC)) return ExprError(); } else { DependentID = true; } } if (DependentID) return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, IsAddressOfOperand, TemplateArgs); // Perform the required lookup. LookupResult R(*this, NameInfo, (Id.getKind() == UnqualifiedIdKind::IK_ImplicitSelfParam) ? LookupObjCImplicitSelfParam : LookupOrdinaryName); if (TemplateKWLoc.isValid() || TemplateArgs) { // Lookup the template name again to correctly establish the context in // which it was found. This is really unfortunate as we already did the // lookup to determine that it was a template name in the first place. If // this becomes a performance hit, we can work harder to preserve those // results until we get here but it's likely not worth it. bool MemberOfUnknownSpecialization; AssumedTemplateKind AssumedTemplate; if (LookupTemplateName(R, S, SS, QualType(), /*EnteringContext=*/false, MemberOfUnknownSpecialization, TemplateKWLoc, &AssumedTemplate)) return ExprError(); if (MemberOfUnknownSpecialization || (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation)) return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, IsAddressOfOperand, TemplateArgs); } else { bool IvarLookupFollowUp = II && !SS.isSet() && getCurMethodDecl(); LookupParsedName(R, S, &SS, !IvarLookupFollowUp); // If the result might be in a dependent base class, this is a dependent // id-expression. if (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation) return ActOnDependentIdExpression(SS, TemplateKWLoc, NameInfo, IsAddressOfOperand, TemplateArgs); // If this reference is in an Objective-C method, then we need to do // some special Objective-C lookup, too. if (IvarLookupFollowUp) { ExprResult E(LookupInObjCMethod(R, S, II, true)); if (E.isInvalid()) return ExprError(); if (Expr *Ex = E.getAs()) return Ex; } } if (R.isAmbiguous()) return ExprError(); // This could be an implicitly declared function reference (legal in C90, // extension in C99, forbidden in C++). if (R.empty() && HasTrailingLParen && II && !getLangOpts().CPlusPlus) { NamedDecl *D = ImplicitlyDefineFunction(NameLoc, *II, S); if (D) R.addDecl(D); } // Determine whether this name might be a candidate for // argument-dependent lookup. bool ADL = UseArgumentDependentLookup(SS, R, HasTrailingLParen); if (R.empty() && !ADL) { if (SS.isEmpty() && getLangOpts().MSVCCompat) { if (Expr *E = recoverFromMSUnqualifiedLookup(*this, Context, NameInfo, TemplateKWLoc, TemplateArgs)) return E; } // Don't diagnose an empty lookup for inline assembly. if (IsInlineAsmIdentifier) return ExprError(); // If this name wasn't predeclared and if this is not a function // call, diagnose the problem. TypoExpr *TE = nullptr; DefaultFilterCCC DefaultValidator(II, SS.isValid() ? SS.getScopeRep() : nullptr); DefaultValidator.IsAddressOfOperand = IsAddressOfOperand; assert((!CCC || CCC->IsAddressOfOperand == IsAddressOfOperand) && "Typo correction callback misconfigured"); if (CCC) { // Make sure the callback knows what the typo being diagnosed is. CCC->setTypoName(II); if (SS.isValid()) CCC->setTypoNNS(SS.getScopeRep()); } // FIXME: DiagnoseEmptyLookup produces bad diagnostics if we're looking for // a template name, but we happen to have always already looked up the name // before we get here if it must be a template name. if (DiagnoseEmptyLookup(S, SS, R, CCC ? *CCC : DefaultValidator, nullptr, None, &TE)) { if (TE && KeywordReplacement) { auto &State = getTypoExprState(TE); auto BestTC = State.Consumer->getNextCorrection(); if (BestTC.isKeyword()) { auto *II = BestTC.getCorrectionAsIdentifierInfo(); if (State.DiagHandler) State.DiagHandler(BestTC); KeywordReplacement->startToken(); KeywordReplacement->setKind(II->getTokenID()); KeywordReplacement->setIdentifierInfo(II); KeywordReplacement->setLocation(BestTC.getCorrectionRange().getBegin()); // Clean up the state associated with the TypoExpr, since it has // now been diagnosed (without a call to CorrectDelayedTyposInExpr). clearDelayedTypo(TE); // Signal that a correction to a keyword was performed by returning a // valid-but-null ExprResult. return (Expr*)nullptr; } State.Consumer->resetCorrectionStream(); } return TE ? TE : ExprError(); } assert(!R.empty() && "DiagnoseEmptyLookup returned false but added no results"); // If we found an Objective-C instance variable, let // LookupInObjCMethod build the appropriate expression to // reference the ivar. if (ObjCIvarDecl *Ivar = R.getAsSingle()) { R.clear(); ExprResult E(LookupInObjCMethod(R, S, Ivar->getIdentifier())); // In a hopelessly buggy code, Objective-C instance variable // lookup fails and no expression will be built to reference it. if (!E.isInvalid() && !E.get()) return ExprError(); return E; } } // This is guaranteed from this point on. assert(!R.empty() || ADL); // Check whether this might be a C++ implicit instance member access. // C++ [class.mfct.non-static]p3: // When an id-expression that is not part of a class member access // syntax and not used to form a pointer to member is used in the // body of a non-static member function of class X, if name lookup // resolves the name in the id-expression to a non-static non-type // member of some class C, the id-expression is transformed into a // class member access expression using (*this) as the // postfix-expression to the left of the . operator. // // But we don't actually need to do this for '&' operands if R // resolved to a function or overloaded function set, because the // expression is ill-formed if it actually works out to be a // non-static member function: // // C++ [expr.ref]p4: // Otherwise, if E1.E2 refers to a non-static member function. . . // [t]he expression can be used only as the left-hand operand of a // member function call. // // There are other safeguards against such uses, but it's important // to get this right here so that we don't end up making a // spuriously dependent expression if we're inside a dependent // instance method. if (!R.empty() && (*R.begin())->isCXXClassMember()) { bool MightBeImplicitMember; if (!IsAddressOfOperand) MightBeImplicitMember = true; else if (!SS.isEmpty()) MightBeImplicitMember = false; else if (R.isOverloadedResult()) MightBeImplicitMember = false; else if (R.isUnresolvableResult()) MightBeImplicitMember = true; else MightBeImplicitMember = isa(R.getFoundDecl()) || isa(R.getFoundDecl()) || isa(R.getFoundDecl()); if (MightBeImplicitMember) return BuildPossibleImplicitMemberExpr(SS, TemplateKWLoc, R, TemplateArgs, S); } if (TemplateArgs || TemplateKWLoc.isValid()) { // In C++1y, if this is a variable template id, then check it // in BuildTemplateIdExpr(). // The single lookup result must be a variable template declaration. if (Id.getKind() == UnqualifiedIdKind::IK_TemplateId && Id.TemplateId && Id.TemplateId->Kind == TNK_Var_template) { assert(R.getAsSingle() && "There should only be one declaration found."); } return BuildTemplateIdExpr(SS, TemplateKWLoc, R, ADL, TemplateArgs); } return BuildDeclarationNameExpr(SS, R, ADL); } /// BuildQualifiedDeclarationNameExpr - Build a C++ qualified /// declaration name, generally during template instantiation. /// There's a large number of things which don't need to be done along /// this path. ExprResult Sema::BuildQualifiedDeclarationNameExpr( CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, bool IsAddressOfOperand, const Scope *S, TypeSourceInfo **RecoveryTSI) { DeclContext *DC = computeDeclContext(SS, false); if (!DC) return BuildDependentDeclRefExpr(SS, /*TemplateKWLoc=*/SourceLocation(), NameInfo, /*TemplateArgs=*/nullptr); if (RequireCompleteDeclContext(SS, DC)) return ExprError(); LookupResult R(*this, NameInfo, LookupOrdinaryName); LookupQualifiedName(R, DC); if (R.isAmbiguous()) return ExprError(); if (R.getResultKind() == LookupResult::NotFoundInCurrentInstantiation) return BuildDependentDeclRefExpr(SS, /*TemplateKWLoc=*/SourceLocation(), NameInfo, /*TemplateArgs=*/nullptr); if (R.empty()) { // Don't diagnose problems with invalid record decl, the secondary no_member // diagnostic during template instantiation is likely bogus, e.g. if a class // is invalid because it's derived from an invalid base class, then missing // members were likely supposed to be inherited. if (const auto *CD = dyn_cast(DC)) if (CD->isInvalidDecl()) return ExprError(); Diag(NameInfo.getLoc(), diag::err_no_member) << NameInfo.getName() << DC << SS.getRange(); return ExprError(); } if (const TypeDecl *TD = R.getAsSingle()) { // Diagnose a missing typename if this resolved unambiguously to a type in // a dependent context. If we can recover with a type, downgrade this to // a warning in Microsoft compatibility mode. unsigned DiagID = diag::err_typename_missing; if (RecoveryTSI && getLangOpts().MSVCCompat) DiagID = diag::ext_typename_missing; SourceLocation Loc = SS.getBeginLoc(); auto D = Diag(Loc, DiagID); D << SS.getScopeRep() << NameInfo.getName().getAsString() << SourceRange(Loc, NameInfo.getEndLoc()); // Don't recover if the caller isn't expecting us to or if we're in a SFINAE // context. if (!RecoveryTSI) return ExprError(); // Only issue the fixit if we're prepared to recover. D << FixItHint::CreateInsertion(Loc, "typename "); // Recover by pretending this was an elaborated type. QualType Ty = Context.getTypeDeclType(TD); TypeLocBuilder TLB; TLB.pushTypeSpec(Ty).setNameLoc(NameInfo.getLoc()); QualType ET = getElaboratedType(ETK_None, SS, Ty); ElaboratedTypeLoc QTL = TLB.push(ET); QTL.setElaboratedKeywordLoc(SourceLocation()); QTL.setQualifierLoc(SS.getWithLocInContext(Context)); *RecoveryTSI = TLB.getTypeSourceInfo(Context, ET); return ExprEmpty(); } // Defend against this resolving to an implicit member access. We usually // won't get here if this might be a legitimate a class member (we end up in // BuildMemberReferenceExpr instead), but this can be valid if we're forming // a pointer-to-member or in an unevaluated context in C++11. if (!R.empty() && (*R.begin())->isCXXClassMember() && !IsAddressOfOperand) return BuildPossibleImplicitMemberExpr(SS, /*TemplateKWLoc=*/SourceLocation(), R, /*TemplateArgs=*/nullptr, S); return BuildDeclarationNameExpr(SS, R, /* ADL */ false); } /// The parser has read a name in, and Sema has detected that we're currently /// inside an ObjC method. Perform some additional checks and determine if we /// should form a reference to an ivar. /// /// Ideally, most of this would be done by lookup, but there's /// actually quite a lot of extra work involved. DeclResult Sema::LookupIvarInObjCMethod(LookupResult &Lookup, Scope *S, IdentifierInfo *II) { SourceLocation Loc = Lookup.getNameLoc(); ObjCMethodDecl *CurMethod = getCurMethodDecl(); // Check for error condition which is already reported. if (!CurMethod) return DeclResult(true); // There are two cases to handle here. 1) scoped lookup could have failed, // in which case we should look for an ivar. 2) scoped lookup could have // found a decl, but that decl is outside the current instance method (i.e. // a global variable). In these two cases, we do a lookup for an ivar with // this name, if the lookup sucedes, we replace it our current decl. // If we're in a class method, we don't normally want to look for // ivars. But if we don't find anything else, and there's an // ivar, that's an error. bool IsClassMethod = CurMethod->isClassMethod(); bool LookForIvars; if (Lookup.empty()) LookForIvars = true; else if (IsClassMethod) LookForIvars = false; else LookForIvars = (Lookup.isSingleResult() && Lookup.getFoundDecl()->isDefinedOutsideFunctionOrMethod()); ObjCInterfaceDecl *IFace = nullptr; if (LookForIvars) { IFace = CurMethod->getClassInterface(); ObjCInterfaceDecl *ClassDeclared; ObjCIvarDecl *IV = nullptr; if (IFace && (IV = IFace->lookupInstanceVariable(II, ClassDeclared))) { // Diagnose using an ivar in a class method. if (IsClassMethod) { Diag(Loc, diag::err_ivar_use_in_class_method) << IV->getDeclName(); return DeclResult(true); } // Diagnose the use of an ivar outside of the declaring class. if (IV->getAccessControl() == ObjCIvarDecl::Private && !declaresSameEntity(ClassDeclared, IFace) && !getLangOpts().DebuggerSupport) Diag(Loc, diag::err_private_ivar_access) << IV->getDeclName(); // Success. return IV; } } else if (CurMethod->isInstanceMethod()) { // We should warn if a local variable hides an ivar. if (ObjCInterfaceDecl *IFace = CurMethod->getClassInterface()) { ObjCInterfaceDecl *ClassDeclared; if (ObjCIvarDecl *IV = IFace->lookupInstanceVariable(II, ClassDeclared)) { if (IV->getAccessControl() != ObjCIvarDecl::Private || declaresSameEntity(IFace, ClassDeclared)) Diag(Loc, diag::warn_ivar_use_hidden) << IV->getDeclName(); } } } else if (Lookup.isSingleResult() && Lookup.getFoundDecl()->isDefinedOutsideFunctionOrMethod()) { // If accessing a stand-alone ivar in a class method, this is an error. if (const ObjCIvarDecl *IV = dyn_cast(Lookup.getFoundDecl())) { Diag(Loc, diag::err_ivar_use_in_class_method) << IV->getDeclName(); return DeclResult(true); } } // Didn't encounter an error, didn't find an ivar. return DeclResult(false); } ExprResult Sema::BuildIvarRefExpr(Scope *S, SourceLocation Loc, ObjCIvarDecl *IV) { ObjCMethodDecl *CurMethod = getCurMethodDecl(); assert(CurMethod && CurMethod->isInstanceMethod() && "should not reference ivar from this context"); ObjCInterfaceDecl *IFace = CurMethod->getClassInterface(); assert(IFace && "should not reference ivar from this context"); // If we're referencing an invalid decl, just return this as a silent // error node. The error diagnostic was already emitted on the decl. if (IV->isInvalidDecl()) return ExprError(); // Check if referencing a field with __attribute__((deprecated)). if (DiagnoseUseOfDecl(IV, Loc)) return ExprError(); // FIXME: This should use a new expr for a direct reference, don't // turn this into Self->ivar, just return a BareIVarExpr or something. IdentifierInfo &II = Context.Idents.get("self"); UnqualifiedId SelfName; SelfName.setIdentifier(&II, SourceLocation()); SelfName.setKind(UnqualifiedIdKind::IK_ImplicitSelfParam); CXXScopeSpec SelfScopeSpec; SourceLocation TemplateKWLoc; ExprResult SelfExpr = ActOnIdExpression(S, SelfScopeSpec, TemplateKWLoc, SelfName, /*HasTrailingLParen=*/false, /*IsAddressOfOperand=*/false); if (SelfExpr.isInvalid()) return ExprError(); SelfExpr = DefaultLvalueConversion(SelfExpr.get()); if (SelfExpr.isInvalid()) return ExprError(); MarkAnyDeclReferenced(Loc, IV, true); ObjCMethodFamily MF = CurMethod->getMethodFamily(); if (MF != OMF_init && MF != OMF_dealloc && MF != OMF_finalize && !IvarBacksCurrentMethodAccessor(IFace, CurMethod, IV)) Diag(Loc, diag::warn_direct_ivar_access) << IV->getDeclName(); ObjCIvarRefExpr *Result = new (Context) ObjCIvarRefExpr(IV, IV->getUsageType(SelfExpr.get()->getType()), Loc, IV->getLocation(), SelfExpr.get(), true, true); if (IV->getType().getObjCLifetime() == Qualifiers::OCL_Weak) { if (!isUnevaluatedContext() && !Diags.isIgnored(diag::warn_arc_repeated_use_of_weak, Loc)) getCurFunction()->recordUseOfWeak(Result); } if (getLangOpts().ObjCAutoRefCount) if (const BlockDecl *BD = CurContext->getInnermostBlockDecl()) ImplicitlyRetainedSelfLocs.push_back({Loc, BD}); return Result; } /// The parser has read a name in, and Sema has detected that we're currently /// inside an ObjC method. Perform some additional checks and determine if we /// should form a reference to an ivar. If so, build an expression referencing /// that ivar. ExprResult Sema::LookupInObjCMethod(LookupResult &Lookup, Scope *S, IdentifierInfo *II, bool AllowBuiltinCreation) { // FIXME: Integrate this lookup step into LookupParsedName. DeclResult Ivar = LookupIvarInObjCMethod(Lookup, S, II); if (Ivar.isInvalid()) return ExprError(); if (Ivar.isUsable()) return BuildIvarRefExpr(S, Lookup.getNameLoc(), cast(Ivar.get())); if (Lookup.empty() && II && AllowBuiltinCreation) LookupBuiltin(Lookup); // Sentinel value saying that we didn't do anything special. return ExprResult(false); } /// Cast a base object to a member's actual type. /// /// There are two relevant checks: /// /// C++ [class.access.base]p7: /// /// If a class member access operator [...] is used to access a non-static /// data member or non-static member function, the reference is ill-formed if /// the left operand [...] cannot be implicitly converted to a pointer to the /// naming class of the right operand. /// /// C++ [expr.ref]p7: /// /// If E2 is a non-static data member or a non-static member function, the /// program is ill-formed if the class of which E2 is directly a member is an /// ambiguous base (11.8) of the naming class (11.9.3) of E2. /// /// Note that the latter check does not consider access; the access of the /// "real" base class is checked as appropriate when checking the access of the /// member name. ExprResult Sema::PerformObjectMemberConversion(Expr *From, NestedNameSpecifier *Qualifier, NamedDecl *FoundDecl, NamedDecl *Member) { CXXRecordDecl *RD = dyn_cast(Member->getDeclContext()); if (!RD) return From; QualType DestRecordType; QualType DestType; QualType FromRecordType; QualType FromType = From->getType(); bool PointerConversions = false; if (isa(Member)) { DestRecordType = Context.getCanonicalType(Context.getTypeDeclType(RD)); auto FromPtrType = FromType->getAs(); DestRecordType = Context.getAddrSpaceQualType( DestRecordType, FromPtrType ? FromType->getPointeeType().getAddressSpace() : FromType.getAddressSpace()); if (FromPtrType) { DestType = Context.getPointerType(DestRecordType); FromRecordType = FromPtrType->getPointeeType(); PointerConversions = true; } else { DestType = DestRecordType; FromRecordType = FromType; } } else if (CXXMethodDecl *Method = dyn_cast(Member)) { if (Method->isStatic()) return From; DestType = Method->getThisType(); DestRecordType = DestType->getPointeeType(); if (FromType->getAs()) { FromRecordType = FromType->getPointeeType(); PointerConversions = true; } else { FromRecordType = FromType; DestType = DestRecordType; } LangAS FromAS = FromRecordType.getAddressSpace(); LangAS DestAS = DestRecordType.getAddressSpace(); if (FromAS != DestAS) { QualType FromRecordTypeWithoutAS = Context.removeAddrSpaceQualType(FromRecordType); QualType FromTypeWithDestAS = Context.getAddrSpaceQualType(FromRecordTypeWithoutAS, DestAS); if (PointerConversions) FromTypeWithDestAS = Context.getPointerType(FromTypeWithDestAS); From = ImpCastExprToType(From, FromTypeWithDestAS, CK_AddressSpaceConversion, From->getValueKind()) .get(); } } else { // No conversion necessary. return From; } if (DestType->isDependentType() || FromType->isDependentType()) return From; // If the unqualified types are the same, no conversion is necessary. if (Context.hasSameUnqualifiedType(FromRecordType, DestRecordType)) return From; SourceRange FromRange = From->getSourceRange(); SourceLocation FromLoc = FromRange.getBegin(); ExprValueKind VK = From->getValueKind(); // C++ [class.member.lookup]p8: // [...] Ambiguities can often be resolved by qualifying a name with its // class name. // // If the member was a qualified name and the qualified referred to a // specific base subobject type, we'll cast to that intermediate type // first and then to the object in which the member is declared. That allows // one to resolve ambiguities in, e.g., a diamond-shaped hierarchy such as: // // class Base { public: int x; }; // class Derived1 : public Base { }; // class Derived2 : public Base { }; // class VeryDerived : public Derived1, public Derived2 { void f(); }; // // void VeryDerived::f() { // x = 17; // error: ambiguous base subobjects // Derived1::x = 17; // okay, pick the Base subobject of Derived1 // } if (Qualifier && Qualifier->getAsType()) { QualType QType = QualType(Qualifier->getAsType(), 0); assert(QType->isRecordType() && "lookup done with non-record type"); QualType QRecordType = QualType(QType->getAs(), 0); // In C++98, the qualifier type doesn't actually have to be a base // type of the object type, in which case we just ignore it. // Otherwise build the appropriate casts. if (IsDerivedFrom(FromLoc, FromRecordType, QRecordType)) { CXXCastPath BasePath; if (CheckDerivedToBaseConversion(FromRecordType, QRecordType, FromLoc, FromRange, &BasePath)) return ExprError(); if (PointerConversions) QType = Context.getPointerType(QType); From = ImpCastExprToType(From, QType, CK_UncheckedDerivedToBase, VK, &BasePath).get(); FromType = QType; FromRecordType = QRecordType; // If the qualifier type was the same as the destination type, // we're done. if (Context.hasSameUnqualifiedType(FromRecordType, DestRecordType)) return From; } } CXXCastPath BasePath; if (CheckDerivedToBaseConversion(FromRecordType, DestRecordType, FromLoc, FromRange, &BasePath, /*IgnoreAccess=*/true)) return ExprError(); return ImpCastExprToType(From, DestType, CK_UncheckedDerivedToBase, VK, &BasePath); } bool Sema::UseArgumentDependentLookup(const CXXScopeSpec &SS, const LookupResult &R, bool HasTrailingLParen) { // Only when used directly as the postfix-expression of a call. if (!HasTrailingLParen) return false; // Never if a scope specifier was provided. if (SS.isSet()) return false; // Only in C++ or ObjC++. if (!getLangOpts().CPlusPlus) return false; // Turn off ADL when we find certain kinds of declarations during // normal lookup: for (NamedDecl *D : R) { // C++0x [basic.lookup.argdep]p3: // -- a declaration of a class member // Since using decls preserve this property, we check this on the // original decl. if (D->isCXXClassMember()) return false; // C++0x [basic.lookup.argdep]p3: // -- a block-scope function declaration that is not a // using-declaration // NOTE: we also trigger this for function templates (in fact, we // don't check the decl type at all, since all other decl types // turn off ADL anyway). if (isa(D)) D = cast(D)->getTargetDecl(); else if (D->getLexicalDeclContext()->isFunctionOrMethod()) return false; // C++0x [basic.lookup.argdep]p3: // -- a declaration that is neither a function or a function // template // And also for builtin functions. if (isa(D)) { FunctionDecl *FDecl = cast(D); // But also builtin functions. if (FDecl->getBuiltinID() && FDecl->isImplicit()) return false; } else if (!isa(D)) return false; } return true; } /// Diagnoses obvious problems with the use of the given declaration /// as an expression. This is only actually called for lookups that /// were not overloaded, and it doesn't promise that the declaration /// will in fact be used. static bool CheckDeclInExpr(Sema &S, SourceLocation Loc, NamedDecl *D) { if (D->isInvalidDecl()) return true; if (isa(D)) { S.Diag(Loc, diag::err_unexpected_typedef) << D->getDeclName(); return true; } if (isa(D)) { S.Diag(Loc, diag::err_unexpected_interface) << D->getDeclName(); return true; } if (isa(D)) { S.Diag(Loc, diag::err_unexpected_namespace) << D->getDeclName(); return true; } return false; } // Certain multiversion types should be treated as overloaded even when there is // only one result. static bool ShouldLookupResultBeMultiVersionOverload(const LookupResult &R) { assert(R.isSingleResult() && "Expected only a single result"); const auto *FD = dyn_cast(R.getFoundDecl()); return FD && (FD->isCPUDispatchMultiVersion() || FD->isCPUSpecificMultiVersion()); } ExprResult Sema::BuildDeclarationNameExpr(const CXXScopeSpec &SS, LookupResult &R, bool NeedsADL, bool AcceptInvalidDecl) { // If this is a single, fully-resolved result and we don't need ADL, // just build an ordinary singleton decl ref. if (!NeedsADL && R.isSingleResult() && !R.getAsSingle() && !ShouldLookupResultBeMultiVersionOverload(R)) return BuildDeclarationNameExpr(SS, R.getLookupNameInfo(), R.getFoundDecl(), R.getRepresentativeDecl(), nullptr, AcceptInvalidDecl); // We only need to check the declaration if there's exactly one // result, because in the overloaded case the results can only be // functions and function templates. if (R.isSingleResult() && !ShouldLookupResultBeMultiVersionOverload(R) && CheckDeclInExpr(*this, R.getNameLoc(), R.getFoundDecl())) return ExprError(); // Otherwise, just build an unresolved lookup expression. Suppress // any lookup-related diagnostics; we'll hash these out later, when // we've picked a target. R.suppressDiagnostics(); UnresolvedLookupExpr *ULE = UnresolvedLookupExpr::Create(Context, R.getNamingClass(), SS.getWithLocInContext(Context), R.getLookupNameInfo(), NeedsADL, R.isOverloadedResult(), R.begin(), R.end()); return ULE; } static void diagnoseUncapturableValueReference(Sema &S, SourceLocation loc, ValueDecl *var, DeclContext *DC); /// Complete semantic analysis for a reference to the given declaration. ExprResult Sema::BuildDeclarationNameExpr( const CXXScopeSpec &SS, const DeclarationNameInfo &NameInfo, NamedDecl *D, NamedDecl *FoundD, const TemplateArgumentListInfo *TemplateArgs, bool AcceptInvalidDecl) { assert(D && "Cannot refer to a NULL declaration"); assert(!isa(D) && "Cannot refer unambiguously to a function template"); SourceLocation Loc = NameInfo.getLoc(); if (CheckDeclInExpr(*this, Loc, D)) return ExprError(); if (TemplateDecl *Template = dyn_cast(D)) { // Specifically diagnose references to class templates that are missing // a template argument list. diagnoseMissingTemplateArguments(TemplateName(Template), Loc); return ExprError(); } // Make sure that we're referring to a value. ValueDecl *VD = dyn_cast(D); if (!VD) { Diag(Loc, diag::err_ref_non_value) << D << SS.getRange(); Diag(D->getLocation(), diag::note_declared_at); return ExprError(); } // Check whether this declaration can be used. Note that we suppress // this check when we're going to perform argument-dependent lookup // on this function name, because this might not be the function // that overload resolution actually selects. if (DiagnoseUseOfDecl(VD, Loc)) return ExprError(); // Only create DeclRefExpr's for valid Decl's. if (VD->isInvalidDecl() && !AcceptInvalidDecl) return ExprError(); // Handle members of anonymous structs and unions. If we got here, // and the reference is to a class member indirect field, then this // must be the subject of a pointer-to-member expression. if (IndirectFieldDecl *indirectField = dyn_cast(VD)) if (!indirectField->isCXXClassMember()) return BuildAnonymousStructUnionMemberReference(SS, NameInfo.getLoc(), indirectField); { QualType type = VD->getType(); if (type.isNull()) return ExprError(); ExprValueKind valueKind = VK_RValue; // In 'T ...V;', the type of the declaration 'V' is 'T...', but the type of // a reference to 'V' is simply (unexpanded) 'T'. The type, like the value, // is expanded by some outer '...' in the context of the use. type = type.getNonPackExpansionType(); switch (D->getKind()) { // Ignore all the non-ValueDecl kinds. #define ABSTRACT_DECL(kind) #define VALUE(type, base) #define DECL(type, base) \ case Decl::type: #include "clang/AST/DeclNodes.inc" llvm_unreachable("invalid value decl kind"); // These shouldn't make it here. case Decl::ObjCAtDefsField: llvm_unreachable("forming non-member reference to ivar?"); // Enum constants are always r-values and never references. // Unresolved using declarations are dependent. case Decl::EnumConstant: case Decl::UnresolvedUsingValue: case Decl::OMPDeclareReduction: case Decl::OMPDeclareMapper: valueKind = VK_RValue; break; // Fields and indirect fields that got here must be for // pointer-to-member expressions; we just call them l-values for // internal consistency, because this subexpression doesn't really // exist in the high-level semantics. case Decl::Field: case Decl::IndirectField: case Decl::ObjCIvar: assert(getLangOpts().CPlusPlus && "building reference to field in C?"); // These can't have reference type in well-formed programs, but // for internal consistency we do this anyway. type = type.getNonReferenceType(); valueKind = VK_LValue; break; // Non-type template parameters are either l-values or r-values // depending on the type. case Decl::NonTypeTemplateParm: { if (const ReferenceType *reftype = type->getAs()) { type = reftype->getPointeeType(); valueKind = VK_LValue; // even if the parameter is an r-value reference break; } // [expr.prim.id.unqual]p2: // If the entity is a template parameter object for a template // parameter of type T, the type of the expression is const T. // [...] The expression is an lvalue if the entity is a [...] template // parameter object. if (type->isRecordType()) { type = type.getUnqualifiedType().withConst(); valueKind = VK_LValue; break; } // For non-references, we need to strip qualifiers just in case // the template parameter was declared as 'const int' or whatever. valueKind = VK_RValue; type = type.getUnqualifiedType(); break; } case Decl::Var: case Decl::VarTemplateSpecialization: case Decl::VarTemplatePartialSpecialization: case Decl::Decomposition: case Decl::OMPCapturedExpr: // In C, "extern void blah;" is valid and is an r-value. if (!getLangOpts().CPlusPlus && !type.hasQualifiers() && type->isVoidType()) { valueKind = VK_RValue; break; } LLVM_FALLTHROUGH; case Decl::ImplicitParam: case Decl::ParmVar: { // These are always l-values. valueKind = VK_LValue; type = type.getNonReferenceType(); // FIXME: Does the addition of const really only apply in // potentially-evaluated contexts? Since the variable isn't actually // captured in an unevaluated context, it seems that the answer is no. if (!isUnevaluatedContext()) { QualType CapturedType = getCapturedDeclRefType(cast(VD), Loc); if (!CapturedType.isNull()) type = CapturedType; } break; } case Decl::Binding: { // These are always lvalues. valueKind = VK_LValue; type = type.getNonReferenceType(); // FIXME: Support lambda-capture of BindingDecls, once CWG actually // decides how that's supposed to work. auto *BD = cast(VD); if (BD->getDeclContext() != CurContext) { auto *DD = dyn_cast_or_null(BD->getDecomposedDecl()); if (DD && DD->hasLocalStorage()) diagnoseUncapturableValueReference(*this, Loc, BD, CurContext); } break; } case Decl::Function: { if (unsigned BID = cast(VD)->getBuiltinID()) { if (!Context.BuiltinInfo.isPredefinedLibFunction(BID)) { type = Context.BuiltinFnTy; valueKind = VK_RValue; break; } } const FunctionType *fty = type->castAs(); // If we're referring to a function with an __unknown_anytype // result type, make the entire expression __unknown_anytype. if (fty->getReturnType() == Context.UnknownAnyTy) { type = Context.UnknownAnyTy; valueKind = VK_RValue; break; } // Functions are l-values in C++. if (getLangOpts().CPlusPlus) { valueKind = VK_LValue; break; } // C99 DR 316 says that, if a function type comes from a // function definition (without a prototype), that type is only // used for checking compatibility. Therefore, when referencing // the function, we pretend that we don't have the full function // type. if (!cast(VD)->hasPrototype() && isa(fty)) type = Context.getFunctionNoProtoType(fty->getReturnType(), fty->getExtInfo()); // Functions are r-values in C. valueKind = VK_RValue; break; } case Decl::CXXDeductionGuide: llvm_unreachable("building reference to deduction guide"); case Decl::MSProperty: case Decl::MSGuid: case Decl::TemplateParamObject: // FIXME: Should MSGuidDecl and template parameter objects be subject to // capture in OpenMP, or duplicated between host and device? valueKind = VK_LValue; break; case Decl::CXXMethod: // If we're referring to a method with an __unknown_anytype // result type, make the entire expression __unknown_anytype. // This should only be possible with a type written directly. if (const FunctionProtoType *proto = dyn_cast(VD->getType())) if (proto->getReturnType() == Context.UnknownAnyTy) { type = Context.UnknownAnyTy; valueKind = VK_RValue; break; } // C++ methods are l-values if static, r-values if non-static. if (cast(VD)->isStatic()) { valueKind = VK_LValue; break; } LLVM_FALLTHROUGH; case Decl::CXXConversion: case Decl::CXXDestructor: case Decl::CXXConstructor: valueKind = VK_RValue; break; } return BuildDeclRefExpr(VD, type, valueKind, NameInfo, &SS, FoundD, /*FIXME: TemplateKWLoc*/ SourceLocation(), TemplateArgs); } } static void ConvertUTF8ToWideString(unsigned CharByteWidth, StringRef Source, SmallString<32> &Target) { Target.resize(CharByteWidth * (Source.size() + 1)); char *ResultPtr = &Target[0]; const llvm::UTF8 *ErrorPtr; bool success = llvm::ConvertUTF8toWide(CharByteWidth, Source, ResultPtr, ErrorPtr); (void)success; assert(success); Target.resize(ResultPtr - &Target[0]); } ExprResult Sema::BuildPredefinedExpr(SourceLocation Loc, PredefinedExpr::IdentKind IK) { // Pick the current block, lambda, captured statement or function. Decl *currentDecl = nullptr; if (const BlockScopeInfo *BSI = getCurBlock()) currentDecl = BSI->TheDecl; else if (const LambdaScopeInfo *LSI = getCurLambda()) currentDecl = LSI->CallOperator; else if (const CapturedRegionScopeInfo *CSI = getCurCapturedRegion()) currentDecl = CSI->TheCapturedDecl; else currentDecl = getCurFunctionOrMethodDecl(); if (!currentDecl) { Diag(Loc, diag::ext_predef_outside_function); currentDecl = Context.getTranslationUnitDecl(); } QualType ResTy; StringLiteral *SL = nullptr; if (cast(currentDecl)->isDependentContext()) ResTy = Context.DependentTy; else { // Pre-defined identifiers are of type char[x], where x is the length of // the string. auto Str = PredefinedExpr::ComputeName(IK, currentDecl); unsigned Length = Str.length(); llvm::APInt LengthI(32, Length + 1); if (IK == PredefinedExpr::LFunction || IK == PredefinedExpr::LFuncSig) { ResTy = Context.adjustStringLiteralBaseType(Context.WideCharTy.withConst()); SmallString<32> RawChars; ConvertUTF8ToWideString(Context.getTypeSizeInChars(ResTy).getQuantity(), Str, RawChars); ResTy = Context.getConstantArrayType(ResTy, LengthI, nullptr, ArrayType::Normal, /*IndexTypeQuals*/ 0); SL = StringLiteral::Create(Context, RawChars, StringLiteral::Wide, /*Pascal*/ false, ResTy, Loc); } else { ResTy = Context.adjustStringLiteralBaseType(Context.CharTy.withConst()); ResTy = Context.getConstantArrayType(ResTy, LengthI, nullptr, ArrayType::Normal, /*IndexTypeQuals*/ 0); SL = StringLiteral::Create(Context, Str, StringLiteral::Ascii, /*Pascal*/ false, ResTy, Loc); } } return PredefinedExpr::Create(Context, Loc, ResTy, IK, SL); } ExprResult Sema::ActOnPredefinedExpr(SourceLocation Loc, tok::TokenKind Kind) { PredefinedExpr::IdentKind IK; switch (Kind) { default: llvm_unreachable("Unknown simple primary expr!"); case tok::kw___func__: IK = PredefinedExpr::Func; break; // [C99 6.4.2.2] case tok::kw___FUNCTION__: IK = PredefinedExpr::Function; break; case tok::kw___FUNCDNAME__: IK = PredefinedExpr::FuncDName; break; // [MS] case tok::kw___FUNCSIG__: IK = PredefinedExpr::FuncSig; break; // [MS] case tok::kw_L__FUNCTION__: IK = PredefinedExpr::LFunction; break; // [MS] case tok::kw_L__FUNCSIG__: IK = PredefinedExpr::LFuncSig; break; // [MS] case tok::kw___PRETTY_FUNCTION__: IK = PredefinedExpr::PrettyFunction; break; } return BuildPredefinedExpr(Loc, IK); } ExprResult Sema::ActOnCharacterConstant(const Token &Tok, Scope *UDLScope) { SmallString<16> CharBuffer; bool Invalid = false; StringRef ThisTok = PP.getSpelling(Tok, CharBuffer, &Invalid); if (Invalid) return ExprError(); CharLiteralParser Literal(ThisTok.begin(), ThisTok.end(), Tok.getLocation(), PP, Tok.getKind()); if (Literal.hadError()) return ExprError(); QualType Ty; if (Literal.isWide()) Ty = Context.WideCharTy; // L'x' -> wchar_t in C and C++. else if (Literal.isUTF8() && getLangOpts().Char8) Ty = Context.Char8Ty; // u8'x' -> char8_t when it exists. else if (Literal.isUTF16()) Ty = Context.Char16Ty; // u'x' -> char16_t in C11 and C++11. else if (Literal.isUTF32()) Ty = Context.Char32Ty; // U'x' -> char32_t in C11 and C++11. else if (!getLangOpts().CPlusPlus || Literal.isMultiChar()) Ty = Context.IntTy; // 'x' -> int in C, 'wxyz' -> int in C++. else Ty = Context.CharTy; // 'x' -> char in C++ CharacterLiteral::CharacterKind Kind = CharacterLiteral::Ascii; if (Literal.isWide()) Kind = CharacterLiteral::Wide; else if (Literal.isUTF16()) Kind = CharacterLiteral::UTF16; else if (Literal.isUTF32()) Kind = CharacterLiteral::UTF32; else if (Literal.isUTF8()) Kind = CharacterLiteral::UTF8; Expr *Lit = new (Context) CharacterLiteral(Literal.getValue(), Kind, Ty, Tok.getLocation()); if (Literal.getUDSuffix().empty()) return Lit; // We're building a user-defined literal. IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); SourceLocation UDSuffixLoc = getUDSuffixLoc(*this, Tok.getLocation(), Literal.getUDSuffixOffset()); // Make sure we're allowed user-defined literals here. if (!UDLScope) return ExprError(Diag(UDSuffixLoc, diag::err_invalid_character_udl)); // C++11 [lex.ext]p6: The literal L is treated as a call of the form // operator "" X (ch) return BuildCookedLiteralOperatorCall(*this, UDLScope, UDSuffix, UDSuffixLoc, Lit, Tok.getLocation()); } ExprResult Sema::ActOnIntegerConstant(SourceLocation Loc, uint64_t Val) { unsigned IntSize = Context.getTargetInfo().getIntWidth(); return IntegerLiteral::Create(Context, llvm::APInt(IntSize, Val), Context.IntTy, Loc); } static Expr *BuildFloatingLiteral(Sema &S, NumericLiteralParser &Literal, QualType Ty, SourceLocation Loc) { const llvm::fltSemantics &Format = S.Context.getFloatTypeSemantics(Ty); using llvm::APFloat; APFloat Val(Format); APFloat::opStatus result = Literal.GetFloatValue(Val); // Overflow is always an error, but underflow is only an error if // we underflowed to zero (APFloat reports denormals as underflow). if ((result & APFloat::opOverflow) || ((result & APFloat::opUnderflow) && Val.isZero())) { unsigned diagnostic; SmallString<20> buffer; if (result & APFloat::opOverflow) { diagnostic = diag::warn_float_overflow; APFloat::getLargest(Format).toString(buffer); } else { diagnostic = diag::warn_float_underflow; APFloat::getSmallest(Format).toString(buffer); } S.Diag(Loc, diagnostic) << Ty << StringRef(buffer.data(), buffer.size()); } bool isExact = (result == APFloat::opOK); return FloatingLiteral::Create(S.Context, Val, isExact, Ty, Loc); } bool Sema::CheckLoopHintExpr(Expr *E, SourceLocation Loc) { assert(E && "Invalid expression"); if (E->isValueDependent()) return false; QualType QT = E->getType(); if (!QT->isIntegerType() || QT->isBooleanType() || QT->isCharType()) { Diag(E->getExprLoc(), diag::err_pragma_loop_invalid_argument_type) << QT; return true; } llvm::APSInt ValueAPS; ExprResult R = VerifyIntegerConstantExpression(E, &ValueAPS); if (R.isInvalid()) return true; bool ValueIsPositive = ValueAPS.isStrictlyPositive(); if (!ValueIsPositive || ValueAPS.getActiveBits() > 31) { Diag(E->getExprLoc(), diag::err_pragma_loop_invalid_argument_value) << ValueAPS.toString(10) << ValueIsPositive; return true; } return false; } ExprResult Sema::ActOnNumericConstant(const Token &Tok, Scope *UDLScope) { // Fast path for a single digit (which is quite common). A single digit // cannot have a trigraph, escaped newline, radix prefix, or suffix. if (Tok.getLength() == 1) { const char Val = PP.getSpellingOfSingleCharacterNumericConstant(Tok); return ActOnIntegerConstant(Tok.getLocation(), Val-'0'); } SmallString<128> SpellingBuffer; // NumericLiteralParser wants to overread by one character. Add padding to // the buffer in case the token is copied to the buffer. If getSpelling() // returns a StringRef to the memory buffer, it should have a null char at // the EOF, so it is also safe. SpellingBuffer.resize(Tok.getLength() + 1); // Get the spelling of the token, which eliminates trigraphs, etc. bool Invalid = false; StringRef TokSpelling = PP.getSpelling(Tok, SpellingBuffer, &Invalid); if (Invalid) return ExprError(); NumericLiteralParser Literal(TokSpelling, Tok.getLocation(), PP.getSourceManager(), PP.getLangOpts(), PP.getTargetInfo(), PP.getDiagnostics()); if (Literal.hadError) return ExprError(); if (Literal.hasUDSuffix()) { // We're building a user-defined literal. IdentifierInfo *UDSuffix = &Context.Idents.get(Literal.getUDSuffix()); SourceLocation UDSuffixLoc = getUDSuffixLoc(*this, Tok.getLocation(), Literal.getUDSuffixOffset()); // Make sure we're allowed user-defined literals here. if (!UDLScope) return ExprError(Diag(UDSuffixLoc, diag::err_invalid_numeric_udl)); QualType CookedTy; if (Literal.isFloatingLiteral()) { // C++11 [lex.ext]p4: If S contains a literal operator with parameter type // long double, the literal is treated as a call of the form // operator "" X (f L) CookedTy = Context.LongDoubleTy; } else { // C++11 [lex.ext]p3: If S contains a literal operator with parameter type // unsigned long long, the literal is treated as a call of the form // operator "" X (n ULL) CookedTy = Context.UnsignedLongLongTy; } DeclarationName OpName = Context.DeclarationNames.getCXXLiteralOperatorName(UDSuffix); DeclarationNameInfo OpNameInfo(OpName, UDSuffixLoc); OpNameInfo.setCXXLiteralOperatorNameLoc(UDSuffixLoc); SourceLocation TokLoc = Tok.getLocation(); // Perform literal operator lookup to determine if we're building a raw // literal or a cooked one. LookupResult R(*this, OpName, UDSuffixLoc, LookupOrdinaryName); switch (LookupLiteralOperator(UDLScope, R, CookedTy, /*AllowRaw*/ true, /*AllowTemplate*/ true, /*AllowStringTemplatePack*/ false, /*DiagnoseMissing*/ !Literal.isImaginary)) { case LOLR_ErrorNoDiagnostic: // Lookup failure for imaginary constants isn't fatal, there's still the // GNU extension producing _Complex types. break; case LOLR_Error: return ExprError(); case LOLR_Cooked: { Expr *Lit; if (Literal.isFloatingLiteral()) { Lit = BuildFloatingLiteral(*this, Literal, CookedTy, Tok.getLocation()); } else { llvm::APInt ResultVal(Context.getTargetInfo().getLongLongWidth(), 0); if (Literal.GetIntegerValue(ResultVal)) Diag(Tok.getLocation(), diag::err_integer_literal_too_large) << /* Unsigned */ 1; Lit = IntegerLiteral::Create(Context, ResultVal, CookedTy, Tok.getLocation()); } return BuildLiteralOperatorCall(R, OpNameInfo, Lit, TokLoc); } case LOLR_Raw: { // C++11 [lit.ext]p3, p4: If S contains a raw literal operator, the // literal is treated as a call of the form // operator "" X ("n") unsigned Length = Literal.getUDSuffixOffset(); QualType StrTy = Context.getConstantArrayType( Context.adjustStringLiteralBaseType(Context.CharTy.withConst()), llvm::APInt(32, Length + 1), nullptr, ArrayType::Normal, 0); Expr *Lit = StringLiteral::Create( Context, StringRef(TokSpelling.data(), Length), StringLiteral::Ascii, /*Pascal*/false, StrTy, &TokLoc, 1); return BuildLiteralOperatorCall(R, OpNameInfo, Lit, TokLoc); } case LOLR_Template: { // C++11 [lit.ext]p3, p4: Otherwise (S contains a literal operator // template), L is treated as a call fo the form // operator "" X <'c1', 'c2', ... 'ck'>() // where n is the source character sequence c1 c2 ... ck. TemplateArgumentListInfo ExplicitArgs; unsigned CharBits = Context.getIntWidth(Context.CharTy); bool CharIsUnsigned = Context.CharTy->isUnsignedIntegerType(); llvm::APSInt Value(CharBits, CharIsUnsigned); for (unsigned I = 0, N = Literal.getUDSuffixOffset(); I != N; ++I) { Value = TokSpelling[I]; TemplateArgument Arg(Context, Value, Context.CharTy); TemplateArgumentLocInfo ArgInfo; ExplicitArgs.addArgument(TemplateArgumentLoc(Arg, ArgInfo)); } return BuildLiteralOperatorCall(R, OpNameInfo, None, TokLoc, &ExplicitArgs); } case LOLR_StringTemplatePack: llvm_unreachable("unexpected literal operator lookup result"); } } Expr *Res; if (Literal.isFixedPointLiteral()) { QualType Ty; if (Literal.isAccum) { if (Literal.isHalf) { Ty = Context.ShortAccumTy; } else if (Literal.isLong) { Ty = Context.LongAccumTy; } else { Ty = Context.AccumTy; } } else if (Literal.isFract) { if (Literal.isHalf) { Ty = Context.ShortFractTy; } else if (Literal.isLong) { Ty = Context.LongFractTy; } else { Ty = Context.FractTy; } } if (Literal.isUnsigned) Ty = Context.getCorrespondingUnsignedType(Ty); bool isSigned = !Literal.isUnsigned; unsigned scale = Context.getFixedPointScale(Ty); unsigned bit_width = Context.getTypeInfo(Ty).Width; llvm::APInt Val(bit_width, 0, isSigned); bool Overflowed = Literal.GetFixedPointValue(Val, scale); bool ValIsZero = Val.isNullValue() && !Overflowed; auto MaxVal = Context.getFixedPointMax(Ty).getValue(); if (Literal.isFract && Val == MaxVal + 1 && !ValIsZero) // Clause 6.4.4 - The value of a constant shall be in the range of // representable values for its type, with exception for constants of a // fract type with a value of exactly 1; such a constant shall denote // the maximal value for the type. --Val; else if (Val.ugt(MaxVal) || Overflowed) Diag(Tok.getLocation(), diag::err_too_large_for_fixed_point); Res = FixedPointLiteral::CreateFromRawInt(Context, Val, Ty, Tok.getLocation(), scale); } else if (Literal.isFloatingLiteral()) { QualType Ty; if (Literal.isHalf){ if (getOpenCLOptions().isEnabled("cl_khr_fp16")) Ty = Context.HalfTy; else { Diag(Tok.getLocation(), diag::err_half_const_requires_fp16); return ExprError(); } } else if (Literal.isFloat) Ty = Context.FloatTy; else if (Literal.isLong) Ty = Context.LongDoubleTy; else if (Literal.isFloat16) Ty = Context.Float16Ty; else if (Literal.isFloat128) Ty = Context.Float128Ty; else Ty = Context.DoubleTy; Res = BuildFloatingLiteral(*this, Literal, Ty, Tok.getLocation()); if (Ty == Context.DoubleTy) { if (getLangOpts().SinglePrecisionConstants) { if (Ty->castAs()->getKind() != BuiltinType::Float) { Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get(); } } else if (getLangOpts().OpenCL && !getOpenCLOptions().isEnabled("cl_khr_fp64")) { // Impose single-precision float type when cl_khr_fp64 is not enabled. Diag(Tok.getLocation(), diag::warn_double_const_requires_fp64); Res = ImpCastExprToType(Res, Context.FloatTy, CK_FloatingCast).get(); } } } else if (!Literal.isIntegerLiteral()) { return ExprError(); } else { QualType Ty; // 'long long' is a C99 or C++11 feature. if (!getLangOpts().C99 && Literal.isLongLong) { if (getLangOpts().CPlusPlus) Diag(Tok.getLocation(), getLangOpts().CPlusPlus11 ? diag::warn_cxx98_compat_longlong : diag::ext_cxx11_longlong); else Diag(Tok.getLocation(), diag::ext_c99_longlong); } // Get the value in the widest-possible width. unsigned MaxWidth = Context.getTargetInfo().getIntMaxTWidth(); llvm::APInt ResultVal(MaxWidth, 0); if (Literal.GetIntegerValue(ResultVal)) { // If this value didn't fit into uintmax_t, error and force to ull. Diag(Tok.getLocation(), diag::err_integer_literal_too_large) << /* Unsigned */ 1; Ty = Context.UnsignedLongLongTy; assert(Context.getTypeSize(Ty) == ResultVal.getBitWidth() && "long long is not intmax_t?"); } else { // If this value fits into a ULL, try to figure out what else it fits into // according to the rules of C99 6.4.4.1p5. // Octal, Hexadecimal, and integers with a U suffix are allowed to // be an unsigned int. bool AllowUnsigned = Literal.isUnsigned || Literal.getRadix() != 10; // Check from smallest to largest, picking the smallest type we can. unsigned Width = 0; // Microsoft specific integer suffixes are explicitly sized. if (Literal.MicrosoftInteger) { if (Literal.MicrosoftInteger == 8 && !Literal.isUnsigned) { Width = 8; Ty = Context.CharTy; } else { Width = Literal.MicrosoftInteger; Ty = Context.getIntTypeForBitwidth(Width, /*Signed=*/!Literal.isUnsigned); } } if (Ty.isNull() && !Literal.isLong && !Literal.isLongLong) { // Are int/unsigned possibilities? unsigned IntSize = Context.getTargetInfo().getIntWidth(); // Does it fit in a unsigned int? if (ResultVal.isIntN(IntSize)) { // Does it fit in a signed int? if (!Literal.isUnsigned && ResultVal[IntSize-1] == 0) Ty = Context.IntTy; else if (AllowUnsigned) Ty = Context.UnsignedIntTy; Width = IntSize; } } // Are long/unsigned long possibilities? if (Ty.isNull() && !Literal.isLongLong) { unsigned LongSize = Context.getTargetInfo().getLongWidth(); // Does it fit in a unsigned long? if (ResultVal.isIntN(LongSize)) { // Does it fit in a signed long? if (!Literal.isUnsigned && ResultVal[LongSize-1] == 0) Ty = Context.LongTy; else if (AllowUnsigned) Ty = Context.UnsignedLongTy; // Check according to the rules of C90 6.1.3.2p5. C++03 [lex.icon]p2 // is compatible. else if (!getLangOpts().C99 && !getLangOpts().CPlusPlus11) { const unsigned LongLongSize = Context.getTargetInfo().getLongLongWidth(); Diag(Tok.getLocation(), getLangOpts().CPlusPlus ? Literal.isLong ? diag::warn_old_implicitly_unsigned_long_cxx : /*C++98 UB*/ diag:: ext_old_implicitly_unsigned_long_cxx : diag::warn_old_implicitly_unsigned_long) << (LongLongSize > LongSize ? /*will have type 'long long'*/ 0 : /*will be ill-formed*/ 1); Ty = Context.UnsignedLongTy; } Width = LongSize; } } // Check long long if needed. if (Ty.isNull()) { unsigned LongLongSize = Context.getTargetInfo().getLongLongWidth(); // Does it fit in a unsigned long long? if (ResultVal.isIntN(LongLongSize)) { // Does it fit in a signed long long? // To be compatible with MSVC, hex integer literals ending with the // LL or i64 suffix are always signed in Microsoft mode. if (!Literal.isUnsigned && (ResultVal[LongLongSize-1] == 0 || (getLangOpts().MSVCCompat && Literal.isLongLong))) Ty = Context.LongLongTy; else if (AllowUnsigned) Ty = Context.UnsignedLongLongTy; Width = LongLongSize; } } // If we still couldn't decide a type, we probably have something that // does not fit in a signed long long, but has no U suffix. if (Ty.isNull()) { Diag(Tok.getLocation(), diag::ext_integer_literal_too_large_for_signed); Ty = Context.UnsignedLongLongTy; Width = Context.getTargetInfo().getLongLongWidth(); } if (ResultVal.getBitWidth() != Width) ResultVal = ResultVal.trunc(Width); } Res = IntegerLiteral::Create(Context, ResultVal, Ty, Tok.getLocation()); } // If this is an imaginary literal, create the ImaginaryLiteral wrapper. if (Literal.isImaginary) { Res = new (Context) ImaginaryLiteral(Res, Context.getComplexType(Res->getType())); Diag(Tok.getLocation(), diag::ext_imaginary_constant); } return Res; } ExprResult Sema::ActOnParenExpr(SourceLocation L, SourceLocation R, Expr *E) { assert(E && "ActOnParenExpr() missing expr"); return new (Context) ParenExpr(L, R, E); } static bool CheckVecStepTraitOperandType(Sema &S, QualType T, SourceLocation Loc, SourceRange ArgRange) { // [OpenCL 1.1 6.11.12] "The vec_step built-in function takes a built-in // scalar or vector data type argument..." // Every built-in scalar type (OpenCL 1.1 6.1.1) is either an arithmetic // type (C99 6.2.5p18) or void. if (!(T->isArithmeticType() || T->isVoidType() || T->isVectorType())) { S.Diag(Loc, diag::err_vecstep_non_scalar_vector_type) << T << ArgRange; return true; } assert((T->isVoidType() || !T->isIncompleteType()) && "Scalar types should always be complete"); return false; } static bool CheckExtensionTraitOperandType(Sema &S, QualType T, SourceLocation Loc, SourceRange ArgRange, UnaryExprOrTypeTrait TraitKind) { // Invalid types must be hard errors for SFINAE in C++. if (S.LangOpts.CPlusPlus) return true; // C99 6.5.3.4p1: if (T->isFunctionType() && (TraitKind == UETT_SizeOf || TraitKind == UETT_AlignOf || TraitKind == UETT_PreferredAlignOf)) { // sizeof(function)/alignof(function) is allowed as an extension. S.Diag(Loc, diag::ext_sizeof_alignof_function_type) << getTraitSpelling(TraitKind) << ArgRange; return false; } // Allow sizeof(void)/alignof(void) as an extension, unless in OpenCL where // this is an error (OpenCL v1.1 s6.3.k) if (T->isVoidType()) { unsigned DiagID = S.LangOpts.OpenCL ? diag::err_opencl_sizeof_alignof_type : diag::ext_sizeof_alignof_void_type; S.Diag(Loc, DiagID) << getTraitSpelling(TraitKind) << ArgRange; return false; } return true; } static bool CheckObjCTraitOperandConstraints(Sema &S, QualType T, SourceLocation Loc, SourceRange ArgRange, UnaryExprOrTypeTrait TraitKind) { // Reject sizeof(interface) and sizeof(interface) if the // runtime doesn't allow it. if (!S.LangOpts.ObjCRuntime.allowsSizeofAlignof() && T->isObjCObjectType()) { S.Diag(Loc, diag::err_sizeof_nonfragile_interface) << T << (TraitKind == UETT_SizeOf) << ArgRange; return true; } return false; } /// Check whether E is a pointer from a decayed array type (the decayed /// pointer type is equal to T) and emit a warning if it is. static void warnOnSizeofOnArrayDecay(Sema &S, SourceLocation Loc, QualType T, Expr *E) { // Don't warn if the operation changed the type. if (T != E->getType()) return; // Now look for array decays. ImplicitCastExpr *ICE = dyn_cast(E); if (!ICE || ICE->getCastKind() != CK_ArrayToPointerDecay) return; S.Diag(Loc, diag::warn_sizeof_array_decay) << ICE->getSourceRange() << ICE->getType() << ICE->getSubExpr()->getType(); } /// Check the constraints on expression operands to unary type expression /// and type traits. /// /// Completes any types necessary and validates the constraints on the operand /// expression. The logic mostly mirrors the type-based overload, but may modify /// the expression as it completes the type for that expression through template /// instantiation, etc. bool Sema::CheckUnaryExprOrTypeTraitOperand(Expr *E, UnaryExprOrTypeTrait ExprKind) { QualType ExprTy = E->getType(); assert(!ExprTy->isReferenceType()); bool IsUnevaluatedOperand = (ExprKind == UETT_SizeOf || ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf || ExprKind == UETT_VecStep); if (IsUnevaluatedOperand) { ExprResult Result = CheckUnevaluatedOperand(E); if (Result.isInvalid()) return true; E = Result.get(); } // The operand for sizeof and alignof is in an unevaluated expression context, // so side effects could result in unintended consequences. // Exclude instantiation-dependent expressions, because 'sizeof' is sometimes // used to build SFINAE gadgets. // FIXME: Should we consider instantiation-dependent operands to 'alignof'? if (IsUnevaluatedOperand && !inTemplateInstantiation() && !E->isInstantiationDependent() && E->HasSideEffects(Context, false)) Diag(E->getExprLoc(), diag::warn_side_effects_unevaluated_context); if (ExprKind == UETT_VecStep) return CheckVecStepTraitOperandType(*this, ExprTy, E->getExprLoc(), E->getSourceRange()); // Explicitly list some types as extensions. if (!CheckExtensionTraitOperandType(*this, ExprTy, E->getExprLoc(), E->getSourceRange(), ExprKind)) return false; // 'alignof' applied to an expression only requires the base element type of // the expression to be complete. 'sizeof' requires the expression's type to // be complete (and will attempt to complete it if it's an array of unknown // bound). if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { if (RequireCompleteSizedType( E->getExprLoc(), Context.getBaseElementType(E->getType()), diag::err_sizeof_alignof_incomplete_or_sizeless_type, getTraitSpelling(ExprKind), E->getSourceRange())) return true; } else { if (RequireCompleteSizedExprType( E, diag::err_sizeof_alignof_incomplete_or_sizeless_type, getTraitSpelling(ExprKind), E->getSourceRange())) return true; } // Completing the expression's type may have changed it. ExprTy = E->getType(); assert(!ExprTy->isReferenceType()); if (ExprTy->isFunctionType()) { Diag(E->getExprLoc(), diag::err_sizeof_alignof_function_type) << getTraitSpelling(ExprKind) << E->getSourceRange(); return true; } if (CheckObjCTraitOperandConstraints(*this, ExprTy, E->getExprLoc(), E->getSourceRange(), ExprKind)) return true; if (ExprKind == UETT_SizeOf) { if (DeclRefExpr *DeclRef = dyn_cast(E->IgnoreParens())) { if (ParmVarDecl *PVD = dyn_cast(DeclRef->getFoundDecl())) { QualType OType = PVD->getOriginalType(); QualType Type = PVD->getType(); if (Type->isPointerType() && OType->isArrayType()) { Diag(E->getExprLoc(), diag::warn_sizeof_array_param) << Type << OType; Diag(PVD->getLocation(), diag::note_declared_at); } } } // Warn on "sizeof(array op x)" and "sizeof(x op array)", where the array // decays into a pointer and returns an unintended result. This is most // likely a typo for "sizeof(array) op x". if (BinaryOperator *BO = dyn_cast(E->IgnoreParens())) { warnOnSizeofOnArrayDecay(*this, BO->getOperatorLoc(), BO->getType(), BO->getLHS()); warnOnSizeofOnArrayDecay(*this, BO->getOperatorLoc(), BO->getType(), BO->getRHS()); } } return false; } /// Check the constraints on operands to unary expression and type /// traits. /// /// This will complete any types necessary, and validate the various constraints /// on those operands. /// /// The UsualUnaryConversions() function is *not* called by this routine. /// C99 6.3.2.1p[2-4] all state: /// Except when it is the operand of the sizeof operator ... /// /// C++ [expr.sizeof]p4 /// The lvalue-to-rvalue, array-to-pointer, and function-to-pointer /// standard conversions are not applied to the operand of sizeof. /// /// This policy is followed for all of the unary trait expressions. bool Sema::CheckUnaryExprOrTypeTraitOperand(QualType ExprType, SourceLocation OpLoc, SourceRange ExprRange, UnaryExprOrTypeTrait ExprKind) { if (ExprType->isDependentType()) return false; // C++ [expr.sizeof]p2: // When applied to a reference or a reference type, the result // is the size of the referenced type. // C++11 [expr.alignof]p3: // When alignof is applied to a reference type, the result // shall be the alignment of the referenced type. if (const ReferenceType *Ref = ExprType->getAs()) ExprType = Ref->getPointeeType(); // C11 6.5.3.4/3, C++11 [expr.alignof]p3: // When alignof or _Alignof is applied to an array type, the result // is the alignment of the element type. if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf || ExprKind == UETT_OpenMPRequiredSimdAlign) ExprType = Context.getBaseElementType(ExprType); if (ExprKind == UETT_VecStep) return CheckVecStepTraitOperandType(*this, ExprType, OpLoc, ExprRange); // Explicitly list some types as extensions. if (!CheckExtensionTraitOperandType(*this, ExprType, OpLoc, ExprRange, ExprKind)) return false; if (RequireCompleteSizedType( OpLoc, ExprType, diag::err_sizeof_alignof_incomplete_or_sizeless_type, getTraitSpelling(ExprKind), ExprRange)) return true; if (ExprType->isFunctionType()) { Diag(OpLoc, diag::err_sizeof_alignof_function_type) << getTraitSpelling(ExprKind) << ExprRange; return true; } if (CheckObjCTraitOperandConstraints(*this, ExprType, OpLoc, ExprRange, ExprKind)) return true; return false; } static bool CheckAlignOfExpr(Sema &S, Expr *E, UnaryExprOrTypeTrait ExprKind) { // Cannot know anything else if the expression is dependent. if (E->isTypeDependent()) return false; if (E->getObjectKind() == OK_BitField) { S.Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) << 1 << E->getSourceRange(); return true; } ValueDecl *D = nullptr; Expr *Inner = E->IgnoreParens(); if (DeclRefExpr *DRE = dyn_cast(Inner)) { D = DRE->getDecl(); } else if (MemberExpr *ME = dyn_cast(Inner)) { D = ME->getMemberDecl(); } // If it's a field, require the containing struct to have a // complete definition so that we can compute the layout. // // This can happen in C++11 onwards, either by naming the member // in a way that is not transformed into a member access expression // (in an unevaluated operand, for instance), or by naming the member // in a trailing-return-type. // // For the record, since __alignof__ on expressions is a GCC // extension, GCC seems to permit this but always gives the // nonsensical answer 0. // // We don't really need the layout here --- we could instead just // directly check for all the appropriate alignment-lowing // attributes --- but that would require duplicating a lot of // logic that just isn't worth duplicating for such a marginal // use-case. if (FieldDecl *FD = dyn_cast_or_null(D)) { // Fast path this check, since we at least know the record has a // definition if we can find a member of it. if (!FD->getParent()->isCompleteDefinition()) { S.Diag(E->getExprLoc(), diag::err_alignof_member_of_incomplete_type) << E->getSourceRange(); return true; } // Otherwise, if it's a field, and the field doesn't have // reference type, then it must have a complete type (or be a // flexible array member, which we explicitly want to // white-list anyway), which makes the following checks trivial. if (!FD->getType()->isReferenceType()) return false; } return S.CheckUnaryExprOrTypeTraitOperand(E, ExprKind); } bool Sema::CheckVecStepExpr(Expr *E) { E = E->IgnoreParens(); // Cannot know anything else if the expression is dependent. if (E->isTypeDependent()) return false; return CheckUnaryExprOrTypeTraitOperand(E, UETT_VecStep); } static void captureVariablyModifiedType(ASTContext &Context, QualType T, CapturingScopeInfo *CSI) { assert(T->isVariablyModifiedType()); assert(CSI != nullptr); // We're going to walk down into the type and look for VLA expressions. do { const Type *Ty = T.getTypePtr(); switch (Ty->getTypeClass()) { #define TYPE(Class, Base) #define ABSTRACT_TYPE(Class, Base) #define NON_CANONICAL_TYPE(Class, Base) #define DEPENDENT_TYPE(Class, Base) case Type::Class: #define NON_CANONICAL_UNLESS_DEPENDENT_TYPE(Class, Base) #include "clang/AST/TypeNodes.inc" T = QualType(); break; // These types are never variably-modified. case Type::Builtin: case Type::Complex: case Type::Vector: case Type::ExtVector: case Type::ConstantMatrix: case Type::Record: case Type::Enum: case Type::Elaborated: case Type::TemplateSpecialization: case Type::ObjCObject: case Type::ObjCInterface: case Type::ObjCObjectPointer: case Type::ObjCTypeParam: case Type::Pipe: case Type::ExtInt: llvm_unreachable("type class is never variably-modified!"); case Type::Adjusted: T = cast(Ty)->getOriginalType(); break; case Type::Decayed: T = cast(Ty)->getPointeeType(); break; case Type::Pointer: T = cast(Ty)->getPointeeType(); break; case Type::BlockPointer: T = cast(Ty)->getPointeeType(); break; case Type::LValueReference: case Type::RValueReference: T = cast(Ty)->getPointeeType(); break; case Type::MemberPointer: T = cast(Ty)->getPointeeType(); break; case Type::ConstantArray: case Type::IncompleteArray: // Losing element qualification here is fine. T = cast(Ty)->getElementType(); break; case Type::VariableArray: { // Losing element qualification here is fine. const VariableArrayType *VAT = cast(Ty); // Unknown size indication requires no size computation. // Otherwise, evaluate and record it. auto Size = VAT->getSizeExpr(); if (Size && !CSI->isVLATypeCaptured(VAT) && (isa(CSI) || isa(CSI))) CSI->addVLATypeCapture(Size->getExprLoc(), VAT, Context.getSizeType()); T = VAT->getElementType(); break; } case Type::FunctionProto: case Type::FunctionNoProto: T = cast(Ty)->getReturnType(); break; case Type::Paren: case Type::TypeOf: case Type::UnaryTransform: case Type::Attributed: case Type::SubstTemplateTypeParm: case Type::MacroQualified: // Keep walking after single level desugaring. T = T.getSingleStepDesugaredType(Context); break; case Type::Typedef: T = cast(Ty)->desugar(); break; case Type::Decltype: T = cast(Ty)->desugar(); break; case Type::Auto: case Type::DeducedTemplateSpecialization: T = cast(Ty)->getDeducedType(); break; case Type::TypeOfExpr: T = cast(Ty)->getUnderlyingExpr()->getType(); break; case Type::Atomic: T = cast(Ty)->getValueType(); break; } } while (!T.isNull() && T->isVariablyModifiedType()); } /// Build a sizeof or alignof expression given a type operand. ExprResult Sema::CreateUnaryExprOrTypeTraitExpr(TypeSourceInfo *TInfo, SourceLocation OpLoc, UnaryExprOrTypeTrait ExprKind, SourceRange R) { if (!TInfo) return ExprError(); QualType T = TInfo->getType(); if (!T->isDependentType() && CheckUnaryExprOrTypeTraitOperand(T, OpLoc, R, ExprKind)) return ExprError(); if (T->isVariablyModifiedType() && FunctionScopes.size() > 1) { if (auto *TT = T->getAs()) { for (auto I = FunctionScopes.rbegin(), E = std::prev(FunctionScopes.rend()); I != E; ++I) { auto *CSI = dyn_cast(*I); if (CSI == nullptr) break; DeclContext *DC = nullptr; if (auto *LSI = dyn_cast(CSI)) DC = LSI->CallOperator; else if (auto *CRSI = dyn_cast(CSI)) DC = CRSI->TheCapturedDecl; else if (auto *BSI = dyn_cast(CSI)) DC = BSI->TheDecl; if (DC) { if (DC->containsDecl(TT->getDecl())) break; captureVariablyModifiedType(Context, T, CSI); } } } } // C99 6.5.3.4p4: the type (an unsigned integer type) is size_t. return new (Context) UnaryExprOrTypeTraitExpr( ExprKind, TInfo, Context.getSizeType(), OpLoc, R.getEnd()); } /// Build a sizeof or alignof expression given an expression /// operand. ExprResult Sema::CreateUnaryExprOrTypeTraitExpr(Expr *E, SourceLocation OpLoc, UnaryExprOrTypeTrait ExprKind) { ExprResult PE = CheckPlaceholderExpr(E); if (PE.isInvalid()) return ExprError(); E = PE.get(); // Verify that the operand is valid. bool isInvalid = false; if (E->isTypeDependent()) { // Delay type-checking for type-dependent expressions. } else if (ExprKind == UETT_AlignOf || ExprKind == UETT_PreferredAlignOf) { isInvalid = CheckAlignOfExpr(*this, E, ExprKind); } else if (ExprKind == UETT_VecStep) { isInvalid = CheckVecStepExpr(E); } else if (ExprKind == UETT_OpenMPRequiredSimdAlign) { Diag(E->getExprLoc(), diag::err_openmp_default_simd_align_expr); isInvalid = true; } else if (E->refersToBitField()) { // C99 6.5.3.4p1. Diag(E->getExprLoc(), diag::err_sizeof_alignof_typeof_bitfield) << 0; isInvalid = true; } else { isInvalid = CheckUnaryExprOrTypeTraitOperand(E, UETT_SizeOf); } if (isInvalid) return ExprError(); if (ExprKind == UETT_SizeOf && E->getType()->isVariableArrayType()) { PE = TransformToPotentiallyEvaluated(E); if (PE.isInvalid()) return ExprError(); E = PE.get(); } // C99 6.5.3.4p4: the type (an unsigned integer type) is size_t. return new (Context) UnaryExprOrTypeTraitExpr( ExprKind, E, Context.getSizeType(), OpLoc, E->getSourceRange().getEnd()); } /// ActOnUnaryExprOrTypeTraitExpr - Handle @c sizeof(type) and @c sizeof @c /// expr and the same for @c alignof and @c __alignof /// Note that the ArgRange is invalid if isType is false. ExprResult Sema::ActOnUnaryExprOrTypeTraitExpr(SourceLocation OpLoc, UnaryExprOrTypeTrait ExprKind, bool IsType, void *TyOrEx, SourceRange ArgRange) { // If error parsing type, ignore. if (!TyOrEx) return ExprError(); if (IsType) { TypeSourceInfo *TInfo; (void) GetTypeFromParser(ParsedType::getFromOpaquePtr(TyOrEx), &TInfo); return CreateUnaryExprOrTypeTraitExpr(TInfo, OpLoc, ExprKind, ArgRange); } Expr *ArgEx = (Expr *)TyOrEx; ExprResult Result = CreateUnaryExprOrTypeTraitExpr(ArgEx, OpLoc, ExprKind); return Result; } static QualType CheckRealImagOperand(Sema &S, ExprResult &V, SourceLocation Loc, bool IsReal) { if (V.get()->isTypeDependent()) return S.Context.DependentTy; // _Real and _Imag are only l-values for normal l-values. if (V.get()->getObjectKind() != OK_Ordinary) { V = S.DefaultLvalueConversion(V.get()); if (V.isInvalid()) return QualType(); } // These operators return the element type of a complex type. if (const ComplexType *CT = V.get()->getType()->getAs()) return CT->getElementType(); // Otherwise they pass through real integer and floating point types here. if (V.get()->getType()->isArithmeticType()) return V.get()->getType(); // Test for placeholders. ExprResult PR = S.CheckPlaceholderExpr(V.get()); if (PR.isInvalid()) return QualType(); if (PR.get() != V.get()) { V = PR; return CheckRealImagOperand(S, V, Loc, IsReal); } // Reject anything else. S.Diag(Loc, diag::err_realimag_invalid_type) << V.get()->getType() << (IsReal ? "__real" : "__imag"); return QualType(); } ExprResult Sema::ActOnPostfixUnaryOp(Scope *S, SourceLocation OpLoc, tok::TokenKind Kind, Expr *Input) { UnaryOperatorKind Opc; switch (Kind) { default: llvm_unreachable("Unknown unary op!"); case tok::plusplus: Opc = UO_PostInc; break; case tok::minusminus: Opc = UO_PostDec; break; } // Since this might is a postfix expression, get rid of ParenListExprs. ExprResult Result = MaybeConvertParenListExprToParenExpr(S, Input); if (Result.isInvalid()) return ExprError(); Input = Result.get(); return BuildUnaryOp(S, OpLoc, Opc, Input); } /// Diagnose if arithmetic on the given ObjC pointer is illegal. /// /// \return true on error static bool checkArithmeticOnObjCPointer(Sema &S, SourceLocation opLoc, Expr *op) { assert(op->getType()->isObjCObjectPointerType()); if (S.LangOpts.ObjCRuntime.allowsPointerArithmetic() && !S.LangOpts.ObjCSubscriptingLegacyRuntime) return false; S.Diag(opLoc, diag::err_arithmetic_nonfragile_interface) << op->getType()->castAs()->getPointeeType() << op->getSourceRange(); return true; } static bool isMSPropertySubscriptExpr(Sema &S, Expr *Base) { auto *BaseNoParens = Base->IgnoreParens(); if (auto *MSProp = dyn_cast(BaseNoParens)) return MSProp->getPropertyDecl()->getType()->isArrayType(); return isa(BaseNoParens); } ExprResult Sema::ActOnArraySubscriptExpr(Scope *S, Expr *base, SourceLocation lbLoc, Expr *idx, SourceLocation rbLoc) { if (base && !base->getType().isNull() && base->getType()->isSpecificPlaceholderType(BuiltinType::OMPArraySection)) return ActOnOMPArraySectionExpr(base, lbLoc, idx, SourceLocation(), SourceLocation(), /*Length*/ nullptr, /*Stride=*/nullptr, rbLoc); // Since this might be a postfix expression, get rid of ParenListExprs. if (isa(base)) { ExprResult result = MaybeConvertParenListExprToParenExpr(S, base); if (result.isInvalid()) return ExprError(); base = result.get(); } // Check if base and idx form a MatrixSubscriptExpr. // // Helper to check for comma expressions, which are not allowed as indices for // matrix subscript expressions. auto CheckAndReportCommaError = [this, base, rbLoc](Expr *E) { if (isa(E) && cast(E)->isCommaOp()) { Diag(E->getExprLoc(), diag::err_matrix_subscript_comma) << SourceRange(base->getBeginLoc(), rbLoc); return true; } return false; }; // The matrix subscript operator ([][])is considered a single operator. // Separating the index expressions by parenthesis is not allowed. if (base->getType()->isSpecificPlaceholderType( BuiltinType::IncompleteMatrixIdx) && !isa(base)) { Diag(base->getExprLoc(), diag::err_matrix_separate_incomplete_index) << SourceRange(base->getBeginLoc(), rbLoc); return ExprError(); } // If the base is a MatrixSubscriptExpr, try to create a new // MatrixSubscriptExpr. auto *matSubscriptE = dyn_cast(base); if (matSubscriptE) { if (CheckAndReportCommaError(idx)) return ExprError(); assert(matSubscriptE->isIncomplete() && "base has to be an incomplete matrix subscript"); return CreateBuiltinMatrixSubscriptExpr( matSubscriptE->getBase(), matSubscriptE->getRowIdx(), idx, rbLoc); } // Handle any non-overload placeholder types in the base and index // expressions. We can't handle overloads here because the other // operand might be an overloadable type, in which case the overload // resolution for the operator overload should get the first crack // at the overload. bool IsMSPropertySubscript = false; if (base->getType()->isNonOverloadPlaceholderType()) { IsMSPropertySubscript = isMSPropertySubscriptExpr(*this, base); if (!IsMSPropertySubscript) { ExprResult result = CheckPlaceholderExpr(base); if (result.isInvalid()) return ExprError(); base = result.get(); } } // If the base is a matrix type, try to create a new MatrixSubscriptExpr. if (base->getType()->isMatrixType()) { if (CheckAndReportCommaError(idx)) return ExprError(); return CreateBuiltinMatrixSubscriptExpr(base, idx, nullptr, rbLoc); } // A comma-expression as the index is deprecated in C++2a onwards. if (getLangOpts().CPlusPlus20 && ((isa(idx) && cast(idx)->isCommaOp()) || (isa(idx) && cast(idx)->getOperator() == OO_Comma))) { Diag(idx->getExprLoc(), diag::warn_deprecated_comma_subscript) << SourceRange(base->getBeginLoc(), rbLoc); } if (idx->getType()->isNonOverloadPlaceholderType()) { ExprResult result = CheckPlaceholderExpr(idx); if (result.isInvalid()) return ExprError(); idx = result.get(); } // Build an unanalyzed expression if either operand is type-dependent. if (getLangOpts().CPlusPlus && (base->isTypeDependent() || idx->isTypeDependent())) { return new (Context) ArraySubscriptExpr(base, idx, Context.DependentTy, VK_LValue, OK_Ordinary, rbLoc); } // MSDN, property (C++) // https://msdn.microsoft.com/en-us/library/yhfk0thd(v=vs.120).aspx // This attribute can also be used in the declaration of an empty array in a // class or structure definition. For example: // __declspec(property(get=GetX, put=PutX)) int x[]; // The above statement indicates that x[] can be used with one or more array // indices. In this case, i=p->x[a][b] will be turned into i=p->GetX(a, b), // and p->x[a][b] = i will be turned into p->PutX(a, b, i); if (IsMSPropertySubscript) { // Build MS property subscript expression if base is MS property reference // or MS property subscript. return new (Context) MSPropertySubscriptExpr( base, idx, Context.PseudoObjectTy, VK_LValue, OK_Ordinary, rbLoc); } // Use C++ overloaded-operator rules if either operand has record // type. The spec says to do this if either type is *overloadable*, // but enum types can't declare subscript operators or conversion // operators, so there's nothing interesting for overload resolution // to do if there aren't any record types involved. // // ObjC pointers have their own subscripting logic that is not tied // to overload resolution and so should not take this path. if (getLangOpts().CPlusPlus && (base->getType()->isRecordType() || (!base->getType()->isObjCObjectPointerType() && idx->getType()->isRecordType()))) { return CreateOverloadedArraySubscriptExpr(lbLoc, rbLoc, base, idx); } ExprResult Res = CreateBuiltinArraySubscriptExpr(base, lbLoc, idx, rbLoc); if (!Res.isInvalid() && isa(Res.get())) CheckSubscriptAccessOfNoDeref(cast(Res.get())); return Res; } ExprResult Sema::tryConvertExprToType(Expr *E, QualType Ty) { InitializedEntity Entity = InitializedEntity::InitializeTemporary(Ty); InitializationKind Kind = InitializationKind::CreateCopy(E->getBeginLoc(), SourceLocation()); InitializationSequence InitSeq(*this, Entity, Kind, E); return InitSeq.Perform(*this, Entity, Kind, E); } ExprResult Sema::CreateBuiltinMatrixSubscriptExpr(Expr *Base, Expr *RowIdx, Expr *ColumnIdx, SourceLocation RBLoc) { ExprResult BaseR = CheckPlaceholderExpr(Base); if (BaseR.isInvalid()) return BaseR; Base = BaseR.get(); ExprResult RowR = CheckPlaceholderExpr(RowIdx); if (RowR.isInvalid()) return RowR; RowIdx = RowR.get(); if (!ColumnIdx) return new (Context) MatrixSubscriptExpr( Base, RowIdx, ColumnIdx, Context.IncompleteMatrixIdxTy, RBLoc); // Build an unanalyzed expression if any of the operands is type-dependent. if (Base->isTypeDependent() || RowIdx->isTypeDependent() || ColumnIdx->isTypeDependent()) return new (Context) MatrixSubscriptExpr(Base, RowIdx, ColumnIdx, Context.DependentTy, RBLoc); ExprResult ColumnR = CheckPlaceholderExpr(ColumnIdx); if (ColumnR.isInvalid()) return ColumnR; ColumnIdx = ColumnR.get(); // Check that IndexExpr is an integer expression. If it is a constant // expression, check that it is less than Dim (= the number of elements in the // corresponding dimension). auto IsIndexValid = [&](Expr *IndexExpr, unsigned Dim, bool IsColumnIdx) -> Expr * { if (!IndexExpr->getType()->isIntegerType() && !IndexExpr->isTypeDependent()) { Diag(IndexExpr->getBeginLoc(), diag::err_matrix_index_not_integer) << IsColumnIdx; return nullptr; } if (Optional Idx = IndexExpr->getIntegerConstantExpr(Context)) { if ((*Idx < 0 || *Idx >= Dim)) { Diag(IndexExpr->getBeginLoc(), diag::err_matrix_index_outside_range) << IsColumnIdx << Dim; return nullptr; } } ExprResult ConvExpr = tryConvertExprToType(IndexExpr, Context.getSizeType()); assert(!ConvExpr.isInvalid() && "should be able to convert any integer type to size type"); return ConvExpr.get(); }; auto *MTy = Base->getType()->getAs(); RowIdx = IsIndexValid(RowIdx, MTy->getNumRows(), false); ColumnIdx = IsIndexValid(ColumnIdx, MTy->getNumColumns(), true); if (!RowIdx || !ColumnIdx) return ExprError(); return new (Context) MatrixSubscriptExpr(Base, RowIdx, ColumnIdx, MTy->getElementType(), RBLoc); } void Sema::CheckAddressOfNoDeref(const Expr *E) { ExpressionEvaluationContextRecord &LastRecord = ExprEvalContexts.back(); const Expr *StrippedExpr = E->IgnoreParenImpCasts(); // For expressions like `&(*s).b`, the base is recorded and what should be // checked. const MemberExpr *Member = nullptr; while ((Member = dyn_cast(StrippedExpr)) && !Member->isArrow()) StrippedExpr = Member->getBase()->IgnoreParenImpCasts(); LastRecord.PossibleDerefs.erase(StrippedExpr); } void Sema::CheckSubscriptAccessOfNoDeref(const ArraySubscriptExpr *E) { if (isUnevaluatedContext()) return; QualType ResultTy = E->getType(); ExpressionEvaluationContextRecord &LastRecord = ExprEvalContexts.back(); // Bail if the element is an array since it is not memory access. if (isa(ResultTy)) return; if (ResultTy->hasAttr(attr::NoDeref)) { LastRecord.PossibleDerefs.insert(E); return; } // Check if the base type is a pointer to a member access of a struct // marked with noderef. const Expr *Base = E->getBase(); QualType BaseTy = Base->getType(); if (!(isa(BaseTy) || isa(BaseTy))) // Not a pointer access return; const MemberExpr *Member = nullptr; while ((Member = dyn_cast(Base->IgnoreParenCasts())) && Member->isArrow()) Base = Member->getBase(); if (const auto *Ptr = dyn_cast(Base->getType())) { if (Ptr->getPointeeType()->hasAttr(attr::NoDeref)) LastRecord.PossibleDerefs.insert(E); } } ExprResult Sema::ActOnOMPArraySectionExpr(Expr *Base, SourceLocation LBLoc, Expr *LowerBound, SourceLocation ColonLocFirst, SourceLocation ColonLocSecond, Expr *Length, Expr *Stride, SourceLocation RBLoc) { if (Base->getType()->isPlaceholderType() && !Base->getType()->isSpecificPlaceholderType( BuiltinType::OMPArraySection)) { ExprResult Result = CheckPlaceholderExpr(Base); if (Result.isInvalid()) return ExprError(); Base = Result.get(); } if (LowerBound && LowerBound->getType()->isNonOverloadPlaceholderType()) { ExprResult Result = CheckPlaceholderExpr(LowerBound); if (Result.isInvalid()) return ExprError(); Result = DefaultLvalueConversion(Result.get()); if (Result.isInvalid()) return ExprError(); LowerBound = Result.get(); } if (Length && Length->getType()->isNonOverloadPlaceholderType()) { ExprResult Result = CheckPlaceholderExpr(Length); if (Result.isInvalid()) return ExprError(); Result = DefaultLvalueConversion(Result.get()); if (Result.isInvalid()) return ExprError(); Length = Result.get(); } if (Stride && Stride->getType()->isNonOverloadPlaceholderType()) { ExprResult Result = CheckPlaceholderExpr(Stride); if (Result.isInvalid()) return ExprError(); Result = DefaultLvalueConversion(Result.get()); if (Result.isInvalid()) return ExprError(); Stride = Result.get(); } // Build an unanalyzed expression if either operand is type-dependent. if (Base->isTypeDependent() || (LowerBound && (LowerBound->isTypeDependent() || LowerBound->isValueDependent())) || (Length && (Length->isTypeDependent() || Length->isValueDependent())) || (Stride && (Stride->isTypeDependent() || Stride->isValueDependent()))) { return new (Context) OMPArraySectionExpr( Base, LowerBound, Length, Stride, Context.DependentTy, VK_LValue, OK_Ordinary, ColonLocFirst, ColonLocSecond, RBLoc); } // Perform default conversions. QualType OriginalTy = OMPArraySectionExpr::getBaseOriginalType(Base); QualType ResultTy; if (OriginalTy->isAnyPointerType()) { ResultTy = OriginalTy->getPointeeType(); } else if (OriginalTy->isArrayType()) { ResultTy = OriginalTy->getAsArrayTypeUnsafe()->getElementType(); } else { return ExprError( Diag(Base->getExprLoc(), diag::err_omp_typecheck_section_value) << Base->getSourceRange()); } // C99 6.5.2.1p1 if (LowerBound) { auto Res = PerformOpenMPImplicitIntegerConversion(LowerBound->getExprLoc(), LowerBound); if (Res.isInvalid()) return ExprError(Diag(LowerBound->getExprLoc(), diag::err_omp_typecheck_section_not_integer) << 0 << LowerBound->getSourceRange()); LowerBound = Res.get(); if (LowerBound->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || LowerBound->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) Diag(LowerBound->getExprLoc(), diag::warn_omp_section_is_char) << 0 << LowerBound->getSourceRange(); } if (Length) { auto Res = PerformOpenMPImplicitIntegerConversion(Length->getExprLoc(), Length); if (Res.isInvalid()) return ExprError(Diag(Length->getExprLoc(), diag::err_omp_typecheck_section_not_integer) << 1 << Length->getSourceRange()); Length = Res.get(); if (Length->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || Length->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) Diag(Length->getExprLoc(), diag::warn_omp_section_is_char) << 1 << Length->getSourceRange(); } if (Stride) { ExprResult Res = PerformOpenMPImplicitIntegerConversion(Stride->getExprLoc(), Stride); if (Res.isInvalid()) return ExprError(Diag(Stride->getExprLoc(), diag::err_omp_typecheck_section_not_integer) << 1 << Stride->getSourceRange()); Stride = Res.get(); if (Stride->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || Stride->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) Diag(Stride->getExprLoc(), diag::warn_omp_section_is_char) << 1 << Stride->getSourceRange(); } // C99 6.5.2.1p1: "shall have type "pointer to *object* type". Similarly, // C++ [expr.sub]p1: The type "T" shall be a completely-defined object // type. Note that functions are not objects, and that (in C99 parlance) // incomplete types are not object types. if (ResultTy->isFunctionType()) { Diag(Base->getExprLoc(), diag::err_omp_section_function_type) << ResultTy << Base->getSourceRange(); return ExprError(); } if (RequireCompleteType(Base->getExprLoc(), ResultTy, diag::err_omp_section_incomplete_type, Base)) return ExprError(); if (LowerBound && !OriginalTy->isAnyPointerType()) { Expr::EvalResult Result; if (LowerBound->EvaluateAsInt(Result, Context)) { // OpenMP 5.0, [2.1.5 Array Sections] // The array section must be a subset of the original array. llvm::APSInt LowerBoundValue = Result.Val.getInt(); if (LowerBoundValue.isNegative()) { Diag(LowerBound->getExprLoc(), diag::err_omp_section_not_subset_of_array) << LowerBound->getSourceRange(); return ExprError(); } } } if (Length) { Expr::EvalResult Result; if (Length->EvaluateAsInt(Result, Context)) { // OpenMP 5.0, [2.1.5 Array Sections] // The length must evaluate to non-negative integers. llvm::APSInt LengthValue = Result.Val.getInt(); if (LengthValue.isNegative()) { Diag(Length->getExprLoc(), diag::err_omp_section_length_negative) << LengthValue.toString(/*Radix=*/10, /*Signed=*/true) << Length->getSourceRange(); return ExprError(); } } } else if (ColonLocFirst.isValid() && (OriginalTy.isNull() || (!OriginalTy->isConstantArrayType() && !OriginalTy->isVariableArrayType()))) { // OpenMP 5.0, [2.1.5 Array Sections] // When the size of the array dimension is not known, the length must be // specified explicitly. Diag(ColonLocFirst, diag::err_omp_section_length_undefined) << (!OriginalTy.isNull() && OriginalTy->isArrayType()); return ExprError(); } if (Stride) { Expr::EvalResult Result; if (Stride->EvaluateAsInt(Result, Context)) { // OpenMP 5.0, [2.1.5 Array Sections] // The stride must evaluate to a positive integer. llvm::APSInt StrideValue = Result.Val.getInt(); if (!StrideValue.isStrictlyPositive()) { Diag(Stride->getExprLoc(), diag::err_omp_section_stride_non_positive) << StrideValue.toString(/*Radix=*/10, /*Signed=*/true) << Stride->getSourceRange(); return ExprError(); } } } if (!Base->getType()->isSpecificPlaceholderType( BuiltinType::OMPArraySection)) { ExprResult Result = DefaultFunctionArrayLvalueConversion(Base); if (Result.isInvalid()) return ExprError(); Base = Result.get(); } return new (Context) OMPArraySectionExpr( Base, LowerBound, Length, Stride, Context.OMPArraySectionTy, VK_LValue, OK_Ordinary, ColonLocFirst, ColonLocSecond, RBLoc); } ExprResult Sema::ActOnOMPArrayShapingExpr(Expr *Base, SourceLocation LParenLoc, SourceLocation RParenLoc, ArrayRef Dims, ArrayRef Brackets) { if (Base->getType()->isPlaceholderType()) { ExprResult Result = CheckPlaceholderExpr(Base); if (Result.isInvalid()) return ExprError(); Result = DefaultLvalueConversion(Result.get()); if (Result.isInvalid()) return ExprError(); Base = Result.get(); } QualType BaseTy = Base->getType(); // Delay analysis of the types/expressions if instantiation/specialization is // required. if (!BaseTy->isPointerType() && Base->isTypeDependent()) return OMPArrayShapingExpr::Create(Context, Context.DependentTy, Base, LParenLoc, RParenLoc, Dims, Brackets); if (!BaseTy->isPointerType() || (!Base->isTypeDependent() && BaseTy->getPointeeType()->isIncompleteType())) return ExprError(Diag(Base->getExprLoc(), diag::err_omp_non_pointer_type_array_shaping_base) << Base->getSourceRange()); SmallVector NewDims; bool ErrorFound = false; for (Expr *Dim : Dims) { if (Dim->getType()->isPlaceholderType()) { ExprResult Result = CheckPlaceholderExpr(Dim); if (Result.isInvalid()) { ErrorFound = true; continue; } Result = DefaultLvalueConversion(Result.get()); if (Result.isInvalid()) { ErrorFound = true; continue; } Dim = Result.get(); } if (!Dim->isTypeDependent()) { ExprResult Result = PerformOpenMPImplicitIntegerConversion(Dim->getExprLoc(), Dim); if (Result.isInvalid()) { ErrorFound = true; Diag(Dim->getExprLoc(), diag::err_omp_typecheck_shaping_not_integer) << Dim->getSourceRange(); continue; } Dim = Result.get(); Expr::EvalResult EvResult; if (!Dim->isValueDependent() && Dim->EvaluateAsInt(EvResult, Context)) { // OpenMP 5.0, [2.1.4 Array Shaping] // Each si is an integral type expression that must evaluate to a // positive integer. llvm::APSInt Value = EvResult.Val.getInt(); if (!Value.isStrictlyPositive()) { Diag(Dim->getExprLoc(), diag::err_omp_shaping_dimension_not_positive) << Value.toString(/*Radix=*/10, /*Signed=*/true) << Dim->getSourceRange(); ErrorFound = true; continue; } } } NewDims.push_back(Dim); } if (ErrorFound) return ExprError(); return OMPArrayShapingExpr::Create(Context, Context.OMPArrayShapingTy, Base, LParenLoc, RParenLoc, NewDims, Brackets); } ExprResult Sema::ActOnOMPIteratorExpr(Scope *S, SourceLocation IteratorKwLoc, SourceLocation LLoc, SourceLocation RLoc, ArrayRef Data) { SmallVector ID; bool IsCorrect = true; for (const OMPIteratorData &D : Data) { TypeSourceInfo *TInfo = nullptr; SourceLocation StartLoc; QualType DeclTy; if (!D.Type.getAsOpaquePtr()) { // OpenMP 5.0, 2.1.6 Iterators // In an iterator-specifier, if the iterator-type is not specified then // the type of that iterator is of int type. DeclTy = Context.IntTy; StartLoc = D.DeclIdentLoc; } else { DeclTy = GetTypeFromParser(D.Type, &TInfo); StartLoc = TInfo->getTypeLoc().getBeginLoc(); } bool IsDeclTyDependent = DeclTy->isDependentType() || DeclTy->containsUnexpandedParameterPack() || DeclTy->isInstantiationDependentType(); if (!IsDeclTyDependent) { if (!DeclTy->isIntegralType(Context) && !DeclTy->isAnyPointerType()) { // OpenMP 5.0, 2.1.6 Iterators, Restrictions, C/C++ // The iterator-type must be an integral or pointer type. Diag(StartLoc, diag::err_omp_iterator_not_integral_or_pointer) << DeclTy; IsCorrect = false; continue; } if (DeclTy.isConstant(Context)) { // OpenMP 5.0, 2.1.6 Iterators, Restrictions, C/C++ // The iterator-type must not be const qualified. Diag(StartLoc, diag::err_omp_iterator_not_integral_or_pointer) << DeclTy; IsCorrect = false; continue; } } // Iterator declaration. assert(D.DeclIdent && "Identifier expected."); // Always try to create iterator declarator to avoid extra error messages // about unknown declarations use. auto *VD = VarDecl::Create(Context, CurContext, StartLoc, D.DeclIdentLoc, D.DeclIdent, DeclTy, TInfo, SC_None); VD->setImplicit(); if (S) { // Check for conflicting previous declaration. DeclarationNameInfo NameInfo(VD->getDeclName(), D.DeclIdentLoc); LookupResult Previous(*this, NameInfo, LookupOrdinaryName, ForVisibleRedeclaration); Previous.suppressDiagnostics(); LookupName(Previous, S); FilterLookupForScope(Previous, CurContext, S, /*ConsiderLinkage=*/false, /*AllowInlineNamespace=*/false); if (!Previous.empty()) { NamedDecl *Old = Previous.getRepresentativeDecl(); Diag(D.DeclIdentLoc, diag::err_redefinition) << VD->getDeclName(); Diag(Old->getLocation(), diag::note_previous_definition); } else { PushOnScopeChains(VD, S); } } else { CurContext->addDecl(VD); } Expr *Begin = D.Range.Begin; if (!IsDeclTyDependent && Begin && !Begin->isTypeDependent()) { ExprResult BeginRes = PerformImplicitConversion(Begin, DeclTy, AA_Converting); Begin = BeginRes.get(); } Expr *End = D.Range.End; if (!IsDeclTyDependent && End && !End->isTypeDependent()) { ExprResult EndRes = PerformImplicitConversion(End, DeclTy, AA_Converting); End = EndRes.get(); } Expr *Step = D.Range.Step; if (!IsDeclTyDependent && Step && !Step->isTypeDependent()) { if (!Step->getType()->isIntegralType(Context)) { Diag(Step->getExprLoc(), diag::err_omp_iterator_step_not_integral) << Step << Step->getSourceRange(); IsCorrect = false; continue; } Optional Result = Step->getIntegerConstantExpr(Context); // OpenMP 5.0, 2.1.6 Iterators, Restrictions // If the step expression of a range-specification equals zero, the // behavior is unspecified. if (Result && Result->isNullValue()) { Diag(Step->getExprLoc(), diag::err_omp_iterator_step_constant_zero) << Step << Step->getSourceRange(); IsCorrect = false; continue; } } if (!Begin || !End || !IsCorrect) { IsCorrect = false; continue; } OMPIteratorExpr::IteratorDefinition &IDElem = ID.emplace_back(); IDElem.IteratorDecl = VD; IDElem.AssignmentLoc = D.AssignLoc; IDElem.Range.Begin = Begin; IDElem.Range.End = End; IDElem.Range.Step = Step; IDElem.ColonLoc = D.ColonLoc; IDElem.SecondColonLoc = D.SecColonLoc; } if (!IsCorrect) { // Invalidate all created iterator declarations if error is found. for (const OMPIteratorExpr::IteratorDefinition &D : ID) { if (Decl *ID = D.IteratorDecl) ID->setInvalidDecl(); } return ExprError(); } SmallVector Helpers; if (!CurContext->isDependentContext()) { // Build number of ityeration for each iteration range. // Ni = ((Stepi > 0) ? ((Endi + Stepi -1 - Begini)/Stepi) : // ((Begini-Stepi-1-Endi) / -Stepi); for (OMPIteratorExpr::IteratorDefinition &D : ID) { // (Endi - Begini) ExprResult Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, D.Range.End, D.Range.Begin); if(!Res.isUsable()) { IsCorrect = false; continue; } ExprResult St, St1; if (D.Range.Step) { St = D.Range.Step; // (Endi - Begini) + Stepi Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, Res.get(), St.get()); if (!Res.isUsable()) { IsCorrect = false; continue; } // (Endi - Begini) + Stepi - 1 Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, Res.get(), ActOnIntegerConstant(D.AssignmentLoc, 1).get()); if (!Res.isUsable()) { IsCorrect = false; continue; } // ((Endi - Begini) + Stepi - 1) / Stepi Res = CreateBuiltinBinOp(D.AssignmentLoc, BO_Div, Res.get(), St.get()); if (!Res.isUsable()) { IsCorrect = false; continue; } St1 = CreateBuiltinUnaryOp(D.AssignmentLoc, UO_Minus, D.Range.Step); // (Begini - Endi) ExprResult Res1 = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, D.Range.Begin, D.Range.End); if (!Res1.isUsable()) { IsCorrect = false; continue; } // (Begini - Endi) - Stepi Res1 = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, Res1.get(), St1.get()); if (!Res1.isUsable()) { IsCorrect = false; continue; } // (Begini - Endi) - Stepi - 1 Res1 = CreateBuiltinBinOp(D.AssignmentLoc, BO_Sub, Res1.get(), ActOnIntegerConstant(D.AssignmentLoc, 1).get()); if (!Res1.isUsable()) { IsCorrect = false; continue; } // ((Begini - Endi) - Stepi - 1) / (-Stepi) Res1 = CreateBuiltinBinOp(D.AssignmentLoc, BO_Div, Res1.get(), St1.get()); if (!Res1.isUsable()) { IsCorrect = false; continue; } // Stepi > 0. ExprResult CmpRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_GT, D.Range.Step, ActOnIntegerConstant(D.AssignmentLoc, 0).get()); if (!CmpRes.isUsable()) { IsCorrect = false; continue; } Res = ActOnConditionalOp(D.AssignmentLoc, D.AssignmentLoc, CmpRes.get(), Res.get(), Res1.get()); if (!Res.isUsable()) { IsCorrect = false; continue; } } Res = ActOnFinishFullExpr(Res.get(), /*DiscardedValue=*/false); if (!Res.isUsable()) { IsCorrect = false; continue; } // Build counter update. // Build counter. auto *CounterVD = VarDecl::Create(Context, CurContext, D.IteratorDecl->getBeginLoc(), D.IteratorDecl->getBeginLoc(), nullptr, Res.get()->getType(), nullptr, SC_None); CounterVD->setImplicit(); ExprResult RefRes = BuildDeclRefExpr(CounterVD, CounterVD->getType(), VK_LValue, D.IteratorDecl->getBeginLoc()); // Build counter update. // I = Begini + counter * Stepi; ExprResult UpdateRes; if (D.Range.Step) { UpdateRes = CreateBuiltinBinOp( D.AssignmentLoc, BO_Mul, DefaultLvalueConversion(RefRes.get()).get(), St.get()); } else { UpdateRes = DefaultLvalueConversion(RefRes.get()); } if (!UpdateRes.isUsable()) { IsCorrect = false; continue; } UpdateRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_Add, D.Range.Begin, UpdateRes.get()); if (!UpdateRes.isUsable()) { IsCorrect = false; continue; } ExprResult VDRes = BuildDeclRefExpr(cast(D.IteratorDecl), cast(D.IteratorDecl)->getType(), VK_LValue, D.IteratorDecl->getBeginLoc()); UpdateRes = CreateBuiltinBinOp(D.AssignmentLoc, BO_Assign, VDRes.get(), UpdateRes.get()); if (!UpdateRes.isUsable()) { IsCorrect = false; continue; } UpdateRes = ActOnFinishFullExpr(UpdateRes.get(), /*DiscardedValue=*/true); if (!UpdateRes.isUsable()) { IsCorrect = false; continue; } ExprResult CounterUpdateRes = CreateBuiltinUnaryOp(D.AssignmentLoc, UO_PreInc, RefRes.get()); if (!CounterUpdateRes.isUsable()) { IsCorrect = false; continue; } CounterUpdateRes = ActOnFinishFullExpr(CounterUpdateRes.get(), /*DiscardedValue=*/true); if (!CounterUpdateRes.isUsable()) { IsCorrect = false; continue; } OMPIteratorHelperData &HD = Helpers.emplace_back(); HD.CounterVD = CounterVD; HD.Upper = Res.get(); HD.Update = UpdateRes.get(); HD.CounterUpdate = CounterUpdateRes.get(); } } else { Helpers.assign(ID.size(), {}); } if (!IsCorrect) { // Invalidate all created iterator declarations if error is found. for (const OMPIteratorExpr::IteratorDefinition &D : ID) { if (Decl *ID = D.IteratorDecl) ID->setInvalidDecl(); } return ExprError(); } return OMPIteratorExpr::Create(Context, Context.OMPIteratorTy, IteratorKwLoc, LLoc, RLoc, ID, Helpers); } ExprResult Sema::CreateBuiltinArraySubscriptExpr(Expr *Base, SourceLocation LLoc, Expr *Idx, SourceLocation RLoc) { Expr *LHSExp = Base; Expr *RHSExp = Idx; ExprValueKind VK = VK_LValue; ExprObjectKind OK = OK_Ordinary; // Per C++ core issue 1213, the result is an xvalue if either operand is // a non-lvalue array, and an lvalue otherwise. if (getLangOpts().CPlusPlus11) { for (auto *Op : {LHSExp, RHSExp}) { Op = Op->IgnoreImplicit(); if (Op->getType()->isArrayType() && !Op->isLValue()) VK = VK_XValue; } } // Perform default conversions. if (!LHSExp->getType()->getAs()) { ExprResult Result = DefaultFunctionArrayLvalueConversion(LHSExp); if (Result.isInvalid()) return ExprError(); LHSExp = Result.get(); } ExprResult Result = DefaultFunctionArrayLvalueConversion(RHSExp); if (Result.isInvalid()) return ExprError(); RHSExp = Result.get(); QualType LHSTy = LHSExp->getType(), RHSTy = RHSExp->getType(); // C99 6.5.2.1p2: the expression e1[e2] is by definition precisely equivalent // to the expression *((e1)+(e2)). This means the array "Base" may actually be // in the subscript position. As a result, we need to derive the array base // and index from the expression types. Expr *BaseExpr, *IndexExpr; QualType ResultType; if (LHSTy->isDependentType() || RHSTy->isDependentType()) { BaseExpr = LHSExp; IndexExpr = RHSExp; ResultType = Context.DependentTy; } else if (const PointerType *PTy = LHSTy->getAs()) { BaseExpr = LHSExp; IndexExpr = RHSExp; ResultType = PTy->getPointeeType(); } else if (const ObjCObjectPointerType *PTy = LHSTy->getAs()) { BaseExpr = LHSExp; IndexExpr = RHSExp; // Use custom logic if this should be the pseudo-object subscript // expression. if (!LangOpts.isSubscriptPointerArithmetic()) return BuildObjCSubscriptExpression(RLoc, BaseExpr, IndexExpr, nullptr, nullptr); ResultType = PTy->getPointeeType(); } else if (const PointerType *PTy = RHSTy->getAs()) { // Handle the uncommon case of "123[Ptr]". BaseExpr = RHSExp; IndexExpr = LHSExp; ResultType = PTy->getPointeeType(); } else if (const ObjCObjectPointerType *PTy = RHSTy->getAs()) { // Handle the uncommon case of "123[Ptr]". BaseExpr = RHSExp; IndexExpr = LHSExp; ResultType = PTy->getPointeeType(); if (!LangOpts.isSubscriptPointerArithmetic()) { Diag(LLoc, diag::err_subscript_nonfragile_interface) << ResultType << BaseExpr->getSourceRange(); return ExprError(); } } else if (const VectorType *VTy = LHSTy->getAs()) { BaseExpr = LHSExp; // vectors: V[123] IndexExpr = RHSExp; // We apply C++ DR1213 to vector subscripting too. if (getLangOpts().CPlusPlus11 && LHSExp->getValueKind() == VK_RValue) { ExprResult Materialized = TemporaryMaterializationConversion(LHSExp); if (Materialized.isInvalid()) return ExprError(); LHSExp = Materialized.get(); } VK = LHSExp->getValueKind(); if (VK != VK_RValue) OK = OK_VectorComponent; ResultType = VTy->getElementType(); QualType BaseType = BaseExpr->getType(); Qualifiers BaseQuals = BaseType.getQualifiers(); Qualifiers MemberQuals = ResultType.getQualifiers(); Qualifiers Combined = BaseQuals + MemberQuals; if (Combined != MemberQuals) ResultType = Context.getQualifiedType(ResultType, Combined); } else if (LHSTy->isArrayType()) { // If we see an array that wasn't promoted by // DefaultFunctionArrayLvalueConversion, it must be an array that // wasn't promoted because of the C90 rule that doesn't // allow promoting non-lvalue arrays. Warn, then // force the promotion here. Diag(LHSExp->getBeginLoc(), diag::ext_subscript_non_lvalue) << LHSExp->getSourceRange(); LHSExp = ImpCastExprToType(LHSExp, Context.getArrayDecayedType(LHSTy), CK_ArrayToPointerDecay).get(); LHSTy = LHSExp->getType(); BaseExpr = LHSExp; IndexExpr = RHSExp; ResultType = LHSTy->getAs()->getPointeeType(); } else if (RHSTy->isArrayType()) { // Same as previous, except for 123[f().a] case Diag(RHSExp->getBeginLoc(), diag::ext_subscript_non_lvalue) << RHSExp->getSourceRange(); RHSExp = ImpCastExprToType(RHSExp, Context.getArrayDecayedType(RHSTy), CK_ArrayToPointerDecay).get(); RHSTy = RHSExp->getType(); BaseExpr = RHSExp; IndexExpr = LHSExp; ResultType = RHSTy->getAs()->getPointeeType(); } else { return ExprError(Diag(LLoc, diag::err_typecheck_subscript_value) << LHSExp->getSourceRange() << RHSExp->getSourceRange()); } // C99 6.5.2.1p1 if (!IndexExpr->getType()->isIntegerType() && !IndexExpr->isTypeDependent()) return ExprError(Diag(LLoc, diag::err_typecheck_subscript_not_integer) << IndexExpr->getSourceRange()); if ((IndexExpr->getType()->isSpecificBuiltinType(BuiltinType::Char_S) || IndexExpr->getType()->isSpecificBuiltinType(BuiltinType::Char_U)) && !IndexExpr->isTypeDependent()) Diag(LLoc, diag::warn_subscript_is_char) << IndexExpr->getSourceRange(); // C99 6.5.2.1p1: "shall have type "pointer to *object* type". Similarly, // C++ [expr.sub]p1: The type "T" shall be a completely-defined object // type. Note that Functions are not objects, and that (in C99 parlance) // incomplete types are not object types. if (ResultType->isFunctionType()) { Diag(BaseExpr->getBeginLoc(), diag::err_subscript_function_type) << ResultType << BaseExpr->getSourceRange(); return ExprError(); } if (ResultType->isVoidType() && !getLangOpts().CPlusPlus) { // GNU extension: subscripting on pointer to void Diag(LLoc, diag::ext_gnu_subscript_void_type) << BaseExpr->getSourceRange(); // C forbids expressions of unqualified void type from being l-values. // See IsCForbiddenLValueType. if (!ResultType.hasQualifiers()) VK = VK_RValue; } else if (!ResultType->isDependentType() && RequireCompleteSizedType( LLoc, ResultType, diag::err_subscript_incomplete_or_sizeless_type, BaseExpr)) return ExprError(); assert(VK == VK_RValue || LangOpts.CPlusPlus || !ResultType.isCForbiddenLValueType()); if (LHSExp->IgnoreParenImpCasts()->getType()->isVariablyModifiedType() && FunctionScopes.size() > 1) { if (auto *TT = LHSExp->IgnoreParenImpCasts()->getType()->getAs()) { for (auto I = FunctionScopes.rbegin(), E = std::prev(FunctionScopes.rend()); I != E; ++I) { auto *CSI = dyn_cast(*I); if (CSI == nullptr) break; DeclContext *DC = nullptr; if (auto *LSI = dyn_cast(CSI)) DC = LSI->CallOperator; else if (auto *CRSI = dyn_cast(CSI)) DC = CRSI->TheCapturedDecl; else if (auto *BSI = dyn_cast(CSI)) DC = BSI->TheDecl; if (DC) { if (DC->containsDecl(TT->getDecl())) break; captureVariablyModifiedType( Context, LHSExp->IgnoreParenImpCasts()->getType(), CSI); } } } } return new (Context) ArraySubscriptExpr(LHSExp, RHSExp, ResultType, VK, OK, RLoc); } bool Sema::CheckCXXDefaultArgExpr(SourceLocation CallLoc, FunctionDecl *FD, ParmVarDecl *Param) { if (Param->hasUnparsedDefaultArg()) { // If we've already cleared out the location for the default argument, // that means we're parsing it right now. if (!UnparsedDefaultArgLocs.count(Param)) { Diag(Param->getBeginLoc(), diag::err_recursive_default_argument) << FD; Diag(CallLoc, diag::note_recursive_default_argument_used_here); Param->setInvalidDecl(); return true; } Diag(CallLoc, diag::err_use_of_default_argument_to_function_declared_later) << FD << cast(FD->getDeclContext()); Diag(UnparsedDefaultArgLocs[Param], diag::note_default_argument_declared_here); return true; } if (Param->hasUninstantiatedDefaultArg() && InstantiateDefaultArgument(CallLoc, FD, Param)) return true; assert(Param->hasInit() && "default argument but no initializer?"); // If the default expression creates temporaries, we need to // push them to the current stack of expression temporaries so they'll // be properly destroyed. // FIXME: We should really be rebuilding the default argument with new // bound temporaries; see the comment in PR5810. // We don't need to do that with block decls, though, because // blocks in default argument expression can never capture anything. if (auto Init = dyn_cast(Param->getInit())) { // Set the "needs cleanups" bit regardless of whether there are // any explicit objects. Cleanup.setExprNeedsCleanups(Init->cleanupsHaveSideEffects()); // Append all the objects to the cleanup list. Right now, this // should always be a no-op, because blocks in default argument // expressions should never be able to capture anything. assert(!Init->getNumObjects() && "default argument expression has capturing blocks?"); } // We already type-checked the argument, so we know it works. // Just mark all of the declarations in this potentially-evaluated expression // as being "referenced". EnterExpressionEvaluationContext EvalContext( *this, ExpressionEvaluationContext::PotentiallyEvaluated, Param); MarkDeclarationsReferencedInExpr(Param->getDefaultArg(), /*SkipLocalVariables=*/true); return false; } ExprResult Sema::BuildCXXDefaultArgExpr(SourceLocation CallLoc, FunctionDecl *FD, ParmVarDecl *Param) { assert(Param->hasDefaultArg() && "can't build nonexistent default arg"); if (CheckCXXDefaultArgExpr(CallLoc, FD, Param)) return ExprError(); return CXXDefaultArgExpr::Create(Context, CallLoc, Param, CurContext); } Sema::VariadicCallType Sema::getVariadicCallType(FunctionDecl *FDecl, const FunctionProtoType *Proto, Expr *Fn) { if (Proto && Proto->isVariadic()) { if (dyn_cast_or_null(FDecl)) return VariadicConstructor; else if (Fn && Fn->getType()->isBlockPointerType()) return VariadicBlock; else if (FDecl) { if (CXXMethodDecl *Method = dyn_cast_or_null(FDecl)) if (Method->isInstance()) return VariadicMethod; } else if (Fn && Fn->getType() == Context.BoundMemberTy) return VariadicMethod; return VariadicFunction; } return VariadicDoesNotApply; } namespace { class FunctionCallCCC final : public FunctionCallFilterCCC { public: FunctionCallCCC(Sema &SemaRef, const IdentifierInfo *FuncName, unsigned NumArgs, MemberExpr *ME) : FunctionCallFilterCCC(SemaRef, NumArgs, false, ME), FunctionName(FuncName) {} bool ValidateCandidate(const TypoCorrection &candidate) override { if (!candidate.getCorrectionSpecifier() || candidate.getCorrectionAsIdentifierInfo() != FunctionName) { return false; } return FunctionCallFilterCCC::ValidateCandidate(candidate); } std::unique_ptr clone() override { return std::make_unique(*this); } private: const IdentifierInfo *const FunctionName; }; } static TypoCorrection TryTypoCorrectionForCall(Sema &S, Expr *Fn, FunctionDecl *FDecl, ArrayRef Args) { MemberExpr *ME = dyn_cast(Fn); DeclarationName FuncName = FDecl->getDeclName(); SourceLocation NameLoc = ME ? ME->getMemberLoc() : Fn->getBeginLoc(); FunctionCallCCC CCC(S, FuncName.getAsIdentifierInfo(), Args.size(), ME); if (TypoCorrection Corrected = S.CorrectTypo( DeclarationNameInfo(FuncName, NameLoc), Sema::LookupOrdinaryName, S.getScopeForContext(S.CurContext), nullptr, CCC, Sema::CTK_ErrorRecovery)) { if (NamedDecl *ND = Corrected.getFoundDecl()) { if (Corrected.isOverloaded()) { OverloadCandidateSet OCS(NameLoc, OverloadCandidateSet::CSK_Normal); OverloadCandidateSet::iterator Best; for (NamedDecl *CD : Corrected) { if (FunctionDecl *FD = dyn_cast(CD)) S.AddOverloadCandidate(FD, DeclAccessPair::make(FD, AS_none), Args, OCS); } switch (OCS.BestViableFunction(S, NameLoc, Best)) { case OR_Success: ND = Best->FoundDecl; Corrected.setCorrectionDecl(ND); break; default: break; } } ND = ND->getUnderlyingDecl(); if (isa(ND) || isa(ND)) return Corrected; } } return TypoCorrection(); } /// ConvertArgumentsForCall - Converts the arguments specified in /// Args/NumArgs to the parameter types of the function FDecl with /// function prototype Proto. Call is the call expression itself, and /// Fn is the function expression. For a C++ member function, this /// routine does not attempt to convert the object argument. Returns /// true if the call is ill-formed. bool Sema::ConvertArgumentsForCall(CallExpr *Call, Expr *Fn, FunctionDecl *FDecl, const FunctionProtoType *Proto, ArrayRef Args, SourceLocation RParenLoc, bool IsExecConfig) { // Bail out early if calling a builtin with custom typechecking. if (FDecl) if (unsigned ID = FDecl->getBuiltinID()) if (Context.BuiltinInfo.hasCustomTypechecking(ID)) return false; // C99 6.5.2.2p7 - the arguments are implicitly converted, as if by // assignment, to the types of the corresponding parameter, ... unsigned NumParams = Proto->getNumParams(); bool Invalid = false; unsigned MinArgs = FDecl ? FDecl->getMinRequiredArguments() : NumParams; unsigned FnKind = Fn->getType()->isBlockPointerType() ? 1 /* block */ : (IsExecConfig ? 3 /* kernel function (exec config) */ : 0 /* function */); // If too few arguments are available (and we don't have default // arguments for the remaining parameters), don't make the call. if (Args.size() < NumParams) { if (Args.size() < MinArgs) { TypoCorrection TC; if (FDecl && (TC = TryTypoCorrectionForCall(*this, Fn, FDecl, Args))) { unsigned diag_id = MinArgs == NumParams && !Proto->isVariadic() ? diag::err_typecheck_call_too_few_args_suggest : diag::err_typecheck_call_too_few_args_at_least_suggest; diagnoseTypo(TC, PDiag(diag_id) << FnKind << MinArgs << static_cast(Args.size()) << TC.getCorrectionRange()); } else if (MinArgs == 1 && FDecl && FDecl->getParamDecl(0)->getDeclName()) Diag(RParenLoc, MinArgs == NumParams && !Proto->isVariadic() ? diag::err_typecheck_call_too_few_args_one : diag::err_typecheck_call_too_few_args_at_least_one) << FnKind << FDecl->getParamDecl(0) << Fn->getSourceRange(); else Diag(RParenLoc, MinArgs == NumParams && !Proto->isVariadic() ? diag::err_typecheck_call_too_few_args : diag::err_typecheck_call_too_few_args_at_least) << FnKind << MinArgs << static_cast(Args.size()) << Fn->getSourceRange(); // Emit the location of the prototype. if (!TC && FDecl && !FDecl->getBuiltinID() && !IsExecConfig) Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; return true; } // We reserve space for the default arguments when we create // the call expression, before calling ConvertArgumentsForCall. assert((Call->getNumArgs() == NumParams) && "We should have reserved space for the default arguments before!"); } // If too many are passed and not variadic, error on the extras and drop // them. if (Args.size() > NumParams) { if (!Proto->isVariadic()) { TypoCorrection TC; if (FDecl && (TC = TryTypoCorrectionForCall(*this, Fn, FDecl, Args))) { unsigned diag_id = MinArgs == NumParams && !Proto->isVariadic() ? diag::err_typecheck_call_too_many_args_suggest : diag::err_typecheck_call_too_many_args_at_most_suggest; diagnoseTypo(TC, PDiag(diag_id) << FnKind << NumParams << static_cast(Args.size()) << TC.getCorrectionRange()); } else if (NumParams == 1 && FDecl && FDecl->getParamDecl(0)->getDeclName()) Diag(Args[NumParams]->getBeginLoc(), MinArgs == NumParams ? diag::err_typecheck_call_too_many_args_one : diag::err_typecheck_call_too_many_args_at_most_one) << FnKind << FDecl->getParamDecl(0) << static_cast(Args.size()) << Fn->getSourceRange() << SourceRange(Args[NumParams]->getBeginLoc(), Args.back()->getEndLoc()); else Diag(Args[NumParams]->getBeginLoc(), MinArgs == NumParams ? diag::err_typecheck_call_too_many_args : diag::err_typecheck_call_too_many_args_at_most) << FnKind << NumParams << static_cast(Args.size()) << Fn->getSourceRange() << SourceRange(Args[NumParams]->getBeginLoc(), Args.back()->getEndLoc()); // Emit the location of the prototype. if (!TC && FDecl && !FDecl->getBuiltinID() && !IsExecConfig) Diag(FDecl->getLocation(), diag::note_callee_decl) << FDecl; // This deletes the extra arguments. Call->shrinkNumArgs(NumParams); return true; } } SmallVector AllArgs; VariadicCallType CallType = getVariadicCallType(FDecl, Proto, Fn); Invalid = GatherArgumentsForCall(Call->getBeginLoc(), FDecl, Proto, 0, Args, AllArgs, CallType); if (Invalid) return true; unsigned TotalNumArgs = AllArgs.size(); for (unsigned i = 0; i < TotalNumArgs; ++i) Call->setArg(i, AllArgs[i]); return false; } bool Sema::GatherArgumentsForCall(SourceLocation CallLoc, FunctionDecl *FDecl, const FunctionProtoType *Proto, unsigned FirstParam, ArrayRef Args, SmallVectorImpl &AllArgs, VariadicCallType CallType, bool AllowExplicit, bool IsListInitialization) { unsigned NumParams = Proto->getNumParams(); bool Invalid = false; size_t ArgIx = 0; // Continue to check argument types (even if we have too few/many args). for (unsigned i = FirstParam; i < NumParams; i++) { QualType ProtoArgType = Proto->getParamType(i); Expr *Arg; ParmVarDecl *Param = FDecl ? FDecl->getParamDecl(i) : nullptr; if (ArgIx < Args.size()) { Arg = Args[ArgIx++]; if (RequireCompleteType(Arg->getBeginLoc(), ProtoArgType, diag::err_call_incomplete_argument, Arg)) return true; // Strip the unbridged-cast placeholder expression off, if applicable. bool CFAudited = false; if (Arg->getType() == Context.ARCUnbridgedCastTy && FDecl && FDecl->hasAttr() && (!Param || !Param->hasAttr())) Arg = stripARCUnbridgedCast(Arg); else if (getLangOpts().ObjCAutoRefCount && FDecl && FDecl->hasAttr() && (!Param || !Param->hasAttr())) CFAudited = true; if (Proto->getExtParameterInfo(i).isNoEscape()) if (auto *BE = dyn_cast(Arg->IgnoreParenNoopCasts(Context))) BE->getBlockDecl()->setDoesNotEscape(); InitializedEntity Entity = Param ? InitializedEntity::InitializeParameter(Context, Param, ProtoArgType) : InitializedEntity::InitializeParameter( Context, ProtoArgType, Proto->isParamConsumed(i)); // Remember that parameter belongs to a CF audited API. if (CFAudited) Entity.setParameterCFAudited(); ExprResult ArgE = PerformCopyInitialization( Entity, SourceLocation(), Arg, IsListInitialization, AllowExplicit); if (ArgE.isInvalid()) return true; Arg = ArgE.getAs(); } else { assert(Param && "can't use default arguments without a known callee"); ExprResult ArgExpr = BuildCXXDefaultArgExpr(CallLoc, FDecl, Param); if (ArgExpr.isInvalid()) return true; Arg = ArgExpr.getAs(); } // Check for array bounds violations for each argument to the call. This // check only triggers warnings when the argument isn't a more complex Expr // with its own checking, such as a BinaryOperator. CheckArrayAccess(Arg); // Check for violations of C99 static array rules (C99 6.7.5.3p7). CheckStaticArrayArgument(CallLoc, Param, Arg); AllArgs.push_back(Arg); } // If this is a variadic call, handle args passed through "...". if (CallType != VariadicDoesNotApply) { // Assume that extern "C" functions with variadic arguments that // return __unknown_anytype aren't *really* variadic. if (Proto->getReturnType() == Context.UnknownAnyTy && FDecl && FDecl->isExternC()) { for (Expr *A : Args.slice(ArgIx)) { QualType paramType; // ignored ExprResult arg = checkUnknownAnyArg(CallLoc, A, paramType); Invalid |= arg.isInvalid(); AllArgs.push_back(arg.get()); } // Otherwise do argument promotion, (C99 6.5.2.2p7). } else { for (Expr *A : Args.slice(ArgIx)) { ExprResult Arg = DefaultVariadicArgumentPromotion(A, CallType, FDecl); Invalid |= Arg.isInvalid(); AllArgs.push_back(Arg.get()); } } // Check for array bounds violations. for (Expr *A : Args.slice(ArgIx)) CheckArrayAccess(A); } return Invalid; } static void DiagnoseCalleeStaticArrayParam(Sema &S, ParmVarDecl *PVD) { TypeLoc TL = PVD->getTypeSourceInfo()->getTypeLoc(); if (DecayedTypeLoc DTL = TL.getAs()) TL = DTL.getOriginalLoc(); if (ArrayTypeLoc ATL = TL.getAs()) S.Diag(PVD->getLocation(), diag::note_callee_static_array) << ATL.getLocalSourceRange(); } /// CheckStaticArrayArgument - If the given argument corresponds to a static /// array parameter, check that it is non-null, and that if it is formed by /// array-to-pointer decay, the underlying array is sufficiently large. /// /// C99 6.7.5.3p7: If the keyword static also appears within the [ and ] of the /// array type derivation, then for each call to the function, the value of the /// corresponding actual argument shall provide access to the first element of /// an array with at least as many elements as specified by the size expression. void Sema::CheckStaticArrayArgument(SourceLocation CallLoc, ParmVarDecl *Param, const Expr *ArgExpr) { // Static array parameters are not supported in C++. if (!Param || getLangOpts().CPlusPlus) return; QualType OrigTy = Param->getOriginalType(); const ArrayType *AT = Context.getAsArrayType(OrigTy); if (!AT || AT->getSizeModifier() != ArrayType::Static) return; if (ArgExpr->isNullPointerConstant(Context, Expr::NPC_NeverValueDependent)) { Diag(CallLoc, diag::warn_null_arg) << ArgExpr->getSourceRange(); DiagnoseCalleeStaticArrayParam(*this, Param); return; } const ConstantArrayType *CAT = dyn_cast(AT); if (!CAT) return; const ConstantArrayType *ArgCAT = Context.getAsConstantArrayType(ArgExpr->IgnoreParenCasts()->getType()); if (!ArgCAT) return; if (getASTContext().hasSameUnqualifiedType(CAT->getElementType(), ArgCAT->getElementType())) { if (ArgCAT->getSize().ult(CAT->getSize())) { Diag(CallLoc, diag::warn_static_array_too_small) << ArgExpr->getSourceRange() << (unsigned)ArgCAT->getSize().getZExtValue() << (unsigned)CAT->getSize().getZExtValue() << 0; DiagnoseCalleeStaticArrayParam(*this, Param); } return; } Optional ArgSize = getASTContext().getTypeSizeInCharsIfKnown(ArgCAT); Optional ParmSize = getASTContext().getTypeSizeInCharsIfKnown(CAT); if (ArgSize && ParmSize && *ArgSize < *ParmSize) { Diag(CallLoc, diag::warn_static_array_too_small) << ArgExpr->getSourceRange() << (unsigned)ArgSize->getQuantity() << (unsigned)ParmSize->getQuantity() << 1; DiagnoseCalleeStaticArrayParam(*this, Param); } } /// Given a function expression of unknown-any type, try to rebuild it /// to have a function type. static ExprResult rebuildUnknownAnyFunction(Sema &S, Expr *fn); /// Is the given type a placeholder that we need to lower out /// immediately during argument processing? static bool isPlaceholderToRemoveAsArg(QualType type) { // Placeholders are never sugared. const BuiltinType *placeholder = dyn_cast(type); if (!placeholder) return false; switch (placeholder->getKind()) { // Ignore all the non-placeholder types. #define IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) \ case BuiltinType::Id: #include "clang/Basic/OpenCLImageTypes.def" #define EXT_OPAQUE_TYPE(ExtType, Id, Ext) \ case BuiltinType::Id: #include "clang/Basic/OpenCLExtensionTypes.def" // In practice we'll never use this, since all SVE types are sugared // via TypedefTypes rather than exposed directly as BuiltinTypes. #define SVE_TYPE(Name, Id, SingletonId) \ case BuiltinType::Id: #include "clang/Basic/AArch64SVEACLETypes.def" #define PPC_VECTOR_TYPE(Name, Id, Size) \ case BuiltinType::Id: #include "clang/Basic/PPCTypes.def" #define PLACEHOLDER_TYPE(ID, SINGLETON_ID) #define BUILTIN_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: #include "clang/AST/BuiltinTypes.def" return false; // We cannot lower out overload sets; they might validly be resolved // by the call machinery. case BuiltinType::Overload: return false; // Unbridged casts in ARC can be handled in some call positions and // should be left in place. case BuiltinType::ARCUnbridgedCast: return false; // Pseudo-objects should be converted as soon as possible. case BuiltinType::PseudoObject: return true; // The debugger mode could theoretically but currently does not try // to resolve unknown-typed arguments based on known parameter types. case BuiltinType::UnknownAny: return true; // These are always invalid as call arguments and should be reported. case BuiltinType::BoundMember: case BuiltinType::BuiltinFn: case BuiltinType::IncompleteMatrixIdx: case BuiltinType::OMPArraySection: case BuiltinType::OMPArrayShaping: case BuiltinType::OMPIterator: return true; } llvm_unreachable("bad builtin type kind"); } /// Check an argument list for placeholders that we won't try to /// handle later. static bool checkArgsForPlaceholders(Sema &S, MultiExprArg args) { // Apply this processing to all the arguments at once instead of // dying at the first failure. bool hasInvalid = false; for (size_t i = 0, e = args.size(); i != e; i++) { if (isPlaceholderToRemoveAsArg(args[i]->getType())) { ExprResult result = S.CheckPlaceholderExpr(args[i]); if (result.isInvalid()) hasInvalid = true; else args[i] = result.get(); } } return hasInvalid; } /// If a builtin function has a pointer argument with no explicit address /// space, then it should be able to accept a pointer to any address /// space as input. In order to do this, we need to replace the /// standard builtin declaration with one that uses the same address space /// as the call. /// /// \returns nullptr If this builtin is not a candidate for a rewrite i.e. /// it does not contain any pointer arguments without /// an address space qualifer. Otherwise the rewritten /// FunctionDecl is returned. /// TODO: Handle pointer return types. static FunctionDecl *rewriteBuiltinFunctionDecl(Sema *Sema, ASTContext &Context, FunctionDecl *FDecl, MultiExprArg ArgExprs) { QualType DeclType = FDecl->getType(); const FunctionProtoType *FT = dyn_cast(DeclType); if (!Context.BuiltinInfo.hasPtrArgsOrResult(FDecl->getBuiltinID()) || !FT || ArgExprs.size() < FT->getNumParams()) return nullptr; bool NeedsNewDecl = false; unsigned i = 0; SmallVector OverloadParams; for (QualType ParamType : FT->param_types()) { // Convert array arguments to pointer to simplify type lookup. ExprResult ArgRes = Sema->DefaultFunctionArrayLvalueConversion(ArgExprs[i++]); if (ArgRes.isInvalid()) return nullptr; Expr *Arg = ArgRes.get(); QualType ArgType = Arg->getType(); if (!ParamType->isPointerType() || ParamType.hasAddressSpace() || !ArgType->isPointerType() || !ArgType->getPointeeType().hasAddressSpace()) { OverloadParams.push_back(ParamType); continue; } QualType PointeeType = ParamType->getPointeeType(); if (PointeeType.hasAddressSpace()) continue; NeedsNewDecl = true; LangAS AS = ArgType->getPointeeType().getAddressSpace(); PointeeType = Context.getAddrSpaceQualType(PointeeType, AS); OverloadParams.push_back(Context.getPointerType(PointeeType)); } if (!NeedsNewDecl) return nullptr; FunctionProtoType::ExtProtoInfo EPI; EPI.Variadic = FT->isVariadic(); QualType OverloadTy = Context.getFunctionType(FT->getReturnType(), OverloadParams, EPI); DeclContext *Parent = FDecl->getParent(); FunctionDecl *OverloadDecl = FunctionDecl::Create(Context, Parent, FDecl->getLocation(), FDecl->getLocation(), FDecl->getIdentifier(), OverloadTy, /*TInfo=*/nullptr, SC_Extern, false, /*hasPrototype=*/true); SmallVector Params; FT = cast(OverloadTy); for (unsigned i = 0, e = FT->getNumParams(); i != e; ++i) { QualType ParamType = FT->getParamType(i); ParmVarDecl *Parm = ParmVarDecl::Create(Context, OverloadDecl, SourceLocation(), SourceLocation(), nullptr, ParamType, /*TInfo=*/nullptr, SC_None, nullptr); Parm->setScopeInfo(0, i); Params.push_back(Parm); } OverloadDecl->setParams(Params); Sema->mergeDeclAttributes(OverloadDecl, FDecl); return OverloadDecl; } static void checkDirectCallValidity(Sema &S, const Expr *Fn, FunctionDecl *Callee, MultiExprArg ArgExprs) { // `Callee` (when called with ArgExprs) may be ill-formed. enable_if (and // similar attributes) really don't like it when functions are called with an // invalid number of args. if (S.TooManyArguments(Callee->getNumParams(), ArgExprs.size(), /*PartialOverloading=*/false) && !Callee->isVariadic()) return; if (Callee->getMinRequiredArguments() > ArgExprs.size()) return; if (const EnableIfAttr *Attr = S.CheckEnableIf(Callee, Fn->getBeginLoc(), ArgExprs, true)) { S.Diag(Fn->getBeginLoc(), isa(Callee) ? diag::err_ovl_no_viable_member_function_in_call : diag::err_ovl_no_viable_function_in_call) << Callee << Callee->getSourceRange(); S.Diag(Callee->getLocation(), diag::note_ovl_candidate_disabled_by_function_cond_attr) << Attr->getCond()->getSourceRange() << Attr->getMessage(); return; } } static bool enclosingClassIsRelatedToClassInWhichMembersWereFound( const UnresolvedMemberExpr *const UME, Sema &S) { const auto GetFunctionLevelDCIfCXXClass = [](Sema &S) -> const CXXRecordDecl * { const DeclContext *const DC = S.getFunctionLevelDeclContext(); if (!DC || !DC->getParent()) return nullptr; // If the call to some member function was made from within a member // function body 'M' return return 'M's parent. if (const auto *MD = dyn_cast(DC)) return MD->getParent()->getCanonicalDecl(); // else the call was made from within a default member initializer of a // class, so return the class. if (const auto *RD = dyn_cast(DC)) return RD->getCanonicalDecl(); return nullptr; }; // If our DeclContext is neither a member function nor a class (in the // case of a lambda in a default member initializer), we can't have an // enclosing 'this'. const CXXRecordDecl *const CurParentClass = GetFunctionLevelDCIfCXXClass(S); if (!CurParentClass) return false; // The naming class for implicit member functions call is the class in which // name lookup starts. const CXXRecordDecl *const NamingClass = UME->getNamingClass()->getCanonicalDecl(); assert(NamingClass && "Must have naming class even for implicit access"); // If the unresolved member functions were found in a 'naming class' that is // related (either the same or derived from) to the class that contains the // member function that itself contained the implicit member access. return CurParentClass == NamingClass || CurParentClass->isDerivedFrom(NamingClass); } static void tryImplicitlyCaptureThisIfImplicitMemberFunctionAccessWithDependentArgs( Sema &S, const UnresolvedMemberExpr *const UME, SourceLocation CallLoc) { if (!UME) return; LambdaScopeInfo *const CurLSI = S.getCurLambda(); // Only try and implicitly capture 'this' within a C++ Lambda if it hasn't // already been captured, or if this is an implicit member function call (if // it isn't, an attempt to capture 'this' should already have been made). if (!CurLSI || CurLSI->ImpCaptureStyle == CurLSI->ImpCap_None || !UME->isImplicitAccess() || CurLSI->isCXXThisCaptured()) return; // Check if the naming class in which the unresolved members were found is // related (same as or is a base of) to the enclosing class. if (!enclosingClassIsRelatedToClassInWhichMembersWereFound(UME, S)) return; DeclContext *EnclosingFunctionCtx = S.CurContext->getParent()->getParent(); // If the enclosing function is not dependent, then this lambda is // capture ready, so if we can capture this, do so. if (!EnclosingFunctionCtx->isDependentContext()) { // If the current lambda and all enclosing lambdas can capture 'this' - // then go ahead and capture 'this' (since our unresolved overload set // contains at least one non-static member function). if (!S.CheckCXXThisCapture(CallLoc, /*Explcit*/ false, /*Diagnose*/ false)) S.CheckCXXThisCapture(CallLoc); } else if (S.CurContext->isDependentContext()) { // ... since this is an implicit member reference, that might potentially // involve a 'this' capture, mark 'this' for potential capture in // enclosing lambdas. if (CurLSI->ImpCaptureStyle != CurLSI->ImpCap_None) CurLSI->addPotentialThisCapture(CallLoc); } } ExprResult Sema::ActOnCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, MultiExprArg ArgExprs, SourceLocation RParenLoc, Expr *ExecConfig) { ExprResult Call = BuildCallExpr(Scope, Fn, LParenLoc, ArgExprs, RParenLoc, ExecConfig, /*IsExecConfig=*/false, /*AllowRecovery=*/true); if (Call.isInvalid()) return Call; // Diagnose uses of the C++20 "ADL-only template-id call" feature in earlier // language modes. if (auto *ULE = dyn_cast(Fn)) { if (ULE->hasExplicitTemplateArgs() && ULE->decls_begin() == ULE->decls_end()) { Diag(Fn->getExprLoc(), getLangOpts().CPlusPlus20 ? diag::warn_cxx17_compat_adl_only_template_id : diag::ext_adl_only_template_id) << ULE->getName(); } } if (LangOpts.OpenMP) Call = ActOnOpenMPCall(Call, Scope, LParenLoc, ArgExprs, RParenLoc, ExecConfig); return Call; } /// BuildCallExpr - Handle a call to Fn with the specified array of arguments. /// This provides the location of the left/right parens and a list of comma /// locations. ExprResult Sema::BuildCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, MultiExprArg ArgExprs, SourceLocation RParenLoc, Expr *ExecConfig, bool IsExecConfig, bool AllowRecovery) { // Since this might be a postfix expression, get rid of ParenListExprs. ExprResult Result = MaybeConvertParenListExprToParenExpr(Scope, Fn); if (Result.isInvalid()) return ExprError(); Fn = Result.get(); if (checkArgsForPlaceholders(*this, ArgExprs)) return ExprError(); if (getLangOpts().CPlusPlus) { // If this is a pseudo-destructor expression, build the call immediately. if (isa(Fn)) { if (!ArgExprs.empty()) { // Pseudo-destructor calls should not have any arguments. Diag(Fn->getBeginLoc(), diag::err_pseudo_dtor_call_with_args) << FixItHint::CreateRemoval( SourceRange(ArgExprs.front()->getBeginLoc(), ArgExprs.back()->getEndLoc())); } return CallExpr::Create(Context, Fn, /*Args=*/{}, Context.VoidTy, VK_RValue, RParenLoc, CurFPFeatureOverrides()); } if (Fn->getType() == Context.PseudoObjectTy) { ExprResult result = CheckPlaceholderExpr(Fn); if (result.isInvalid()) return ExprError(); Fn = result.get(); } // Determine whether this is a dependent call inside a C++ template, // in which case we won't do any semantic analysis now. if (Fn->isTypeDependent() || Expr::hasAnyTypeDependentArguments(ArgExprs)) { if (ExecConfig) { return CUDAKernelCallExpr::Create( Context, Fn, cast(ExecConfig), ArgExprs, Context.DependentTy, VK_RValue, RParenLoc, CurFPFeatureOverrides()); } else { tryImplicitlyCaptureThisIfImplicitMemberFunctionAccessWithDependentArgs( *this, dyn_cast(Fn->IgnoreParens()), Fn->getBeginLoc()); return CallExpr::Create(Context, Fn, ArgExprs, Context.DependentTy, VK_RValue, RParenLoc, CurFPFeatureOverrides()); } } // Determine whether this is a call to an object (C++ [over.call.object]). if (Fn->getType()->isRecordType()) return BuildCallToObjectOfClassType(Scope, Fn, LParenLoc, ArgExprs, RParenLoc); if (Fn->getType() == Context.UnknownAnyTy) { ExprResult result = rebuildUnknownAnyFunction(*this, Fn); if (result.isInvalid()) return ExprError(); Fn = result.get(); } if (Fn->getType() == Context.BoundMemberTy) { return BuildCallToMemberFunction(Scope, Fn, LParenLoc, ArgExprs, RParenLoc, AllowRecovery); } } // Check for overloaded calls. This can happen even in C due to extensions. if (Fn->getType() == Context.OverloadTy) { OverloadExpr::FindResult find = OverloadExpr::find(Fn); // We aren't supposed to apply this logic if there's an '&' involved. if (!find.HasFormOfMemberPointer) { if (Expr::hasAnyTypeDependentArguments(ArgExprs)) return CallExpr::Create(Context, Fn, ArgExprs, Context.DependentTy, VK_RValue, RParenLoc, CurFPFeatureOverrides()); OverloadExpr *ovl = find.Expression; if (UnresolvedLookupExpr *ULE = dyn_cast(ovl)) return BuildOverloadedCallExpr( Scope, Fn, ULE, LParenLoc, ArgExprs, RParenLoc, ExecConfig, /*AllowTypoCorrection=*/true, find.IsAddressOfOperand); return BuildCallToMemberFunction(Scope, Fn, LParenLoc, ArgExprs, RParenLoc, AllowRecovery); } } // If we're directly calling a function, get the appropriate declaration. if (Fn->getType() == Context.UnknownAnyTy) { ExprResult result = rebuildUnknownAnyFunction(*this, Fn); if (result.isInvalid()) return ExprError(); Fn = result.get(); } Expr *NakedFn = Fn->IgnoreParens(); bool CallingNDeclIndirectly = false; NamedDecl *NDecl = nullptr; if (UnaryOperator *UnOp = dyn_cast(NakedFn)) { if (UnOp->getOpcode() == UO_AddrOf) { CallingNDeclIndirectly = true; NakedFn = UnOp->getSubExpr()->IgnoreParens(); } } if (auto *DRE = dyn_cast(NakedFn)) { NDecl = DRE->getDecl(); FunctionDecl *FDecl = dyn_cast(NDecl); if (FDecl && FDecl->getBuiltinID()) { // Rewrite the function decl for this builtin by replacing parameters // with no explicit address space with the address space of the arguments // in ArgExprs. if ((FDecl = rewriteBuiltinFunctionDecl(this, Context, FDecl, ArgExprs))) { NDecl = FDecl; Fn = DeclRefExpr::Create( Context, FDecl->getQualifierLoc(), SourceLocation(), FDecl, false, SourceLocation(), FDecl->getType(), Fn->getValueKind(), FDecl, nullptr, DRE->isNonOdrUse()); } } } else if (isa(NakedFn)) NDecl = cast(NakedFn)->getMemberDecl(); if (FunctionDecl *FD = dyn_cast_or_null(NDecl)) { if (CallingNDeclIndirectly && !checkAddressOfFunctionIsAvailable( FD, /*Complain=*/true, Fn->getBeginLoc())) return ExprError(); if (getLangOpts().OpenCL && checkOpenCLDisabledDecl(*FD, *Fn)) return ExprError(); checkDirectCallValidity(*this, Fn, FD, ArgExprs); } if (Context.isDependenceAllowed() && (Fn->isTypeDependent() || Expr::hasAnyTypeDependentArguments(ArgExprs))) { assert(!getLangOpts().CPlusPlus); assert((Fn->containsErrors() || llvm::any_of(ArgExprs, [](clang::Expr *E) { return E->containsErrors(); })) && "should only occur in error-recovery path."); QualType ReturnType = llvm::isa_and_nonnull(NDecl) ? cast(NDecl)->getCallResultType() : Context.DependentTy; return CallExpr::Create(Context, Fn, ArgExprs, ReturnType, Expr::getValueKindForType(ReturnType), RParenLoc, CurFPFeatureOverrides()); } return BuildResolvedCallExpr(Fn, NDecl, LParenLoc, ArgExprs, RParenLoc, ExecConfig, IsExecConfig); } /// ActOnAsTypeExpr - create a new asType (bitcast) from the arguments. /// /// __builtin_astype( value, dst type ) /// ExprResult Sema::ActOnAsTypeExpr(Expr *E, ParsedType ParsedDestTy, SourceLocation BuiltinLoc, SourceLocation RParenLoc) { ExprValueKind VK = VK_RValue; ExprObjectKind OK = OK_Ordinary; QualType DstTy = GetTypeFromParser(ParsedDestTy); QualType SrcTy = E->getType(); if (Context.getTypeSize(DstTy) != Context.getTypeSize(SrcTy)) return ExprError(Diag(BuiltinLoc, diag::err_invalid_astype_of_different_size) << DstTy << SrcTy << E->getSourceRange()); return new (Context) AsTypeExpr(E, DstTy, VK, OK, BuiltinLoc, RParenLoc); } /// ActOnConvertVectorExpr - create a new convert-vector expression from the /// provided arguments. /// /// __builtin_convertvector( value, dst type ) /// ExprResult Sema::ActOnConvertVectorExpr(Expr *E, ParsedType ParsedDestTy, SourceLocation BuiltinLoc, SourceLocation RParenLoc) { TypeSourceInfo *TInfo; GetTypeFromParser(ParsedDestTy, &TInfo); return SemaConvertVectorExpr(E, TInfo, BuiltinLoc, RParenLoc); } /// BuildResolvedCallExpr - Build a call to a resolved expression, /// i.e. an expression not of \p OverloadTy. The expression should /// unary-convert to an expression of function-pointer or /// block-pointer type. /// /// \param NDecl the declaration being called, if available ExprResult Sema::BuildResolvedCallExpr(Expr *Fn, NamedDecl *NDecl, SourceLocation LParenLoc, ArrayRef Args, SourceLocation RParenLoc, Expr *Config, bool IsExecConfig, ADLCallKind UsesADL) { FunctionDecl *FDecl = dyn_cast_or_null(NDecl); unsigned BuiltinID = (FDecl ? FDecl->getBuiltinID() : 0); // Functions with 'interrupt' attribute cannot be called directly. if (FDecl && FDecl->hasAttr()) { Diag(Fn->getExprLoc(), diag::err_anyx86_interrupt_called); return ExprError(); } // Interrupt handlers don't save off the VFP regs automatically on ARM, // so there's some risk when calling out to non-interrupt handler functions // that the callee might not preserve them. This is easy to diagnose here, // but can be very challenging to debug. if (auto *Caller = getCurFunctionDecl()) if (Caller->hasAttr()) { bool VFP = Context.getTargetInfo().hasFeature("vfp"); if (VFP && (!FDecl || !FDecl->hasAttr())) Diag(Fn->getExprLoc(), diag::warn_arm_interrupt_calling_convention); } // Promote the function operand. // We special-case function promotion here because we only allow promoting // builtin functions to function pointers in the callee of a call. ExprResult Result; QualType ResultTy; if (BuiltinID && Fn->getType()->isSpecificBuiltinType(BuiltinType::BuiltinFn)) { // Extract the return type from the (builtin) function pointer type. // FIXME Several builtins still have setType in // Sema::CheckBuiltinFunctionCall. One should review their definitions in // Builtins.def to ensure they are correct before removing setType calls. QualType FnPtrTy = Context.getPointerType(FDecl->getType()); Result = ImpCastExprToType(Fn, FnPtrTy, CK_BuiltinFnToFnPtr).get(); ResultTy = FDecl->getCallResultType(); } else { Result = CallExprUnaryConversions(Fn); ResultTy = Context.BoolTy; } if (Result.isInvalid()) return ExprError(); Fn = Result.get(); // Check for a valid function type, but only if it is not a builtin which // requires custom type checking. These will be handled by // CheckBuiltinFunctionCall below just after creation of the call expression. const FunctionType *FuncT = nullptr; if (!BuiltinID || !Context.BuiltinInfo.hasCustomTypechecking(BuiltinID)) { retry: if (const PointerType *PT = Fn->getType()->getAs()) { // C99 6.5.2.2p1 - "The expression that denotes the called function shall // have type pointer to function". FuncT = PT->getPointeeType()->getAs(); if (!FuncT) return ExprError(Diag(LParenLoc, diag::err_typecheck_call_not_function) << Fn->getType() << Fn->getSourceRange()); } else if (const BlockPointerType *BPT = Fn->getType()->getAs()) { FuncT = BPT->getPointeeType()->castAs(); } else { // Handle calls to expressions of unknown-any type. if (Fn->getType() == Context.UnknownAnyTy) { ExprResult rewrite = rebuildUnknownAnyFunction(*this, Fn); if (rewrite.isInvalid()) return ExprError(); Fn = rewrite.get(); goto retry; } return ExprError(Diag(LParenLoc, diag::err_typecheck_call_not_function) << Fn->getType() << Fn->getSourceRange()); } } // Get the number of parameters in the function prototype, if any. // We will allocate space for max(Args.size(), NumParams) arguments // in the call expression. const auto *Proto = dyn_cast_or_null(FuncT); unsigned NumParams = Proto ? Proto->getNumParams() : 0; CallExpr *TheCall; if (Config) { assert(UsesADL == ADLCallKind::NotADL && "CUDAKernelCallExpr should not use ADL"); TheCall = CUDAKernelCallExpr::Create(Context, Fn, cast(Config), Args, ResultTy, VK_RValue, RParenLoc, CurFPFeatureOverrides(), NumParams); } else { TheCall = CallExpr::Create(Context, Fn, Args, ResultTy, VK_RValue, RParenLoc, CurFPFeatureOverrides(), NumParams, UsesADL); } if (!Context.isDependenceAllowed()) { // Forget about the nulled arguments since typo correction // do not handle them well. TheCall->shrinkNumArgs(Args.size()); // C cannot always handle TypoExpr nodes in builtin calls and direct // function calls as their argument checking don't necessarily handle // dependent types properly, so make sure any TypoExprs have been // dealt with. ExprResult Result = CorrectDelayedTyposInExpr(TheCall); if (!Result.isUsable()) return ExprError(); CallExpr *TheOldCall = TheCall; TheCall = dyn_cast(Result.get()); bool CorrectedTypos = TheCall != TheOldCall; if (!TheCall) return Result; Args = llvm::makeArrayRef(TheCall->getArgs(), TheCall->getNumArgs()); // A new call expression node was created if some typos were corrected. // However it may not have been constructed with enough storage. In this // case, rebuild the node with enough storage. The waste of space is // immaterial since this only happens when some typos were corrected. if (CorrectedTypos && Args.size() < NumParams) { if (Config) TheCall = CUDAKernelCallExpr::Create( Context, Fn, cast(Config), Args, ResultTy, VK_RValue, RParenLoc, CurFPFeatureOverrides(), NumParams); else TheCall = CallExpr::Create(Context, Fn, Args, ResultTy, VK_RValue, RParenLoc, CurFPFeatureOverrides(), NumParams, UsesADL); } // We can now handle the nulled arguments for the default arguments. TheCall->setNumArgsUnsafe(std::max(Args.size(), NumParams)); } // Bail out early if calling a builtin with custom type checking. if (BuiltinID && Context.BuiltinInfo.hasCustomTypechecking(BuiltinID)) return CheckBuiltinFunctionCall(FDecl, BuiltinID, TheCall); if (getLangOpts().CUDA) { if (Config) { // CUDA: Kernel calls must be to global functions if (FDecl && !FDecl->hasAttr()) return ExprError(Diag(LParenLoc,diag::err_kern_call_not_global_function) << FDecl << Fn->getSourceRange()); // CUDA: Kernel function must have 'void' return type if (!FuncT->getReturnType()->isVoidType() && !FuncT->getReturnType()->getAs() && !FuncT->getReturnType()->isInstantiationDependentType()) return ExprError(Diag(LParenLoc, diag::err_kern_type_not_void_return) << Fn->getType() << Fn->getSourceRange()); } else { // CUDA: Calls to global functions must be configured if (FDecl && FDecl->hasAttr()) return ExprError(Diag(LParenLoc, diag::err_global_call_not_config) << FDecl << Fn->getSourceRange()); } } // Check for a valid return type if (CheckCallReturnType(FuncT->getReturnType(), Fn->getBeginLoc(), TheCall, FDecl)) return ExprError(); // We know the result type of the call, set it. TheCall->setType(FuncT->getCallResultType(Context)); TheCall->setValueKind(Expr::getValueKindForType(FuncT->getReturnType())); if (Proto) { if (ConvertArgumentsForCall(TheCall, Fn, FDecl, Proto, Args, RParenLoc, IsExecConfig)) return ExprError(); } else { assert(isa(FuncT) && "Unknown FunctionType!"); if (FDecl) { // Check if we have too few/too many template arguments, based // on our knowledge of the function definition. const FunctionDecl *Def = nullptr; if (FDecl->hasBody(Def) && Args.size() != Def->param_size()) { Proto = Def->getType()->getAs(); if (!Proto || !(Proto->isVariadic() && Args.size() >= Def->param_size())) Diag(RParenLoc, diag::warn_call_wrong_number_of_arguments) << (Args.size() > Def->param_size()) << FDecl << Fn->getSourceRange(); } // If the function we're calling isn't a function prototype, but we have // a function prototype from a prior declaratiom, use that prototype. if (!FDecl->hasPrototype()) Proto = FDecl->getType()->getAs(); } // Promote the arguments (C99 6.5.2.2p6). for (unsigned i = 0, e = Args.size(); i != e; i++) { Expr *Arg = Args[i]; if (Proto && i < Proto->getNumParams()) { InitializedEntity Entity = InitializedEntity::InitializeParameter( Context, Proto->getParamType(i), Proto->isParamConsumed(i)); ExprResult ArgE = PerformCopyInitialization(Entity, SourceLocation(), Arg); if (ArgE.isInvalid()) return true; Arg = ArgE.getAs(); } else { ExprResult ArgE = DefaultArgumentPromotion(Arg); if (ArgE.isInvalid()) return true; Arg = ArgE.getAs(); } if (RequireCompleteType(Arg->getBeginLoc(), Arg->getType(), diag::err_call_incomplete_argument, Arg)) return ExprError(); TheCall->setArg(i, Arg); } } if (CXXMethodDecl *Method = dyn_cast_or_null(FDecl)) if (!Method->isStatic()) return ExprError(Diag(LParenLoc, diag::err_member_call_without_object) << Fn->getSourceRange()); // Check for sentinels if (NDecl) DiagnoseSentinelCalls(NDecl, LParenLoc, Args); // Warn for unions passing across security boundary (CMSE). if (FuncT != nullptr && FuncT->getCmseNSCallAttr()) { for (unsigned i = 0, e = Args.size(); i != e; i++) { if (const auto *RT = dyn_cast(Args[i]->getType().getCanonicalType())) { if (RT->getDecl()->isOrContainsUnion()) Diag(Args[i]->getBeginLoc(), diag::warn_cmse_nonsecure_union) << 0 << i; } } } // Do special checking on direct calls to functions. if (FDecl) { if (CheckFunctionCall(FDecl, TheCall, Proto)) return ExprError(); checkFortifiedBuiltinMemoryFunction(FDecl, TheCall); if (BuiltinID) return CheckBuiltinFunctionCall(FDecl, BuiltinID, TheCall); } else if (NDecl) { if (CheckPointerCall(NDecl, TheCall, Proto)) return ExprError(); } else { if (CheckOtherCall(TheCall, Proto)) return ExprError(); } return CheckForImmediateInvocation(MaybeBindToTemporary(TheCall), FDecl); } ExprResult Sema::ActOnCompoundLiteral(SourceLocation LParenLoc, ParsedType Ty, SourceLocation RParenLoc, Expr *InitExpr) { assert(Ty && "ActOnCompoundLiteral(): missing type"); assert(InitExpr && "ActOnCompoundLiteral(): missing expression"); TypeSourceInfo *TInfo; QualType literalType = GetTypeFromParser(Ty, &TInfo); if (!TInfo) TInfo = Context.getTrivialTypeSourceInfo(literalType); return BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, InitExpr); } ExprResult Sema::BuildCompoundLiteralExpr(SourceLocation LParenLoc, TypeSourceInfo *TInfo, SourceLocation RParenLoc, Expr *LiteralExpr) { QualType literalType = TInfo->getType(); if (literalType->isArrayType()) { if (RequireCompleteSizedType( LParenLoc, Context.getBaseElementType(literalType), diag::err_array_incomplete_or_sizeless_type, SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()))) return ExprError(); if (literalType->isVariableArrayType()) return ExprError(Diag(LParenLoc, diag::err_variable_object_no_init) << SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd())); } else if (!literalType->isDependentType() && RequireCompleteType(LParenLoc, literalType, diag::err_typecheck_decl_incomplete_type, SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()))) return ExprError(); InitializedEntity Entity = InitializedEntity::InitializeCompoundLiteralInit(TInfo); InitializationKind Kind = InitializationKind::CreateCStyleCast(LParenLoc, SourceRange(LParenLoc, RParenLoc), /*InitList=*/true); InitializationSequence InitSeq(*this, Entity, Kind, LiteralExpr); ExprResult Result = InitSeq.Perform(*this, Entity, Kind, LiteralExpr, &literalType); if (Result.isInvalid()) return ExprError(); LiteralExpr = Result.get(); bool isFileScope = !CurContext->isFunctionOrMethod(); // In C, compound literals are l-values for some reason. // For GCC compatibility, in C++, file-scope array compound literals with // constant initializers are also l-values, and compound literals are // otherwise prvalues. // // (GCC also treats C++ list-initialized file-scope array prvalues with // constant initializers as l-values, but that's non-conforming, so we don't // follow it there.) // // FIXME: It would be better to handle the lvalue cases as materializing and // lifetime-extending a temporary object, but our materialized temporaries // representation only supports lifetime extension from a variable, not "out // of thin air". // FIXME: For C++, we might want to instead lifetime-extend only if a pointer // is bound to the result of applying array-to-pointer decay to the compound // literal. // FIXME: GCC supports compound literals of reference type, which should // obviously have a value kind derived from the kind of reference involved. ExprValueKind VK = (getLangOpts().CPlusPlus && !(isFileScope && literalType->isArrayType())) ? VK_RValue : VK_LValue; if (isFileScope) if (auto ILE = dyn_cast(LiteralExpr)) for (unsigned i = 0, j = ILE->getNumInits(); i != j; i++) { Expr *Init = ILE->getInit(i); ILE->setInit(i, ConstantExpr::Create(Context, Init)); } auto *E = new (Context) CompoundLiteralExpr(LParenLoc, TInfo, literalType, VK, LiteralExpr, isFileScope); if (isFileScope) { if (!LiteralExpr->isTypeDependent() && !LiteralExpr->isValueDependent() && !literalType->isDependentType()) // C99 6.5.2.5p3 if (CheckForConstantInitializer(LiteralExpr, literalType)) return ExprError(); } else if (literalType.getAddressSpace() != LangAS::opencl_private && literalType.getAddressSpace() != LangAS::Default) { // Embedded-C extensions to C99 6.5.2.5: // "If the compound literal occurs inside the body of a function, the // type name shall not be qualified by an address-space qualifier." Diag(LParenLoc, diag::err_compound_literal_with_address_space) << SourceRange(LParenLoc, LiteralExpr->getSourceRange().getEnd()); return ExprError(); } if (!isFileScope && !getLangOpts().CPlusPlus) { // Compound literals that have automatic storage duration are destroyed at // the end of the scope in C; in C++, they're just temporaries. // Emit diagnostics if it is or contains a C union type that is non-trivial // to destruct. if (E->getType().hasNonTrivialToPrimitiveDestructCUnion()) checkNonTrivialCUnion(E->getType(), E->getExprLoc(), NTCUC_CompoundLiteral, NTCUK_Destruct); // Diagnose jumps that enter or exit the lifetime of the compound literal. if (literalType.isDestructedType()) { Cleanup.setExprNeedsCleanups(true); ExprCleanupObjects.push_back(E); getCurFunction()->setHasBranchProtectedScope(); } } if (E->getType().hasNonTrivialToPrimitiveDefaultInitializeCUnion() || E->getType().hasNonTrivialToPrimitiveCopyCUnion()) checkNonTrivialCUnionInInitializer(E->getInitializer(), E->getInitializer()->getExprLoc()); return MaybeBindToTemporary(E); } ExprResult Sema::ActOnInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, SourceLocation RBraceLoc) { // Only produce each kind of designated initialization diagnostic once. SourceLocation FirstDesignator; bool DiagnosedArrayDesignator = false; bool DiagnosedNestedDesignator = false; bool DiagnosedMixedDesignator = false; // Check that any designated initializers are syntactically valid in the // current language mode. for (unsigned I = 0, E = InitArgList.size(); I != E; ++I) { if (auto *DIE = dyn_cast(InitArgList[I])) { if (FirstDesignator.isInvalid()) FirstDesignator = DIE->getBeginLoc(); if (!getLangOpts().CPlusPlus) break; if (!DiagnosedNestedDesignator && DIE->size() > 1) { DiagnosedNestedDesignator = true; Diag(DIE->getBeginLoc(), diag::ext_designated_init_nested) << DIE->getDesignatorsSourceRange(); } for (auto &Desig : DIE->designators()) { if (!Desig.isFieldDesignator() && !DiagnosedArrayDesignator) { DiagnosedArrayDesignator = true; Diag(Desig.getBeginLoc(), diag::ext_designated_init_array) << Desig.getSourceRange(); } } if (!DiagnosedMixedDesignator && !isa(InitArgList[0])) { DiagnosedMixedDesignator = true; Diag(DIE->getBeginLoc(), diag::ext_designated_init_mixed) << DIE->getSourceRange(); Diag(InitArgList[0]->getBeginLoc(), diag::note_designated_init_mixed) << InitArgList[0]->getSourceRange(); } } else if (getLangOpts().CPlusPlus && !DiagnosedMixedDesignator && isa(InitArgList[0])) { DiagnosedMixedDesignator = true; auto *DIE = cast(InitArgList[0]); Diag(DIE->getBeginLoc(), diag::ext_designated_init_mixed) << DIE->getSourceRange(); Diag(InitArgList[I]->getBeginLoc(), diag::note_designated_init_mixed) << InitArgList[I]->getSourceRange(); } } if (FirstDesignator.isValid()) { // Only diagnose designated initiaization as a C++20 extension if we didn't // already diagnose use of (non-C++20) C99 designator syntax. if (getLangOpts().CPlusPlus && !DiagnosedArrayDesignator && !DiagnosedNestedDesignator && !DiagnosedMixedDesignator) { Diag(FirstDesignator, getLangOpts().CPlusPlus20 ? diag::warn_cxx17_compat_designated_init : diag::ext_cxx_designated_init); } else if (!getLangOpts().CPlusPlus && !getLangOpts().C99) { Diag(FirstDesignator, diag::ext_designated_init); } } return BuildInitList(LBraceLoc, InitArgList, RBraceLoc); } ExprResult Sema::BuildInitList(SourceLocation LBraceLoc, MultiExprArg InitArgList, SourceLocation RBraceLoc) { // Semantic analysis for initializers is done by ActOnDeclarator() and // CheckInitializer() - it requires knowledge of the object being initialized. // Immediately handle non-overload placeholders. Overloads can be // resolved contextually, but everything else here can't. for (unsigned I = 0, E = InitArgList.size(); I != E; ++I) { if (InitArgList[I]->getType()->isNonOverloadPlaceholderType()) { ExprResult result = CheckPlaceholderExpr(InitArgList[I]); // Ignore failures; dropping the entire initializer list because // of one failure would be terrible for indexing/etc. if (result.isInvalid()) continue; InitArgList[I] = result.get(); } } InitListExpr *E = new (Context) InitListExpr(Context, LBraceLoc, InitArgList, RBraceLoc); E->setType(Context.VoidTy); // FIXME: just a place holder for now. return E; } /// Do an explicit extend of the given block pointer if we're in ARC. void Sema::maybeExtendBlockObject(ExprResult &E) { assert(E.get()->getType()->isBlockPointerType()); assert(E.get()->isRValue()); // Only do this in an r-value context. if (!getLangOpts().ObjCAutoRefCount) return; E = ImplicitCastExpr::Create( Context, E.get()->getType(), CK_ARCExtendBlockObject, E.get(), /*base path*/ nullptr, VK_RValue, FPOptionsOverride()); Cleanup.setExprNeedsCleanups(true); } /// Prepare a conversion of the given expression to an ObjC object /// pointer type. CastKind Sema::PrepareCastToObjCObjectPointer(ExprResult &E) { QualType type = E.get()->getType(); if (type->isObjCObjectPointerType()) { return CK_BitCast; } else if (type->isBlockPointerType()) { maybeExtendBlockObject(E); return CK_BlockPointerToObjCPointerCast; } else { assert(type->isPointerType()); return CK_CPointerToObjCPointerCast; } } /// Prepares for a scalar cast, performing all the necessary stages /// except the final cast and returning the kind required. CastKind Sema::PrepareScalarCast(ExprResult &Src, QualType DestTy) { // Both Src and Dest are scalar types, i.e. arithmetic or pointer. // Also, callers should have filtered out the invalid cases with // pointers. Everything else should be possible. QualType SrcTy = Src.get()->getType(); if (Context.hasSameUnqualifiedType(SrcTy, DestTy)) return CK_NoOp; switch (Type::ScalarTypeKind SrcKind = SrcTy->getScalarTypeKind()) { case Type::STK_MemberPointer: llvm_unreachable("member pointer type in C"); case Type::STK_CPointer: case Type::STK_BlockPointer: case Type::STK_ObjCObjectPointer: switch (DestTy->getScalarTypeKind()) { case Type::STK_CPointer: { LangAS SrcAS = SrcTy->getPointeeType().getAddressSpace(); LangAS DestAS = DestTy->getPointeeType().getAddressSpace(); if (SrcAS != DestAS) return CK_AddressSpaceConversion; if (Context.hasCvrSimilarType(SrcTy, DestTy)) return CK_NoOp; return CK_BitCast; } case Type::STK_BlockPointer: return (SrcKind == Type::STK_BlockPointer ? CK_BitCast : CK_AnyPointerToBlockPointerCast); case Type::STK_ObjCObjectPointer: if (SrcKind == Type::STK_ObjCObjectPointer) return CK_BitCast; if (SrcKind == Type::STK_CPointer) return CK_CPointerToObjCPointerCast; maybeExtendBlockObject(Src); return CK_BlockPointerToObjCPointerCast; case Type::STK_Bool: return CK_PointerToBoolean; case Type::STK_Integral: return CK_PointerToIntegral; case Type::STK_Floating: case Type::STK_FloatingComplex: case Type::STK_IntegralComplex: case Type::STK_MemberPointer: case Type::STK_FixedPoint: llvm_unreachable("illegal cast from pointer"); } llvm_unreachable("Should have returned before this"); case Type::STK_FixedPoint: switch (DestTy->getScalarTypeKind()) { case Type::STK_FixedPoint: return CK_FixedPointCast; case Type::STK_Bool: return CK_FixedPointToBoolean; case Type::STK_Integral: return CK_FixedPointToIntegral; case Type::STK_Floating: return CK_FixedPointToFloating; case Type::STK_IntegralComplex: case Type::STK_FloatingComplex: Diag(Src.get()->getExprLoc(), diag::err_unimplemented_conversion_with_fixed_point_type) << DestTy; return CK_IntegralCast; case Type::STK_CPointer: case Type::STK_ObjCObjectPointer: case Type::STK_BlockPointer: case Type::STK_MemberPointer: llvm_unreachable("illegal cast to pointer type"); } llvm_unreachable("Should have returned before this"); case Type::STK_Bool: // casting from bool is like casting from an integer case Type::STK_Integral: switch (DestTy->getScalarTypeKind()) { case Type::STK_CPointer: case Type::STK_ObjCObjectPointer: case Type::STK_BlockPointer: if (Src.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull)) return CK_NullToPointer; return CK_IntegralToPointer; case Type::STK_Bool: return CK_IntegralToBoolean; case Type::STK_Integral: return CK_IntegralCast; case Type::STK_Floating: return CK_IntegralToFloating; case Type::STK_IntegralComplex: Src = ImpCastExprToType(Src.get(), DestTy->castAs()->getElementType(), CK_IntegralCast); return CK_IntegralRealToComplex; case Type::STK_FloatingComplex: Src = ImpCastExprToType(Src.get(), DestTy->castAs()->getElementType(), CK_IntegralToFloating); return CK_FloatingRealToComplex; case Type::STK_MemberPointer: llvm_unreachable("member pointer type in C"); case Type::STK_FixedPoint: return CK_IntegralToFixedPoint; } llvm_unreachable("Should have returned before this"); case Type::STK_Floating: switch (DestTy->getScalarTypeKind()) { case Type::STK_Floating: return CK_FloatingCast; case Type::STK_Bool: return CK_FloatingToBoolean; case Type::STK_Integral: return CK_FloatingToIntegral; case Type::STK_FloatingComplex: Src = ImpCastExprToType(Src.get(), DestTy->castAs()->getElementType(), CK_FloatingCast); return CK_FloatingRealToComplex; case Type::STK_IntegralComplex: Src = ImpCastExprToType(Src.get(), DestTy->castAs()->getElementType(), CK_FloatingToIntegral); return CK_IntegralRealToComplex; case Type::STK_CPointer: case Type::STK_ObjCObjectPointer: case Type::STK_BlockPointer: llvm_unreachable("valid float->pointer cast?"); case Type::STK_MemberPointer: llvm_unreachable("member pointer type in C"); case Type::STK_FixedPoint: return CK_FloatingToFixedPoint; } llvm_unreachable("Should have returned before this"); case Type::STK_FloatingComplex: switch (DestTy->getScalarTypeKind()) { case Type::STK_FloatingComplex: return CK_FloatingComplexCast; case Type::STK_IntegralComplex: return CK_FloatingComplexToIntegralComplex; case Type::STK_Floating: { QualType ET = SrcTy->castAs()->getElementType(); if (Context.hasSameType(ET, DestTy)) return CK_FloatingComplexToReal; Src = ImpCastExprToType(Src.get(), ET, CK_FloatingComplexToReal); return CK_FloatingCast; } case Type::STK_Bool: return CK_FloatingComplexToBoolean; case Type::STK_Integral: Src = ImpCastExprToType(Src.get(), SrcTy->castAs()->getElementType(), CK_FloatingComplexToReal); return CK_FloatingToIntegral; case Type::STK_CPointer: case Type::STK_ObjCObjectPointer: case Type::STK_BlockPointer: llvm_unreachable("valid complex float->pointer cast?"); case Type::STK_MemberPointer: llvm_unreachable("member pointer type in C"); case Type::STK_FixedPoint: Diag(Src.get()->getExprLoc(), diag::err_unimplemented_conversion_with_fixed_point_type) << SrcTy; return CK_IntegralCast; } llvm_unreachable("Should have returned before this"); case Type::STK_IntegralComplex: switch (DestTy->getScalarTypeKind()) { case Type::STK_FloatingComplex: return CK_IntegralComplexToFloatingComplex; case Type::STK_IntegralComplex: return CK_IntegralComplexCast; case Type::STK_Integral: { QualType ET = SrcTy->castAs()->getElementType(); if (Context.hasSameType(ET, DestTy)) return CK_IntegralComplexToReal; Src = ImpCastExprToType(Src.get(), ET, CK_IntegralComplexToReal); return CK_IntegralCast; } case Type::STK_Bool: return CK_IntegralComplexToBoolean; case Type::STK_Floating: Src = ImpCastExprToType(Src.get(), SrcTy->castAs()->getElementType(), CK_IntegralComplexToReal); return CK_IntegralToFloating; case Type::STK_CPointer: case Type::STK_ObjCObjectPointer: case Type::STK_BlockPointer: llvm_unreachable("valid complex int->pointer cast?"); case Type::STK_MemberPointer: llvm_unreachable("member pointer type in C"); case Type::STK_FixedPoint: Diag(Src.get()->getExprLoc(), diag::err_unimplemented_conversion_with_fixed_point_type) << SrcTy; return CK_IntegralCast; } llvm_unreachable("Should have returned before this"); } llvm_unreachable("Unhandled scalar cast"); } static bool breakDownVectorType(QualType type, uint64_t &len, QualType &eltType) { // Vectors are simple. if (const VectorType *vecType = type->getAs()) { len = vecType->getNumElements(); eltType = vecType->getElementType(); assert(eltType->isScalarType()); return true; } // We allow lax conversion to and from non-vector types, but only if // they're real types (i.e. non-complex, non-pointer scalar types). if (!type->isRealType()) return false; len = 1; eltType = type; return true; } /// Are the two types SVE-bitcast-compatible types? I.e. is bitcasting from the /// first SVE type (e.g. an SVE VLAT) to the second type (e.g. an SVE VLST) /// allowed? /// /// This will also return false if the two given types do not make sense from /// the perspective of SVE bitcasts. bool Sema::isValidSveBitcast(QualType srcTy, QualType destTy) { assert(srcTy->isVectorType() || destTy->isVectorType()); auto ValidScalableConversion = [](QualType FirstType, QualType SecondType) { if (!FirstType->isSizelessBuiltinType()) return false; const auto *VecTy = SecondType->getAs(); return VecTy && VecTy->getVectorKind() == VectorType::SveFixedLengthDataVector; }; return ValidScalableConversion(srcTy, destTy) || ValidScalableConversion(destTy, srcTy); } /// Are the two types lax-compatible vector types? That is, given /// that one of them is a vector, do they have equal storage sizes, /// where the storage size is the number of elements times the element /// size? /// /// This will also return false if either of the types is neither a /// vector nor a real type. bool Sema::areLaxCompatibleVectorTypes(QualType srcTy, QualType destTy) { assert(destTy->isVectorType() || srcTy->isVectorType()); // Disallow lax conversions between scalars and ExtVectors (these // conversions are allowed for other vector types because common headers // depend on them). Most scalar OP ExtVector cases are handled by the // splat path anyway, which does what we want (convert, not bitcast). // What this rules out for ExtVectors is crazy things like char4*float. if (srcTy->isScalarType() && destTy->isExtVectorType()) return false; if (destTy->isScalarType() && srcTy->isExtVectorType()) return false; uint64_t srcLen, destLen; QualType srcEltTy, destEltTy; if (!breakDownVectorType(srcTy, srcLen, srcEltTy)) return false; if (!breakDownVectorType(destTy, destLen, destEltTy)) return false; // ASTContext::getTypeSize will return the size rounded up to a // power of 2, so instead of using that, we need to use the raw // element size multiplied by the element count. uint64_t srcEltSize = Context.getTypeSize(srcEltTy); uint64_t destEltSize = Context.getTypeSize(destEltTy); return (srcLen * srcEltSize == destLen * destEltSize); } /// Is this a legal conversion between two types, one of which is /// known to be a vector type? bool Sema::isLaxVectorConversion(QualType srcTy, QualType destTy) { assert(destTy->isVectorType() || srcTy->isVectorType()); switch (Context.getLangOpts().getLaxVectorConversions()) { case LangOptions::LaxVectorConversionKind::None: return false; case LangOptions::LaxVectorConversionKind::Integer: if (!srcTy->isIntegralOrEnumerationType()) { auto *Vec = srcTy->getAs(); if (!Vec || !Vec->getElementType()->isIntegralOrEnumerationType()) return false; } if (!destTy->isIntegralOrEnumerationType()) { auto *Vec = destTy->getAs(); if (!Vec || !Vec->getElementType()->isIntegralOrEnumerationType()) return false; } // OK, integer (vector) -> integer (vector) bitcast. break; case LangOptions::LaxVectorConversionKind::All: break; } return areLaxCompatibleVectorTypes(srcTy, destTy); } bool Sema::CheckVectorCast(SourceRange R, QualType VectorTy, QualType Ty, CastKind &Kind) { assert(VectorTy->isVectorType() && "Not a vector type!"); if (Ty->isVectorType() || Ty->isIntegralType(Context)) { if (!areLaxCompatibleVectorTypes(Ty, VectorTy)) return Diag(R.getBegin(), Ty->isVectorType() ? diag::err_invalid_conversion_between_vectors : diag::err_invalid_conversion_between_vector_and_integer) << VectorTy << Ty << R; } else return Diag(R.getBegin(), diag::err_invalid_conversion_between_vector_and_scalar) << VectorTy << Ty << R; Kind = CK_BitCast; return false; } ExprResult Sema::prepareVectorSplat(QualType VectorTy, Expr *SplattedExpr) { QualType DestElemTy = VectorTy->castAs()->getElementType(); if (DestElemTy == SplattedExpr->getType()) return SplattedExpr; assert(DestElemTy->isFloatingType() || DestElemTy->isIntegralOrEnumerationType()); CastKind CK; if (VectorTy->isExtVectorType() && SplattedExpr->getType()->isBooleanType()) { // OpenCL requires that we convert `true` boolean expressions to -1, but // only when splatting vectors. if (DestElemTy->isFloatingType()) { // To avoid having to have a CK_BooleanToSignedFloating cast kind, we cast // in two steps: boolean to signed integral, then to floating. ExprResult CastExprRes = ImpCastExprToType(SplattedExpr, Context.IntTy, CK_BooleanToSignedIntegral); SplattedExpr = CastExprRes.get(); CK = CK_IntegralToFloating; } else { CK = CK_BooleanToSignedIntegral; } } else { ExprResult CastExprRes = SplattedExpr; CK = PrepareScalarCast(CastExprRes, DestElemTy); if (CastExprRes.isInvalid()) return ExprError(); SplattedExpr = CastExprRes.get(); } return ImpCastExprToType(SplattedExpr, DestElemTy, CK); } ExprResult Sema::CheckExtVectorCast(SourceRange R, QualType DestTy, Expr *CastExpr, CastKind &Kind) { assert(DestTy->isExtVectorType() && "Not an extended vector type!"); QualType SrcTy = CastExpr->getType(); // If SrcTy is a VectorType, the total size must match to explicitly cast to // an ExtVectorType. // In OpenCL, casts between vectors of different types are not allowed. // (See OpenCL 6.2). if (SrcTy->isVectorType()) { if (!areLaxCompatibleVectorTypes(SrcTy, DestTy) || (getLangOpts().OpenCL && !Context.hasSameUnqualifiedType(DestTy, SrcTy))) { Diag(R.getBegin(),diag::err_invalid_conversion_between_ext_vectors) << DestTy << SrcTy << R; return ExprError(); } Kind = CK_BitCast; return CastExpr; } // All non-pointer scalars can be cast to ExtVector type. The appropriate // conversion will take place first from scalar to elt type, and then // splat from elt type to vector. if (SrcTy->isPointerType()) return Diag(R.getBegin(), diag::err_invalid_conversion_between_vector_and_scalar) << DestTy << SrcTy << R; Kind = CK_VectorSplat; return prepareVectorSplat(DestTy, CastExpr); } ExprResult Sema::ActOnCastExpr(Scope *S, SourceLocation LParenLoc, Declarator &D, ParsedType &Ty, SourceLocation RParenLoc, Expr *CastExpr) { assert(!D.isInvalidType() && (CastExpr != nullptr) && "ActOnCastExpr(): missing type or expr"); TypeSourceInfo *castTInfo = GetTypeForDeclaratorCast(D, CastExpr->getType()); if (D.isInvalidType()) return ExprError(); if (getLangOpts().CPlusPlus) { // Check that there are no default arguments (C++ only). CheckExtraCXXDefaultArguments(D); } else { // Make sure any TypoExprs have been dealt with. ExprResult Res = CorrectDelayedTyposInExpr(CastExpr); if (!Res.isUsable()) return ExprError(); CastExpr = Res.get(); } checkUnusedDeclAttributes(D); QualType castType = castTInfo->getType(); Ty = CreateParsedType(castType, castTInfo); bool isVectorLiteral = false; // Check for an altivec or OpenCL literal, // i.e. all the elements are integer constants. ParenExpr *PE = dyn_cast(CastExpr); ParenListExpr *PLE = dyn_cast(CastExpr); if ((getLangOpts().AltiVec || getLangOpts().ZVector || getLangOpts().OpenCL) && castType->isVectorType() && (PE || PLE)) { if (PLE && PLE->getNumExprs() == 0) { Diag(PLE->getExprLoc(), diag::err_altivec_empty_initializer); return ExprError(); } if (PE || PLE->getNumExprs() == 1) { Expr *E = (PE ? PE->getSubExpr() : PLE->getExpr(0)); if (!E->isTypeDependent() && !E->getType()->isVectorType()) isVectorLiteral = true; } else isVectorLiteral = true; } // If this is a vector initializer, '(' type ')' '(' init, ..., init ')' // then handle it as such. if (isVectorLiteral) return BuildVectorLiteral(LParenLoc, RParenLoc, CastExpr, castTInfo); // If the Expr being casted is a ParenListExpr, handle it specially. // This is not an AltiVec-style cast, so turn the ParenListExpr into a // sequence of BinOp comma operators. if (isa(CastExpr)) { ExprResult Result = MaybeConvertParenListExprToParenExpr(S, CastExpr); if (Result.isInvalid()) return ExprError(); CastExpr = Result.get(); } if (getLangOpts().CPlusPlus && !castType->isVoidType() && !getSourceManager().isInSystemMacro(LParenLoc)) Diag(LParenLoc, diag::warn_old_style_cast) << CastExpr->getSourceRange(); CheckTollFreeBridgeCast(castType, CastExpr); CheckObjCBridgeRelatedCast(castType, CastExpr); DiscardMisalignedMemberAddress(castType.getTypePtr(), CastExpr); return BuildCStyleCastExpr(LParenLoc, castTInfo, RParenLoc, CastExpr); } ExprResult Sema::BuildVectorLiteral(SourceLocation LParenLoc, SourceLocation RParenLoc, Expr *E, TypeSourceInfo *TInfo) { assert((isa(E) || isa(E)) && "Expected paren or paren list expression"); Expr **exprs; unsigned numExprs; Expr *subExpr; SourceLocation LiteralLParenLoc, LiteralRParenLoc; if (ParenListExpr *PE = dyn_cast(E)) { LiteralLParenLoc = PE->getLParenLoc(); LiteralRParenLoc = PE->getRParenLoc(); exprs = PE->getExprs(); numExprs = PE->getNumExprs(); } else { // isa by assertion at function entrance LiteralLParenLoc = cast(E)->getLParen(); LiteralRParenLoc = cast(E)->getRParen(); subExpr = cast(E)->getSubExpr(); exprs = &subExpr; numExprs = 1; } QualType Ty = TInfo->getType(); assert(Ty->isVectorType() && "Expected vector type"); SmallVector initExprs; const VectorType *VTy = Ty->castAs(); unsigned numElems = VTy->getNumElements(); // '(...)' form of vector initialization in AltiVec: the number of // initializers must be one or must match the size of the vector. // If a single value is specified in the initializer then it will be // replicated to all the components of the vector if (VTy->getVectorKind() == VectorType::AltiVecVector) { // The number of initializers must be one or must match the size of the // vector. If a single value is specified in the initializer then it will // be replicated to all the components of the vector if (numExprs == 1) { QualType ElemTy = VTy->getElementType(); ExprResult Literal = DefaultLvalueConversion(exprs[0]); if (Literal.isInvalid()) return ExprError(); Literal = ImpCastExprToType(Literal.get(), ElemTy, PrepareScalarCast(Literal, ElemTy)); return BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, Literal.get()); } else if (numExprs < numElems) { Diag(E->getExprLoc(), diag::err_incorrect_number_of_vector_initializers); return ExprError(); } else initExprs.append(exprs, exprs + numExprs); } else { // For OpenCL, when the number of initializers is a single value, // it will be replicated to all components of the vector. if (getLangOpts().OpenCL && VTy->getVectorKind() == VectorType::GenericVector && numExprs == 1) { QualType ElemTy = VTy->getElementType(); ExprResult Literal = DefaultLvalueConversion(exprs[0]); if (Literal.isInvalid()) return ExprError(); Literal = ImpCastExprToType(Literal.get(), ElemTy, PrepareScalarCast(Literal, ElemTy)); return BuildCStyleCastExpr(LParenLoc, TInfo, RParenLoc, Literal.get()); } initExprs.append(exprs, exprs + numExprs); } // FIXME: This means that pretty-printing the final AST will produce curly // braces instead of the original commas. InitListExpr *initE = new (Context) InitListExpr(Context, LiteralLParenLoc, initExprs, LiteralRParenLoc); initE->setType(Ty); return BuildCompoundLiteralExpr(LParenLoc, TInfo, RParenLoc, initE); } /// This is not an AltiVec-style cast or or C++ direct-initialization, so turn /// the ParenListExpr into a sequence of comma binary operators. ExprResult Sema::MaybeConvertParenListExprToParenExpr(Scope *S, Expr *OrigExpr) { ParenListExpr *E = dyn_cast(OrigExpr); if (!E) return OrigExpr; ExprResult Result(E->getExpr(0)); for (unsigned i = 1, e = E->getNumExprs(); i != e && !Result.isInvalid(); ++i) Result = ActOnBinOp(S, E->getExprLoc(), tok::comma, Result.get(), E->getExpr(i)); if (Result.isInvalid()) return ExprError(); return ActOnParenExpr(E->getLParenLoc(), E->getRParenLoc(), Result.get()); } ExprResult Sema::ActOnParenListExpr(SourceLocation L, SourceLocation R, MultiExprArg Val) { return ParenListExpr::Create(Context, L, Val, R); } /// Emit a specialized diagnostic when one expression is a null pointer /// constant and the other is not a pointer. Returns true if a diagnostic is /// emitted. bool Sema::DiagnoseConditionalForNull(Expr *LHSExpr, Expr *RHSExpr, SourceLocation QuestionLoc) { Expr *NullExpr = LHSExpr; Expr *NonPointerExpr = RHSExpr; Expr::NullPointerConstantKind NullKind = NullExpr->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNotNull); if (NullKind == Expr::NPCK_NotNull) { NullExpr = RHSExpr; NonPointerExpr = LHSExpr; NullKind = NullExpr->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNotNull); } if (NullKind == Expr::NPCK_NotNull) return false; if (NullKind == Expr::NPCK_ZeroExpression) return false; if (NullKind == Expr::NPCK_ZeroLiteral) { // In this case, check to make sure that we got here from a "NULL" // string in the source code. NullExpr = NullExpr->IgnoreParenImpCasts(); SourceLocation loc = NullExpr->getExprLoc(); if (!findMacroSpelling(loc, "NULL")) return false; } int DiagType = (NullKind == Expr::NPCK_CXX11_nullptr); Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands_null) << NonPointerExpr->getType() << DiagType << NonPointerExpr->getSourceRange(); return true; } /// Return false if the condition expression is valid, true otherwise. static bool checkCondition(Sema &S, Expr *Cond, SourceLocation QuestionLoc) { QualType CondTy = Cond->getType(); // OpenCL v1.1 s6.3.i says the condition cannot be a floating point type. if (S.getLangOpts().OpenCL && CondTy->isFloatingType()) { S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_nonfloat) << CondTy << Cond->getSourceRange(); return true; } // C99 6.5.15p2 if (CondTy->isScalarType()) return false; S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_scalar) << CondTy << Cond->getSourceRange(); return true; } /// Handle when one or both operands are void type. static QualType checkConditionalVoidType(Sema &S, ExprResult &LHS, ExprResult &RHS) { Expr *LHSExpr = LHS.get(); Expr *RHSExpr = RHS.get(); if (!LHSExpr->getType()->isVoidType()) S.Diag(RHSExpr->getBeginLoc(), diag::ext_typecheck_cond_one_void) << RHSExpr->getSourceRange(); if (!RHSExpr->getType()->isVoidType()) S.Diag(LHSExpr->getBeginLoc(), diag::ext_typecheck_cond_one_void) << LHSExpr->getSourceRange(); LHS = S.ImpCastExprToType(LHS.get(), S.Context.VoidTy, CK_ToVoid); RHS = S.ImpCastExprToType(RHS.get(), S.Context.VoidTy, CK_ToVoid); return S.Context.VoidTy; } /// Return false if the NullExpr can be promoted to PointerTy, /// true otherwise. static bool checkConditionalNullPointer(Sema &S, ExprResult &NullExpr, QualType PointerTy) { if ((!PointerTy->isAnyPointerType() && !PointerTy->isBlockPointerType()) || !NullExpr.get()->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNull)) return true; NullExpr = S.ImpCastExprToType(NullExpr.get(), PointerTy, CK_NullToPointer); return false; } /// Checks compatibility between two pointers and return the resulting /// type. static QualType checkConditionalPointerCompatibility(Sema &S, ExprResult &LHS, ExprResult &RHS, SourceLocation Loc) { QualType LHSTy = LHS.get()->getType(); QualType RHSTy = RHS.get()->getType(); if (S.Context.hasSameType(LHSTy, RHSTy)) { // Two identical pointers types are always compatible. return LHSTy; } QualType lhptee, rhptee; // Get the pointee types. bool IsBlockPointer = false; if (const BlockPointerType *LHSBTy = LHSTy->getAs()) { lhptee = LHSBTy->getPointeeType(); rhptee = RHSTy->castAs()->getPointeeType(); IsBlockPointer = true; } else { lhptee = LHSTy->castAs()->getPointeeType(); rhptee = RHSTy->castAs()->getPointeeType(); } // C99 6.5.15p6: If both operands are pointers to compatible types or to // differently qualified versions of compatible types, the result type is // a pointer to an appropriately qualified version of the composite // type. // Only CVR-qualifiers exist in the standard, and the differently-qualified // clause doesn't make sense for our extensions. E.g. address space 2 should // be incompatible with address space 3: they may live on different devices or // anything. Qualifiers lhQual = lhptee.getQualifiers(); Qualifiers rhQual = rhptee.getQualifiers(); LangAS ResultAddrSpace = LangAS::Default; LangAS LAddrSpace = lhQual.getAddressSpace(); LangAS RAddrSpace = rhQual.getAddressSpace(); // OpenCL v1.1 s6.5 - Conversion between pointers to distinct address // spaces is disallowed. if (lhQual.isAddressSpaceSupersetOf(rhQual)) ResultAddrSpace = LAddrSpace; else if (rhQual.isAddressSpaceSupersetOf(lhQual)) ResultAddrSpace = RAddrSpace; else { S.Diag(Loc, diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) << LHSTy << RHSTy << 2 << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } unsigned MergedCVRQual = lhQual.getCVRQualifiers() | rhQual.getCVRQualifiers(); auto LHSCastKind = CK_BitCast, RHSCastKind = CK_BitCast; lhQual.removeCVRQualifiers(); rhQual.removeCVRQualifiers(); // OpenCL v2.0 specification doesn't extend compatibility of type qualifiers // (C99 6.7.3) for address spaces. We assume that the check should behave in // the same manner as it's defined for CVR qualifiers, so for OpenCL two // qual types are compatible iff // * corresponded types are compatible // * CVR qualifiers are equal // * address spaces are equal // Thus for conditional operator we merge CVR and address space unqualified // pointees and if there is a composite type we return a pointer to it with // merged qualifiers. LHSCastKind = LAddrSpace == ResultAddrSpace ? CK_BitCast : CK_AddressSpaceConversion; RHSCastKind = RAddrSpace == ResultAddrSpace ? CK_BitCast : CK_AddressSpaceConversion; lhQual.removeAddressSpace(); rhQual.removeAddressSpace(); lhptee = S.Context.getQualifiedType(lhptee.getUnqualifiedType(), lhQual); rhptee = S.Context.getQualifiedType(rhptee.getUnqualifiedType(), rhQual); QualType CompositeTy = S.Context.mergeTypes(lhptee, rhptee); if (CompositeTy.isNull()) { // In this situation, we assume void* type. No especially good // reason, but this is what gcc does, and we do have to pick // to get a consistent AST. QualType incompatTy; incompatTy = S.Context.getPointerType( S.Context.getAddrSpaceQualType(S.Context.VoidTy, ResultAddrSpace)); LHS = S.ImpCastExprToType(LHS.get(), incompatTy, LHSCastKind); RHS = S.ImpCastExprToType(RHS.get(), incompatTy, RHSCastKind); // FIXME: For OpenCL the warning emission and cast to void* leaves a room // for casts between types with incompatible address space qualifiers. // For the following code the compiler produces casts between global and // local address spaces of the corresponded innermost pointees: // local int *global *a; // global int *global *b; // a = (0 ? a : b); // see C99 6.5.16.1.p1. S.Diag(Loc, diag::ext_typecheck_cond_incompatible_pointers) << LHSTy << RHSTy << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return incompatTy; } // The pointer types are compatible. // In case of OpenCL ResultTy should have the address space qualifier // which is a superset of address spaces of both the 2nd and the 3rd // operands of the conditional operator. QualType ResultTy = [&, ResultAddrSpace]() { if (S.getLangOpts().OpenCL) { Qualifiers CompositeQuals = CompositeTy.getQualifiers(); CompositeQuals.setAddressSpace(ResultAddrSpace); return S.Context .getQualifiedType(CompositeTy.getUnqualifiedType(), CompositeQuals) .withCVRQualifiers(MergedCVRQual); } return CompositeTy.withCVRQualifiers(MergedCVRQual); }(); if (IsBlockPointer) ResultTy = S.Context.getBlockPointerType(ResultTy); else ResultTy = S.Context.getPointerType(ResultTy); LHS = S.ImpCastExprToType(LHS.get(), ResultTy, LHSCastKind); RHS = S.ImpCastExprToType(RHS.get(), ResultTy, RHSCastKind); return ResultTy; } /// Return the resulting type when the operands are both block pointers. static QualType checkConditionalBlockPointerCompatibility(Sema &S, ExprResult &LHS, ExprResult &RHS, SourceLocation Loc) { QualType LHSTy = LHS.get()->getType(); QualType RHSTy = RHS.get()->getType(); if (!LHSTy->isBlockPointerType() || !RHSTy->isBlockPointerType()) { if (LHSTy->isVoidPointerType() || RHSTy->isVoidPointerType()) { QualType destType = S.Context.getPointerType(S.Context.VoidTy); LHS = S.ImpCastExprToType(LHS.get(), destType, CK_BitCast); RHS = S.ImpCastExprToType(RHS.get(), destType, CK_BitCast); return destType; } S.Diag(Loc, diag::err_typecheck_cond_incompatible_operands) << LHSTy << RHSTy << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } // We have 2 block pointer types. return checkConditionalPointerCompatibility(S, LHS, RHS, Loc); } /// Return the resulting type when the operands are both pointers. static QualType checkConditionalObjectPointersCompatibility(Sema &S, ExprResult &LHS, ExprResult &RHS, SourceLocation Loc) { // get the pointer types QualType LHSTy = LHS.get()->getType(); QualType RHSTy = RHS.get()->getType(); // get the "pointed to" types QualType lhptee = LHSTy->castAs()->getPointeeType(); QualType rhptee = RHSTy->castAs()->getPointeeType(); // ignore qualifiers on void (C99 6.5.15p3, clause 6) if (lhptee->isVoidType() && rhptee->isIncompleteOrObjectType()) { // Figure out necessary qualifiers (C99 6.5.15p6) QualType destPointee = S.Context.getQualifiedType(lhptee, rhptee.getQualifiers()); QualType destType = S.Context.getPointerType(destPointee); // Add qualifiers if necessary. LHS = S.ImpCastExprToType(LHS.get(), destType, CK_NoOp); // Promote to void*. RHS = S.ImpCastExprToType(RHS.get(), destType, CK_BitCast); return destType; } if (rhptee->isVoidType() && lhptee->isIncompleteOrObjectType()) { QualType destPointee = S.Context.getQualifiedType(rhptee, lhptee.getQualifiers()); QualType destType = S.Context.getPointerType(destPointee); // Add qualifiers if necessary. RHS = S.ImpCastExprToType(RHS.get(), destType, CK_NoOp); // Promote to void*. LHS = S.ImpCastExprToType(LHS.get(), destType, CK_BitCast); return destType; } return checkConditionalPointerCompatibility(S, LHS, RHS, Loc); } /// Return false if the first expression is not an integer and the second /// expression is not a pointer, true otherwise. static bool checkPointerIntegerMismatch(Sema &S, ExprResult &Int, Expr* PointerExpr, SourceLocation Loc, bool IsIntFirstExpr) { if (!PointerExpr->getType()->isPointerType() || !Int.get()->getType()->isIntegerType()) return false; Expr *Expr1 = IsIntFirstExpr ? Int.get() : PointerExpr; Expr *Expr2 = IsIntFirstExpr ? PointerExpr : Int.get(); S.Diag(Loc, diag::ext_typecheck_cond_pointer_integer_mismatch) << Expr1->getType() << Expr2->getType() << Expr1->getSourceRange() << Expr2->getSourceRange(); Int = S.ImpCastExprToType(Int.get(), PointerExpr->getType(), CK_IntegralToPointer); return true; } /// Simple conversion between integer and floating point types. /// /// Used when handling the OpenCL conditional operator where the /// condition is a vector while the other operands are scalar. /// /// OpenCL v1.1 s6.3.i and s6.11.6 together require that the scalar /// types are either integer or floating type. Between the two /// operands, the type with the higher rank is defined as the "result /// type". The other operand needs to be promoted to the same type. No /// other type promotion is allowed. We cannot use /// UsualArithmeticConversions() for this purpose, since it always /// promotes promotable types. static QualType OpenCLArithmeticConversions(Sema &S, ExprResult &LHS, ExprResult &RHS, SourceLocation QuestionLoc) { LHS = S.DefaultFunctionArrayLvalueConversion(LHS.get()); if (LHS.isInvalid()) return QualType(); RHS = S.DefaultFunctionArrayLvalueConversion(RHS.get()); if (RHS.isInvalid()) return QualType(); // For conversion purposes, we ignore any qualifiers. // For example, "const float" and "float" are equivalent. QualType LHSType = S.Context.getCanonicalType(LHS.get()->getType()).getUnqualifiedType(); QualType RHSType = S.Context.getCanonicalType(RHS.get()->getType()).getUnqualifiedType(); if (!LHSType->isIntegerType() && !LHSType->isRealFloatingType()) { S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_int_float) << LHSType << LHS.get()->getSourceRange(); return QualType(); } if (!RHSType->isIntegerType() && !RHSType->isRealFloatingType()) { S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_int_float) << RHSType << RHS.get()->getSourceRange(); return QualType(); } // If both types are identical, no conversion is needed. if (LHSType == RHSType) return LHSType; // Now handle "real" floating types (i.e. float, double, long double). if (LHSType->isRealFloatingType() || RHSType->isRealFloatingType()) return handleFloatConversion(S, LHS, RHS, LHSType, RHSType, /*IsCompAssign = */ false); // Finally, we have two differing integer types. return handleIntegerConversion (S, LHS, RHS, LHSType, RHSType, /*IsCompAssign = */ false); } /// Convert scalar operands to a vector that matches the /// condition in length. /// /// Used when handling the OpenCL conditional operator where the /// condition is a vector while the other operands are scalar. /// /// We first compute the "result type" for the scalar operands /// according to OpenCL v1.1 s6.3.i. Both operands are then converted /// into a vector of that type where the length matches the condition /// vector type. s6.11.6 requires that the element types of the result /// and the condition must have the same number of bits. static QualType OpenCLConvertScalarsToVectors(Sema &S, ExprResult &LHS, ExprResult &RHS, QualType CondTy, SourceLocation QuestionLoc) { QualType ResTy = OpenCLArithmeticConversions(S, LHS, RHS, QuestionLoc); if (ResTy.isNull()) return QualType(); const VectorType *CV = CondTy->getAs(); assert(CV); // Determine the vector result type unsigned NumElements = CV->getNumElements(); QualType VectorTy = S.Context.getExtVectorType(ResTy, NumElements); // Ensure that all types have the same number of bits if (S.Context.getTypeSize(CV->getElementType()) != S.Context.getTypeSize(ResTy)) { // Since VectorTy is created internally, it does not pretty print // with an OpenCL name. Instead, we just print a description. std::string EleTyName = ResTy.getUnqualifiedType().getAsString(); SmallString<64> Str; llvm::raw_svector_ostream OS(Str); OS << "(vector of " << NumElements << " '" << EleTyName << "' values)"; S.Diag(QuestionLoc, diag::err_conditional_vector_element_size) << CondTy << OS.str(); return QualType(); } // Convert operands to the vector result type LHS = S.ImpCastExprToType(LHS.get(), VectorTy, CK_VectorSplat); RHS = S.ImpCastExprToType(RHS.get(), VectorTy, CK_VectorSplat); return VectorTy; } /// Return false if this is a valid OpenCL condition vector static bool checkOpenCLConditionVector(Sema &S, Expr *Cond, SourceLocation QuestionLoc) { // OpenCL v1.1 s6.11.6 says the elements of the vector must be of // integral type. const VectorType *CondTy = Cond->getType()->getAs(); assert(CondTy); QualType EleTy = CondTy->getElementType(); if (EleTy->isIntegerType()) return false; S.Diag(QuestionLoc, diag::err_typecheck_cond_expect_nonfloat) << Cond->getType() << Cond->getSourceRange(); return true; } /// Return false if the vector condition type and the vector /// result type are compatible. /// /// OpenCL v1.1 s6.11.6 requires that both vector types have the same /// number of elements, and their element types have the same number /// of bits. static bool checkVectorResult(Sema &S, QualType CondTy, QualType VecResTy, SourceLocation QuestionLoc) { const VectorType *CV = CondTy->getAs(); const VectorType *RV = VecResTy->getAs(); assert(CV && RV); if (CV->getNumElements() != RV->getNumElements()) { S.Diag(QuestionLoc, diag::err_conditional_vector_size) << CondTy << VecResTy; return true; } QualType CVE = CV->getElementType(); QualType RVE = RV->getElementType(); if (S.Context.getTypeSize(CVE) != S.Context.getTypeSize(RVE)) { S.Diag(QuestionLoc, diag::err_conditional_vector_element_size) << CondTy << VecResTy; return true; } return false; } /// Return the resulting type for the conditional operator in /// OpenCL (aka "ternary selection operator", OpenCL v1.1 /// s6.3.i) when the condition is a vector type. static QualType OpenCLCheckVectorConditional(Sema &S, ExprResult &Cond, ExprResult &LHS, ExprResult &RHS, SourceLocation QuestionLoc) { Cond = S.DefaultFunctionArrayLvalueConversion(Cond.get()); if (Cond.isInvalid()) return QualType(); QualType CondTy = Cond.get()->getType(); if (checkOpenCLConditionVector(S, Cond.get(), QuestionLoc)) return QualType(); // If either operand is a vector then find the vector type of the // result as specified in OpenCL v1.1 s6.3.i. if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) { QualType VecResTy = S.CheckVectorOperands(LHS, RHS, QuestionLoc, /*isCompAssign*/false, /*AllowBothBool*/true, /*AllowBoolConversions*/false); if (VecResTy.isNull()) return QualType(); // The result type must match the condition type as specified in // OpenCL v1.1 s6.11.6. if (checkVectorResult(S, CondTy, VecResTy, QuestionLoc)) return QualType(); return VecResTy; } // Both operands are scalar. return OpenCLConvertScalarsToVectors(S, LHS, RHS, CondTy, QuestionLoc); } /// Return true if the Expr is block type static bool checkBlockType(Sema &S, const Expr *E) { if (const CallExpr *CE = dyn_cast(E)) { QualType Ty = CE->getCallee()->getType(); if (Ty->isBlockPointerType()) { S.Diag(E->getExprLoc(), diag::err_opencl_ternary_with_block); return true; } } return false; } /// Note that LHS is not null here, even if this is the gnu "x ?: y" extension. /// In that case, LHS = cond. /// C99 6.5.15 QualType Sema::CheckConditionalOperands(ExprResult &Cond, ExprResult &LHS, ExprResult &RHS, ExprValueKind &VK, ExprObjectKind &OK, SourceLocation QuestionLoc) { ExprResult LHSResult = CheckPlaceholderExpr(LHS.get()); if (!LHSResult.isUsable()) return QualType(); LHS = LHSResult; ExprResult RHSResult = CheckPlaceholderExpr(RHS.get()); if (!RHSResult.isUsable()) return QualType(); RHS = RHSResult; // C++ is sufficiently different to merit its own checker. if (getLangOpts().CPlusPlus) return CXXCheckConditionalOperands(Cond, LHS, RHS, VK, OK, QuestionLoc); VK = VK_RValue; OK = OK_Ordinary; if (Context.isDependenceAllowed() && (Cond.get()->isTypeDependent() || LHS.get()->isTypeDependent() || RHS.get()->isTypeDependent())) { assert(!getLangOpts().CPlusPlus); assert((Cond.get()->containsErrors() || LHS.get()->containsErrors() || RHS.get()->containsErrors()) && "should only occur in error-recovery path."); return Context.DependentTy; } // The OpenCL operator with a vector condition is sufficiently // different to merit its own checker. if ((getLangOpts().OpenCL && Cond.get()->getType()->isVectorType()) || Cond.get()->getType()->isExtVectorType()) return OpenCLCheckVectorConditional(*this, Cond, LHS, RHS, QuestionLoc); // First, check the condition. Cond = UsualUnaryConversions(Cond.get()); if (Cond.isInvalid()) return QualType(); if (checkCondition(*this, Cond.get(), QuestionLoc)) return QualType(); // Now check the two expressions. if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) return CheckVectorOperands(LHS, RHS, QuestionLoc, /*isCompAssign*/false, /*AllowBothBool*/true, /*AllowBoolConversions*/false); QualType ResTy = UsualArithmeticConversions(LHS, RHS, QuestionLoc, ACK_Conditional); if (LHS.isInvalid() || RHS.isInvalid()) return QualType(); QualType LHSTy = LHS.get()->getType(); QualType RHSTy = RHS.get()->getType(); // Diagnose attempts to convert between __float128 and long double where // such conversions currently can't be handled. if (unsupportedTypeConversion(*this, LHSTy, RHSTy)) { Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) << LHSTy << RHSTy << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } // OpenCL v2.0 s6.12.5 - Blocks cannot be used as expressions of the ternary // selection operator (?:). if (getLangOpts().OpenCL && (checkBlockType(*this, LHS.get()) | checkBlockType(*this, RHS.get()))) { return QualType(); } // If both operands have arithmetic type, do the usual arithmetic conversions // to find a common type: C99 6.5.15p3,5. if (LHSTy->isArithmeticType() && RHSTy->isArithmeticType()) { // Disallow invalid arithmetic conversions, such as those between ExtInts of // different sizes, or between ExtInts and other types. if (ResTy.isNull() && (LHSTy->isExtIntType() || RHSTy->isExtIntType())) { Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) << LHSTy << RHSTy << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } LHS = ImpCastExprToType(LHS.get(), ResTy, PrepareScalarCast(LHS, ResTy)); RHS = ImpCastExprToType(RHS.get(), ResTy, PrepareScalarCast(RHS, ResTy)); return ResTy; } // And if they're both bfloat (which isn't arithmetic), that's fine too. if (LHSTy->isBFloat16Type() && RHSTy->isBFloat16Type()) { return LHSTy; } // If both operands are the same structure or union type, the result is that // type. if (const RecordType *LHSRT = LHSTy->getAs()) { // C99 6.5.15p3 if (const RecordType *RHSRT = RHSTy->getAs()) if (LHSRT->getDecl() == RHSRT->getDecl()) // "If both the operands have structure or union type, the result has // that type." This implies that CV qualifiers are dropped. return LHSTy.getUnqualifiedType(); // FIXME: Type of conditional expression must be complete in C mode. } // C99 6.5.15p5: "If both operands have void type, the result has void type." // The following || allows only one side to be void (a GCC-ism). if (LHSTy->isVoidType() || RHSTy->isVoidType()) { return checkConditionalVoidType(*this, LHS, RHS); } // C99 6.5.15p6 - "if one operand is a null pointer constant, the result has // the type of the other operand." if (!checkConditionalNullPointer(*this, RHS, LHSTy)) return LHSTy; if (!checkConditionalNullPointer(*this, LHS, RHSTy)) return RHSTy; // All objective-c pointer type analysis is done here. QualType compositeType = FindCompositeObjCPointerType(LHS, RHS, QuestionLoc); if (LHS.isInvalid() || RHS.isInvalid()) return QualType(); if (!compositeType.isNull()) return compositeType; // Handle block pointer types. if (LHSTy->isBlockPointerType() || RHSTy->isBlockPointerType()) return checkConditionalBlockPointerCompatibility(*this, LHS, RHS, QuestionLoc); // Check constraints for C object pointers types (C99 6.5.15p3,6). if (LHSTy->isPointerType() && RHSTy->isPointerType()) return checkConditionalObjectPointersCompatibility(*this, LHS, RHS, QuestionLoc); // GCC compatibility: soften pointer/integer mismatch. Note that // null pointers have been filtered out by this point. if (checkPointerIntegerMismatch(*this, LHS, RHS.get(), QuestionLoc, /*IsIntFirstExpr=*/true)) return RHSTy; if (checkPointerIntegerMismatch(*this, RHS, LHS.get(), QuestionLoc, /*IsIntFirstExpr=*/false)) return LHSTy; // Allow ?: operations in which both operands have the same // built-in sizeless type. if (LHSTy->isSizelessBuiltinType() && LHSTy == RHSTy) return LHSTy; // Emit a better diagnostic if one of the expressions is a null pointer // constant and the other is not a pointer type. In this case, the user most // likely forgot to take the address of the other expression. if (DiagnoseConditionalForNull(LHS.get(), RHS.get(), QuestionLoc)) return QualType(); // Otherwise, the operands are not compatible. Diag(QuestionLoc, diag::err_typecheck_cond_incompatible_operands) << LHSTy << RHSTy << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } /// FindCompositeObjCPointerType - Helper method to find composite type of /// two objective-c pointer types of the two input expressions. QualType Sema::FindCompositeObjCPointerType(ExprResult &LHS, ExprResult &RHS, SourceLocation QuestionLoc) { QualType LHSTy = LHS.get()->getType(); QualType RHSTy = RHS.get()->getType(); // Handle things like Class and struct objc_class*. Here we case the result // to the pseudo-builtin, because that will be implicitly cast back to the // redefinition type if an attempt is made to access its fields. if (LHSTy->isObjCClassType() && (Context.hasSameType(RHSTy, Context.getObjCClassRedefinitionType()))) { RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_CPointerToObjCPointerCast); return LHSTy; } if (RHSTy->isObjCClassType() && (Context.hasSameType(LHSTy, Context.getObjCClassRedefinitionType()))) { LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_CPointerToObjCPointerCast); return RHSTy; } // And the same for struct objc_object* / id if (LHSTy->isObjCIdType() && (Context.hasSameType(RHSTy, Context.getObjCIdRedefinitionType()))) { RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_CPointerToObjCPointerCast); return LHSTy; } if (RHSTy->isObjCIdType() && (Context.hasSameType(LHSTy, Context.getObjCIdRedefinitionType()))) { LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_CPointerToObjCPointerCast); return RHSTy; } // And the same for struct objc_selector* / SEL if (Context.isObjCSelType(LHSTy) && (Context.hasSameType(RHSTy, Context.getObjCSelRedefinitionType()))) { RHS = ImpCastExprToType(RHS.get(), LHSTy, CK_BitCast); return LHSTy; } if (Context.isObjCSelType(RHSTy) && (Context.hasSameType(LHSTy, Context.getObjCSelRedefinitionType()))) { LHS = ImpCastExprToType(LHS.get(), RHSTy, CK_BitCast); return RHSTy; } // Check constraints for Objective-C object pointers types. if (LHSTy->isObjCObjectPointerType() && RHSTy->isObjCObjectPointerType()) { if (Context.getCanonicalType(LHSTy) == Context.getCanonicalType(RHSTy)) { // Two identical object pointer types are always compatible. return LHSTy; } const ObjCObjectPointerType *LHSOPT = LHSTy->castAs(); const ObjCObjectPointerType *RHSOPT = RHSTy->castAs(); QualType compositeType = LHSTy; // If both operands are interfaces and either operand can be // assigned to the other, use that type as the composite // type. This allows // xxx ? (A*) a : (B*) b // where B is a subclass of A. // // Additionally, as for assignment, if either type is 'id' // allow silent coercion. Finally, if the types are // incompatible then make sure to use 'id' as the composite // type so the result is acceptable for sending messages to. // FIXME: Consider unifying with 'areComparableObjCPointerTypes'. // It could return the composite type. if (!(compositeType = Context.areCommonBaseCompatible(LHSOPT, RHSOPT)).isNull()) { // Nothing more to do. } else if (Context.canAssignObjCInterfaces(LHSOPT, RHSOPT)) { compositeType = RHSOPT->isObjCBuiltinType() ? RHSTy : LHSTy; } else if (Context.canAssignObjCInterfaces(RHSOPT, LHSOPT)) { compositeType = LHSOPT->isObjCBuiltinType() ? LHSTy : RHSTy; } else if ((LHSOPT->isObjCQualifiedIdType() || RHSOPT->isObjCQualifiedIdType()) && Context.ObjCQualifiedIdTypesAreCompatible(LHSOPT, RHSOPT, true)) { // Need to handle "id" explicitly. // GCC allows qualified id and any Objective-C type to devolve to // id. Currently localizing to here until clear this should be // part of ObjCQualifiedIdTypesAreCompatible. compositeType = Context.getObjCIdType(); } else if (LHSTy->isObjCIdType() || RHSTy->isObjCIdType()) { compositeType = Context.getObjCIdType(); } else { Diag(QuestionLoc, diag::ext_typecheck_cond_incompatible_operands) << LHSTy << RHSTy << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); QualType incompatTy = Context.getObjCIdType(); LHS = ImpCastExprToType(LHS.get(), incompatTy, CK_BitCast); RHS = ImpCastExprToType(RHS.get(), incompatTy, CK_BitCast); return incompatTy; } // The object pointer types are compatible. LHS = ImpCastExprToType(LHS.get(), compositeType, CK_BitCast); RHS = ImpCastExprToType(RHS.get(), compositeType, CK_BitCast); return compositeType; } // Check Objective-C object pointer types and 'void *' if (LHSTy->isVoidPointerType() && RHSTy->isObjCObjectPointerType()) { if (getLangOpts().ObjCAutoRefCount) { // ARC forbids the implicit conversion of object pointers to 'void *', // so these types are not compatible. Diag(QuestionLoc, diag::err_cond_voidptr_arc) << LHSTy << RHSTy << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); LHS = RHS = true; return QualType(); } QualType lhptee = LHSTy->castAs()->getPointeeType(); QualType rhptee = RHSTy->castAs()->getPointeeType(); QualType destPointee = Context.getQualifiedType(lhptee, rhptee.getQualifiers()); QualType destType = Context.getPointerType(destPointee); // Add qualifiers if necessary. LHS = ImpCastExprToType(LHS.get(), destType, CK_NoOp); // Promote to void*. RHS = ImpCastExprToType(RHS.get(), destType, CK_BitCast); return destType; } if (LHSTy->isObjCObjectPointerType() && RHSTy->isVoidPointerType()) { if (getLangOpts().ObjCAutoRefCount) { // ARC forbids the implicit conversion of object pointers to 'void *', // so these types are not compatible. Diag(QuestionLoc, diag::err_cond_voidptr_arc) << LHSTy << RHSTy << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); LHS = RHS = true; return QualType(); } QualType lhptee = LHSTy->castAs()->getPointeeType(); QualType rhptee = RHSTy->castAs()->getPointeeType(); QualType destPointee = Context.getQualifiedType(rhptee, lhptee.getQualifiers()); QualType destType = Context.getPointerType(destPointee); // Add qualifiers if necessary. RHS = ImpCastExprToType(RHS.get(), destType, CK_NoOp); // Promote to void*. LHS = ImpCastExprToType(LHS.get(), destType, CK_BitCast); return destType; } return QualType(); } /// SuggestParentheses - Emit a note with a fixit hint that wraps /// ParenRange in parentheses. static void SuggestParentheses(Sema &Self, SourceLocation Loc, const PartialDiagnostic &Note, SourceRange ParenRange) { SourceLocation EndLoc = Self.getLocForEndOfToken(ParenRange.getEnd()); if (ParenRange.getBegin().isFileID() && ParenRange.getEnd().isFileID() && EndLoc.isValid()) { Self.Diag(Loc, Note) << FixItHint::CreateInsertion(ParenRange.getBegin(), "(") << FixItHint::CreateInsertion(EndLoc, ")"); } else { // We can't display the parentheses, so just show the bare note. Self.Diag(Loc, Note) << ParenRange; } } static bool IsArithmeticOp(BinaryOperatorKind Opc) { return BinaryOperator::isAdditiveOp(Opc) || BinaryOperator::isMultiplicativeOp(Opc) || BinaryOperator::isShiftOp(Opc) || Opc == BO_And || Opc == BO_Or; // This only checks for bitwise-or and bitwise-and, but not bitwise-xor and // not any of the logical operators. Bitwise-xor is commonly used as a // logical-xor because there is no logical-xor operator. The logical // operators, including uses of xor, have a high false positive rate for // precedence warnings. } /// IsArithmeticBinaryExpr - Returns true if E is an arithmetic binary /// expression, either using a built-in or overloaded operator, /// and sets *OpCode to the opcode and *RHSExprs to the right-hand side /// expression. static bool IsArithmeticBinaryExpr(Expr *E, BinaryOperatorKind *Opcode, Expr **RHSExprs) { // Don't strip parenthesis: we should not warn if E is in parenthesis. E = E->IgnoreImpCasts(); E = E->IgnoreConversionOperatorSingleStep(); E = E->IgnoreImpCasts(); if (auto *MTE = dyn_cast(E)) { E = MTE->getSubExpr(); E = E->IgnoreImpCasts(); } // Built-in binary operator. if (BinaryOperator *OP = dyn_cast(E)) { if (IsArithmeticOp(OP->getOpcode())) { *Opcode = OP->getOpcode(); *RHSExprs = OP->getRHS(); return true; } } // Overloaded operator. if (CXXOperatorCallExpr *Call = dyn_cast(E)) { if (Call->getNumArgs() != 2) return false; // Make sure this is really a binary operator that is safe to pass into // BinaryOperator::getOverloadedOpcode(), e.g. it's not a subscript op. OverloadedOperatorKind OO = Call->getOperator(); if (OO < OO_Plus || OO > OO_Arrow || OO == OO_PlusPlus || OO == OO_MinusMinus) return false; BinaryOperatorKind OpKind = BinaryOperator::getOverloadedOpcode(OO); if (IsArithmeticOp(OpKind)) { *Opcode = OpKind; *RHSExprs = Call->getArg(1); return true; } } return false; } /// ExprLooksBoolean - Returns true if E looks boolean, i.e. it has boolean type /// or is a logical expression such as (x==y) which has int type, but is /// commonly interpreted as boolean. static bool ExprLooksBoolean(Expr *E) { E = E->IgnoreParenImpCasts(); if (E->getType()->isBooleanType()) return true; if (BinaryOperator *OP = dyn_cast(E)) return OP->isComparisonOp() || OP->isLogicalOp(); if (UnaryOperator *OP = dyn_cast(E)) return OP->getOpcode() == UO_LNot; if (E->getType()->isPointerType()) return true; // FIXME: What about overloaded operator calls returning "unspecified boolean // type"s (commonly pointer-to-members)? return false; } /// DiagnoseConditionalPrecedence - Emit a warning when a conditional operator /// and binary operator are mixed in a way that suggests the programmer assumed /// the conditional operator has higher precedence, for example: /// "int x = a + someBinaryCondition ? 1 : 2". static void DiagnoseConditionalPrecedence(Sema &Self, SourceLocation OpLoc, Expr *Condition, Expr *LHSExpr, Expr *RHSExpr) { BinaryOperatorKind CondOpcode; Expr *CondRHS; if (!IsArithmeticBinaryExpr(Condition, &CondOpcode, &CondRHS)) return; if (!ExprLooksBoolean(CondRHS)) return; // The condition is an arithmetic binary expression, with a right- // hand side that looks boolean, so warn. unsigned DiagID = BinaryOperator::isBitwiseOp(CondOpcode) ? diag::warn_precedence_bitwise_conditional : diag::warn_precedence_conditional; Self.Diag(OpLoc, DiagID) << Condition->getSourceRange() << BinaryOperator::getOpcodeStr(CondOpcode); SuggestParentheses( Self, OpLoc, Self.PDiag(diag::note_precedence_silence) << BinaryOperator::getOpcodeStr(CondOpcode), SourceRange(Condition->getBeginLoc(), Condition->getEndLoc())); SuggestParentheses(Self, OpLoc, Self.PDiag(diag::note_precedence_conditional_first), SourceRange(CondRHS->getBeginLoc(), RHSExpr->getEndLoc())); } /// Compute the nullability of a conditional expression. static QualType computeConditionalNullability(QualType ResTy, bool IsBin, QualType LHSTy, QualType RHSTy, ASTContext &Ctx) { if (!ResTy->isAnyPointerType()) return ResTy; auto GetNullability = [&Ctx](QualType Ty) { Optional Kind = Ty->getNullability(Ctx); if (Kind) { // For our purposes, treat _Nullable_result as _Nullable. if (*Kind == NullabilityKind::NullableResult) return NullabilityKind::Nullable; return *Kind; } return NullabilityKind::Unspecified; }; auto LHSKind = GetNullability(LHSTy), RHSKind = GetNullability(RHSTy); NullabilityKind MergedKind; // Compute nullability of a binary conditional expression. if (IsBin) { if (LHSKind == NullabilityKind::NonNull) MergedKind = NullabilityKind::NonNull; else MergedKind = RHSKind; // Compute nullability of a normal conditional expression. } else { if (LHSKind == NullabilityKind::Nullable || RHSKind == NullabilityKind::Nullable) MergedKind = NullabilityKind::Nullable; else if (LHSKind == NullabilityKind::NonNull) MergedKind = RHSKind; else if (RHSKind == NullabilityKind::NonNull) MergedKind = LHSKind; else MergedKind = NullabilityKind::Unspecified; } // Return if ResTy already has the correct nullability. if (GetNullability(ResTy) == MergedKind) return ResTy; // Strip all nullability from ResTy. while (ResTy->getNullability(Ctx)) ResTy = ResTy.getSingleStepDesugaredType(Ctx); // Create a new AttributedType with the new nullability kind. auto NewAttr = AttributedType::getNullabilityAttrKind(MergedKind); return Ctx.getAttributedType(NewAttr, ResTy, ResTy); } /// ActOnConditionalOp - Parse a ?: operation. Note that 'LHS' may be null /// in the case of a the GNU conditional expr extension. ExprResult Sema::ActOnConditionalOp(SourceLocation QuestionLoc, SourceLocation ColonLoc, Expr *CondExpr, Expr *LHSExpr, Expr *RHSExpr) { if (!Context.isDependenceAllowed()) { // C cannot handle TypoExpr nodes in the condition because it // doesn't handle dependent types properly, so make sure any TypoExprs have // been dealt with before checking the operands. ExprResult CondResult = CorrectDelayedTyposInExpr(CondExpr); ExprResult LHSResult = CorrectDelayedTyposInExpr(LHSExpr); ExprResult RHSResult = CorrectDelayedTyposInExpr(RHSExpr); if (!CondResult.isUsable()) return ExprError(); if (LHSExpr) { if (!LHSResult.isUsable()) return ExprError(); } if (!RHSResult.isUsable()) return ExprError(); CondExpr = CondResult.get(); LHSExpr = LHSResult.get(); RHSExpr = RHSResult.get(); } // If this is the gnu "x ?: y" extension, analyze the types as though the LHS // was the condition. OpaqueValueExpr *opaqueValue = nullptr; Expr *commonExpr = nullptr; if (!LHSExpr) { commonExpr = CondExpr; // Lower out placeholder types first. This is important so that we don't // try to capture a placeholder. This happens in few cases in C++; such // as Objective-C++'s dictionary subscripting syntax. if (commonExpr->hasPlaceholderType()) { ExprResult result = CheckPlaceholderExpr(commonExpr); if (!result.isUsable()) return ExprError(); commonExpr = result.get(); } // We usually want to apply unary conversions *before* saving, except // in the special case of a C++ l-value conditional. if (!(getLangOpts().CPlusPlus && !commonExpr->isTypeDependent() && commonExpr->getValueKind() == RHSExpr->getValueKind() && commonExpr->isGLValue() && commonExpr->isOrdinaryOrBitFieldObject() && RHSExpr->isOrdinaryOrBitFieldObject() && Context.hasSameType(commonExpr->getType(), RHSExpr->getType()))) { ExprResult commonRes = UsualUnaryConversions(commonExpr); if (commonRes.isInvalid()) return ExprError(); commonExpr = commonRes.get(); } // If the common expression is a class or array prvalue, materialize it // so that we can safely refer to it multiple times. if (commonExpr->isRValue() && (commonExpr->getType()->isRecordType() || commonExpr->getType()->isArrayType())) { ExprResult MatExpr = TemporaryMaterializationConversion(commonExpr); if (MatExpr.isInvalid()) return ExprError(); commonExpr = MatExpr.get(); } opaqueValue = new (Context) OpaqueValueExpr(commonExpr->getExprLoc(), commonExpr->getType(), commonExpr->getValueKind(), commonExpr->getObjectKind(), commonExpr); LHSExpr = CondExpr = opaqueValue; } QualType LHSTy = LHSExpr->getType(), RHSTy = RHSExpr->getType(); ExprValueKind VK = VK_RValue; ExprObjectKind OK = OK_Ordinary; ExprResult Cond = CondExpr, LHS = LHSExpr, RHS = RHSExpr; QualType result = CheckConditionalOperands(Cond, LHS, RHS, VK, OK, QuestionLoc); if (result.isNull() || Cond.isInvalid() || LHS.isInvalid() || RHS.isInvalid()) return ExprError(); DiagnoseConditionalPrecedence(*this, QuestionLoc, Cond.get(), LHS.get(), RHS.get()); CheckBoolLikeConversion(Cond.get(), QuestionLoc); result = computeConditionalNullability(result, commonExpr, LHSTy, RHSTy, Context); if (!commonExpr) return new (Context) ConditionalOperator(Cond.get(), QuestionLoc, LHS.get(), ColonLoc, RHS.get(), result, VK, OK); return new (Context) BinaryConditionalOperator( commonExpr, opaqueValue, Cond.get(), LHS.get(), RHS.get(), QuestionLoc, ColonLoc, result, VK, OK); } // Check if we have a conversion between incompatible cmse function pointer // types, that is, a conversion between a function pointer with the // cmse_nonsecure_call attribute and one without. static bool IsInvalidCmseNSCallConversion(Sema &S, QualType FromType, QualType ToType) { if (const auto *ToFn = dyn_cast(S.Context.getCanonicalType(ToType))) { if (const auto *FromFn = dyn_cast(S.Context.getCanonicalType(FromType))) { FunctionType::ExtInfo ToEInfo = ToFn->getExtInfo(); FunctionType::ExtInfo FromEInfo = FromFn->getExtInfo(); return ToEInfo.getCmseNSCall() != FromEInfo.getCmseNSCall(); } } return false; } // checkPointerTypesForAssignment - This is a very tricky routine (despite // being closely modeled after the C99 spec:-). The odd characteristic of this // routine is it effectively iqnores the qualifiers on the top level pointee. // This circumvents the usual type rules specified in 6.2.7p1 & 6.7.5.[1-3]. // FIXME: add a couple examples in this comment. static Sema::AssignConvertType checkPointerTypesForAssignment(Sema &S, QualType LHSType, QualType RHSType) { assert(LHSType.isCanonical() && "LHS not canonicalized!"); assert(RHSType.isCanonical() && "RHS not canonicalized!"); // get the "pointed to" type (ignoring qualifiers at the top level) const Type *lhptee, *rhptee; Qualifiers lhq, rhq; std::tie(lhptee, lhq) = cast(LHSType)->getPointeeType().split().asPair(); std::tie(rhptee, rhq) = cast(RHSType)->getPointeeType().split().asPair(); Sema::AssignConvertType ConvTy = Sema::Compatible; // C99 6.5.16.1p1: This following citation is common to constraints // 3 & 4 (below). ...and the type *pointed to* by the left has all the // qualifiers of the type *pointed to* by the right; // As a special case, 'non-__weak A *' -> 'non-__weak const *' is okay. if (lhq.getObjCLifetime() != rhq.getObjCLifetime() && lhq.compatiblyIncludesObjCLifetime(rhq)) { // Ignore lifetime for further calculation. lhq.removeObjCLifetime(); rhq.removeObjCLifetime(); } if (!lhq.compatiblyIncludes(rhq)) { // Treat address-space mismatches as fatal. if (!lhq.isAddressSpaceSupersetOf(rhq)) return Sema::IncompatiblePointerDiscardsQualifiers; // It's okay to add or remove GC or lifetime qualifiers when converting to // and from void*. else if (lhq.withoutObjCGCAttr().withoutObjCLifetime() .compatiblyIncludes( rhq.withoutObjCGCAttr().withoutObjCLifetime()) && (lhptee->isVoidType() || rhptee->isVoidType())) ; // keep old // Treat lifetime mismatches as fatal. else if (lhq.getObjCLifetime() != rhq.getObjCLifetime()) ConvTy = Sema::IncompatiblePointerDiscardsQualifiers; // For GCC/MS compatibility, other qualifier mismatches are treated // as still compatible in C. else ConvTy = Sema::CompatiblePointerDiscardsQualifiers; } // C99 6.5.16.1p1 (constraint 4): If one operand is a pointer to an object or // incomplete type and the other is a pointer to a qualified or unqualified // version of void... if (lhptee->isVoidType()) { if (rhptee->isIncompleteOrObjectType()) return ConvTy; // As an extension, we allow cast to/from void* to function pointer. assert(rhptee->isFunctionType()); return Sema::FunctionVoidPointer; } if (rhptee->isVoidType()) { if (lhptee->isIncompleteOrObjectType()) return ConvTy; // As an extension, we allow cast to/from void* to function pointer. assert(lhptee->isFunctionType()); return Sema::FunctionVoidPointer; } // C99 6.5.16.1p1 (constraint 3): both operands are pointers to qualified or // unqualified versions of compatible types, ... QualType ltrans = QualType(lhptee, 0), rtrans = QualType(rhptee, 0); if (!S.Context.typesAreCompatible(ltrans, rtrans)) { // Check if the pointee types are compatible ignoring the sign. // We explicitly check for char so that we catch "char" vs // "unsigned char" on systems where "char" is unsigned. if (lhptee->isCharType()) ltrans = S.Context.UnsignedCharTy; else if (lhptee->hasSignedIntegerRepresentation()) ltrans = S.Context.getCorrespondingUnsignedType(ltrans); if (rhptee->isCharType()) rtrans = S.Context.UnsignedCharTy; else if (rhptee->hasSignedIntegerRepresentation()) rtrans = S.Context.getCorrespondingUnsignedType(rtrans); if (ltrans == rtrans) { // Types are compatible ignoring the sign. Qualifier incompatibility // takes priority over sign incompatibility because the sign // warning can be disabled. if (ConvTy != Sema::Compatible) return ConvTy; return Sema::IncompatiblePointerSign; } // If we are a multi-level pointer, it's possible that our issue is simply // one of qualification - e.g. char ** -> const char ** is not allowed. If // the eventual target type is the same and the pointers have the same // level of indirection, this must be the issue. if (isa(lhptee) && isa(rhptee)) { do { std::tie(lhptee, lhq) = cast(lhptee)->getPointeeType().split().asPair(); std::tie(rhptee, rhq) = cast(rhptee)->getPointeeType().split().asPair(); // Inconsistent address spaces at this point is invalid, even if the // address spaces would be compatible. // FIXME: This doesn't catch address space mismatches for pointers of // different nesting levels, like: // __local int *** a; // int ** b = a; // It's not clear how to actually determine when such pointers are // invalidly incompatible. if (lhq.getAddressSpace() != rhq.getAddressSpace()) return Sema::IncompatibleNestedPointerAddressSpaceMismatch; } while (isa(lhptee) && isa(rhptee)); if (lhptee == rhptee) return Sema::IncompatibleNestedPointerQualifiers; } // General pointer incompatibility takes priority over qualifiers. if (RHSType->isFunctionPointerType() && LHSType->isFunctionPointerType()) return Sema::IncompatibleFunctionPointer; return Sema::IncompatiblePointer; } if (!S.getLangOpts().CPlusPlus && S.IsFunctionConversion(ltrans, rtrans, ltrans)) return Sema::IncompatibleFunctionPointer; if (IsInvalidCmseNSCallConversion(S, ltrans, rtrans)) return Sema::IncompatibleFunctionPointer; return ConvTy; } /// checkBlockPointerTypesForAssignment - This routine determines whether two /// block pointer types are compatible or whether a block and normal pointer /// are compatible. It is more restrict than comparing two function pointer // types. static Sema::AssignConvertType checkBlockPointerTypesForAssignment(Sema &S, QualType LHSType, QualType RHSType) { assert(LHSType.isCanonical() && "LHS not canonicalized!"); assert(RHSType.isCanonical() && "RHS not canonicalized!"); QualType lhptee, rhptee; // get the "pointed to" type (ignoring qualifiers at the top level) lhptee = cast(LHSType)->getPointeeType(); rhptee = cast(RHSType)->getPointeeType(); // In C++, the types have to match exactly. if (S.getLangOpts().CPlusPlus) return Sema::IncompatibleBlockPointer; Sema::AssignConvertType ConvTy = Sema::Compatible; // For blocks we enforce that qualifiers are identical. Qualifiers LQuals = lhptee.getLocalQualifiers(); Qualifiers RQuals = rhptee.getLocalQualifiers(); if (S.getLangOpts().OpenCL) { LQuals.removeAddressSpace(); RQuals.removeAddressSpace(); } if (LQuals != RQuals) ConvTy = Sema::CompatiblePointerDiscardsQualifiers; // FIXME: OpenCL doesn't define the exact compile time semantics for a block // assignment. // The current behavior is similar to C++ lambdas. A block might be // assigned to a variable iff its return type and parameters are compatible // (C99 6.2.7) with the corresponding return type and parameters of the LHS of // an assignment. Presumably it should behave in way that a function pointer // assignment does in C, so for each parameter and return type: // * CVR and address space of LHS should be a superset of CVR and address // space of RHS. // * unqualified types should be compatible. if (S.getLangOpts().OpenCL) { if (!S.Context.typesAreBlockPointerCompatible( S.Context.getQualifiedType(LHSType.getUnqualifiedType(), LQuals), S.Context.getQualifiedType(RHSType.getUnqualifiedType(), RQuals))) return Sema::IncompatibleBlockPointer; } else if (!S.Context.typesAreBlockPointerCompatible(LHSType, RHSType)) return Sema::IncompatibleBlockPointer; return ConvTy; } /// checkObjCPointerTypesForAssignment - Compares two objective-c pointer types /// for assignment compatibility. static Sema::AssignConvertType checkObjCPointerTypesForAssignment(Sema &S, QualType LHSType, QualType RHSType) { assert(LHSType.isCanonical() && "LHS was not canonicalized!"); assert(RHSType.isCanonical() && "RHS was not canonicalized!"); if (LHSType->isObjCBuiltinType()) { // Class is not compatible with ObjC object pointers. if (LHSType->isObjCClassType() && !RHSType->isObjCBuiltinType() && !RHSType->isObjCQualifiedClassType()) return Sema::IncompatiblePointer; return Sema::Compatible; } if (RHSType->isObjCBuiltinType()) { if (RHSType->isObjCClassType() && !LHSType->isObjCBuiltinType() && !LHSType->isObjCQualifiedClassType()) return Sema::IncompatiblePointer; return Sema::Compatible; } QualType lhptee = LHSType->castAs()->getPointeeType(); QualType rhptee = RHSType->castAs()->getPointeeType(); if (!lhptee.isAtLeastAsQualifiedAs(rhptee) && // make an exception for id

!LHSType->isObjCQualifiedIdType()) return Sema::CompatiblePointerDiscardsQualifiers; if (S.Context.typesAreCompatible(LHSType, RHSType)) return Sema::Compatible; if (LHSType->isObjCQualifiedIdType() || RHSType->isObjCQualifiedIdType()) return Sema::IncompatibleObjCQualifiedId; return Sema::IncompatiblePointer; } Sema::AssignConvertType Sema::CheckAssignmentConstraints(SourceLocation Loc, QualType LHSType, QualType RHSType) { // Fake up an opaque expression. We don't actually care about what // cast operations are required, so if CheckAssignmentConstraints // adds casts to this they'll be wasted, but fortunately that doesn't // usually happen on valid code. OpaqueValueExpr RHSExpr(Loc, RHSType, VK_RValue); ExprResult RHSPtr = &RHSExpr; CastKind K; return CheckAssignmentConstraints(LHSType, RHSPtr, K, /*ConvertRHS=*/false); } /// This helper function returns true if QT is a vector type that has element /// type ElementType. static bool isVector(QualType QT, QualType ElementType) { if (const VectorType *VT = QT->getAs()) return VT->getElementType().getCanonicalType() == ElementType; return false; } /// CheckAssignmentConstraints (C99 6.5.16) - This routine currently /// has code to accommodate several GCC extensions when type checking /// pointers. Here are some objectionable examples that GCC considers warnings: /// /// int a, *pint; /// short *pshort; /// struct foo *pfoo; /// /// pint = pshort; // warning: assignment from incompatible pointer type /// a = pint; // warning: assignment makes integer from pointer without a cast /// pint = a; // warning: assignment makes pointer from integer without a cast /// pint = pfoo; // warning: assignment from incompatible pointer type /// /// As a result, the code for dealing with pointers is more complex than the /// C99 spec dictates. /// /// Sets 'Kind' for any result kind except Incompatible. Sema::AssignConvertType Sema::CheckAssignmentConstraints(QualType LHSType, ExprResult &RHS, CastKind &Kind, bool ConvertRHS) { QualType RHSType = RHS.get()->getType(); QualType OrigLHSType = LHSType; // Get canonical types. We're not formatting these types, just comparing // them. LHSType = Context.getCanonicalType(LHSType).getUnqualifiedType(); RHSType = Context.getCanonicalType(RHSType).getUnqualifiedType(); // Common case: no conversion required. if (LHSType == RHSType) { Kind = CK_NoOp; return Compatible; } // If we have an atomic type, try a non-atomic assignment, then just add an // atomic qualification step. if (const AtomicType *AtomicTy = dyn_cast(LHSType)) { Sema::AssignConvertType result = CheckAssignmentConstraints(AtomicTy->getValueType(), RHS, Kind); if (result != Compatible) return result; if (Kind != CK_NoOp && ConvertRHS) RHS = ImpCastExprToType(RHS.get(), AtomicTy->getValueType(), Kind); Kind = CK_NonAtomicToAtomic; return Compatible; } // If the left-hand side is a reference type, then we are in a // (rare!) case where we've allowed the use of references in C, // e.g., as a parameter type in a built-in function. In this case, // just make sure that the type referenced is compatible with the // right-hand side type. The caller is responsible for adjusting // LHSType so that the resulting expression does not have reference // type. if (const ReferenceType *LHSTypeRef = LHSType->getAs()) { if (Context.typesAreCompatible(LHSTypeRef->getPointeeType(), RHSType)) { Kind = CK_LValueBitCast; return Compatible; } return Incompatible; } // Allow scalar to ExtVector assignments, and assignments of an ExtVector type // to the same ExtVector type. if (LHSType->isExtVectorType()) { if (RHSType->isExtVectorType()) return Incompatible; if (RHSType->isArithmeticType()) { // CK_VectorSplat does T -> vector T, so first cast to the element type. if (ConvertRHS) RHS = prepareVectorSplat(LHSType, RHS.get()); Kind = CK_VectorSplat; return Compatible; } } // Conversions to or from vector type. if (LHSType->isVectorType() || RHSType->isVectorType()) { if (LHSType->isVectorType() && RHSType->isVectorType()) { // Allow assignments of an AltiVec vector type to an equivalent GCC // vector type and vice versa if (Context.areCompatibleVectorTypes(LHSType, RHSType)) { Kind = CK_BitCast; return Compatible; } // If we are allowing lax vector conversions, and LHS and RHS are both // vectors, the total size only needs to be the same. This is a bitcast; // no bits are changed but the result type is different. if (isLaxVectorConversion(RHSType, LHSType)) { Kind = CK_BitCast; return IncompatibleVectors; } } // When the RHS comes from another lax conversion (e.g. binops between // scalars and vectors) the result is canonicalized as a vector. When the // LHS is also a vector, the lax is allowed by the condition above. Handle // the case where LHS is a scalar. if (LHSType->isScalarType()) { const VectorType *VecType = RHSType->getAs(); if (VecType && VecType->getNumElements() == 1 && isLaxVectorConversion(RHSType, LHSType)) { ExprResult *VecExpr = &RHS; *VecExpr = ImpCastExprToType(VecExpr->get(), LHSType, CK_BitCast); Kind = CK_BitCast; return Compatible; } } // Allow assignments between fixed-length and sizeless SVE vectors. if ((LHSType->isSizelessBuiltinType() && RHSType->isVectorType()) || (LHSType->isVectorType() && RHSType->isSizelessBuiltinType())) if (Context.areCompatibleSveTypes(LHSType, RHSType) || Context.areLaxCompatibleSveTypes(LHSType, RHSType)) { Kind = CK_BitCast; return Compatible; } return Incompatible; } // Diagnose attempts to convert between __float128 and long double where // such conversions currently can't be handled. if (unsupportedTypeConversion(*this, LHSType, RHSType)) return Incompatible; // Disallow assigning a _Complex to a real type in C++ mode since it simply // discards the imaginary part. if (getLangOpts().CPlusPlus && RHSType->getAs() && !LHSType->getAs()) return Incompatible; // Arithmetic conversions. if (LHSType->isArithmeticType() && RHSType->isArithmeticType() && !(getLangOpts().CPlusPlus && LHSType->isEnumeralType())) { if (ConvertRHS) Kind = PrepareScalarCast(RHS, LHSType); return Compatible; } // Conversions to normal pointers. if (const PointerType *LHSPointer = dyn_cast(LHSType)) { // U* -> T* if (isa(RHSType)) { LangAS AddrSpaceL = LHSPointer->getPointeeType().getAddressSpace(); LangAS AddrSpaceR = RHSType->getPointeeType().getAddressSpace(); if (AddrSpaceL != AddrSpaceR) Kind = CK_AddressSpaceConversion; else if (Context.hasCvrSimilarType(RHSType, LHSType)) Kind = CK_NoOp; else Kind = CK_BitCast; return checkPointerTypesForAssignment(*this, LHSType, RHSType); } // int -> T* if (RHSType->isIntegerType()) { Kind = CK_IntegralToPointer; // FIXME: null? return IntToPointer; } // C pointers are not compatible with ObjC object pointers, // with two exceptions: if (isa(RHSType)) { // - conversions to void* if (LHSPointer->getPointeeType()->isVoidType()) { Kind = CK_BitCast; return Compatible; } // - conversions from 'Class' to the redefinition type if (RHSType->isObjCClassType() && Context.hasSameType(LHSType, Context.getObjCClassRedefinitionType())) { Kind = CK_BitCast; return Compatible; } Kind = CK_BitCast; return IncompatiblePointer; } // U^ -> void* if (RHSType->getAs()) { if (LHSPointer->getPointeeType()->isVoidType()) { LangAS AddrSpaceL = LHSPointer->getPointeeType().getAddressSpace(); LangAS AddrSpaceR = RHSType->getAs() ->getPointeeType() .getAddressSpace(); Kind = AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion : CK_BitCast; return Compatible; } } return Incompatible; } // Conversions to block pointers. if (isa(LHSType)) { // U^ -> T^ if (RHSType->isBlockPointerType()) { LangAS AddrSpaceL = LHSType->getAs() ->getPointeeType() .getAddressSpace(); LangAS AddrSpaceR = RHSType->getAs() ->getPointeeType() .getAddressSpace(); Kind = AddrSpaceL != AddrSpaceR ? CK_AddressSpaceConversion : CK_BitCast; return checkBlockPointerTypesForAssignment(*this, LHSType, RHSType); } // int or null -> T^ if (RHSType->isIntegerType()) { Kind = CK_IntegralToPointer; // FIXME: null return IntToBlockPointer; } // id -> T^ if (getLangOpts().ObjC && RHSType->isObjCIdType()) { Kind = CK_AnyPointerToBlockPointerCast; return Compatible; } // void* -> T^ if (const PointerType *RHSPT = RHSType->getAs()) if (RHSPT->getPointeeType()->isVoidType()) { Kind = CK_AnyPointerToBlockPointerCast; return Compatible; } return Incompatible; } // Conversions to Objective-C pointers. if (isa(LHSType)) { // A* -> B* if (RHSType->isObjCObjectPointerType()) { Kind = CK_BitCast; Sema::AssignConvertType result = checkObjCPointerTypesForAssignment(*this, LHSType, RHSType); if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && result == Compatible && !CheckObjCARCUnavailableWeakConversion(OrigLHSType, RHSType)) result = IncompatibleObjCWeakRef; return result; } // int or null -> A* if (RHSType->isIntegerType()) { Kind = CK_IntegralToPointer; // FIXME: null return IntToPointer; } // In general, C pointers are not compatible with ObjC object pointers, // with two exceptions: if (isa(RHSType)) { Kind = CK_CPointerToObjCPointerCast; // - conversions from 'void*' if (RHSType->isVoidPointerType()) { return Compatible; } // - conversions to 'Class' from its redefinition type if (LHSType->isObjCClassType() && Context.hasSameType(RHSType, Context.getObjCClassRedefinitionType())) { return Compatible; } return IncompatiblePointer; } // Only under strict condition T^ is compatible with an Objective-C pointer. if (RHSType->isBlockPointerType() && LHSType->isBlockCompatibleObjCPointerType(Context)) { if (ConvertRHS) maybeExtendBlockObject(RHS); Kind = CK_BlockPointerToObjCPointerCast; return Compatible; } return Incompatible; } // Conversions from pointers that are not covered by the above. if (isa(RHSType)) { // T* -> _Bool if (LHSType == Context.BoolTy) { Kind = CK_PointerToBoolean; return Compatible; } // T* -> int if (LHSType->isIntegerType()) { Kind = CK_PointerToIntegral; return PointerToInt; } return Incompatible; } // Conversions from Objective-C pointers that are not covered by the above. if (isa(RHSType)) { // T* -> _Bool if (LHSType == Context.BoolTy) { Kind = CK_PointerToBoolean; return Compatible; } // T* -> int if (LHSType->isIntegerType()) { Kind = CK_PointerToIntegral; return PointerToInt; } return Incompatible; } // struct A -> struct B if (isa(LHSType) && isa(RHSType)) { if (Context.typesAreCompatible(LHSType, RHSType)) { Kind = CK_NoOp; return Compatible; } } if (LHSType->isSamplerT() && RHSType->isIntegerType()) { Kind = CK_IntToOCLSampler; return Compatible; } return Incompatible; } /// Constructs a transparent union from an expression that is /// used to initialize the transparent union. static void ConstructTransparentUnion(Sema &S, ASTContext &C, ExprResult &EResult, QualType UnionType, FieldDecl *Field) { // Build an initializer list that designates the appropriate member // of the transparent union. Expr *E = EResult.get(); InitListExpr *Initializer = new (C) InitListExpr(C, SourceLocation(), E, SourceLocation()); Initializer->setType(UnionType); Initializer->setInitializedFieldInUnion(Field); // Build a compound literal constructing a value of the transparent // union type from this initializer list. TypeSourceInfo *unionTInfo = C.getTrivialTypeSourceInfo(UnionType); EResult = new (C) CompoundLiteralExpr(SourceLocation(), unionTInfo, UnionType, VK_RValue, Initializer, false); } Sema::AssignConvertType Sema::CheckTransparentUnionArgumentConstraints(QualType ArgType, ExprResult &RHS) { QualType RHSType = RHS.get()->getType(); // If the ArgType is a Union type, we want to handle a potential // transparent_union GCC extension. const RecordType *UT = ArgType->getAsUnionType(); if (!UT || !UT->getDecl()->hasAttr()) return Incompatible; // The field to initialize within the transparent union. RecordDecl *UD = UT->getDecl(); FieldDecl *InitField = nullptr; // It's compatible if the expression matches any of the fields. for (auto *it : UD->fields()) { if (it->getType()->isPointerType()) { // If the transparent union contains a pointer type, we allow: // 1) void pointer // 2) null pointer constant if (RHSType->isPointerType()) if (RHSType->castAs()->getPointeeType()->isVoidType()) { RHS = ImpCastExprToType(RHS.get(), it->getType(), CK_BitCast); InitField = it; break; } if (RHS.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull)) { RHS = ImpCastExprToType(RHS.get(), it->getType(), CK_NullToPointer); InitField = it; break; } } CastKind Kind; if (CheckAssignmentConstraints(it->getType(), RHS, Kind) == Compatible) { RHS = ImpCastExprToType(RHS.get(), it->getType(), Kind); InitField = it; break; } } if (!InitField) return Incompatible; ConstructTransparentUnion(*this, Context, RHS, ArgType, InitField); return Compatible; } Sema::AssignConvertType Sema::CheckSingleAssignmentConstraints(QualType LHSType, ExprResult &CallerRHS, bool Diagnose, bool DiagnoseCFAudited, bool ConvertRHS) { // We need to be able to tell the caller whether we diagnosed a problem, if // they ask us to issue diagnostics. assert((ConvertRHS || !Diagnose) && "can't indicate whether we diagnosed"); // If ConvertRHS is false, we want to leave the caller's RHS untouched. Sadly, // we can't avoid *all* modifications at the moment, so we need some somewhere // to put the updated value. ExprResult LocalRHS = CallerRHS; ExprResult &RHS = ConvertRHS ? CallerRHS : LocalRHS; if (const auto *LHSPtrType = LHSType->getAs()) { if (const auto *RHSPtrType = RHS.get()->getType()->getAs()) { if (RHSPtrType->getPointeeType()->hasAttr(attr::NoDeref) && !LHSPtrType->getPointeeType()->hasAttr(attr::NoDeref)) { Diag(RHS.get()->getExprLoc(), diag::warn_noderef_to_dereferenceable_pointer) << RHS.get()->getSourceRange(); } } } if (getLangOpts().CPlusPlus) { if (!LHSType->isRecordType() && !LHSType->isAtomicType()) { // C++ 5.17p3: If the left operand is not of class type, the // expression is implicitly converted (C++ 4) to the // cv-unqualified type of the left operand. QualType RHSType = RHS.get()->getType(); if (Diagnose) { RHS = PerformImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), AA_Assigning); } else { ImplicitConversionSequence ICS = TryImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), /*SuppressUserConversions=*/false, AllowedExplicit::None, /*InOverloadResolution=*/false, /*CStyle=*/false, /*AllowObjCWritebackConversion=*/false); if (ICS.isFailure()) return Incompatible; RHS = PerformImplicitConversion(RHS.get(), LHSType.getUnqualifiedType(), ICS, AA_Assigning); } if (RHS.isInvalid()) return Incompatible; Sema::AssignConvertType result = Compatible; if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && !CheckObjCARCUnavailableWeakConversion(LHSType, RHSType)) result = IncompatibleObjCWeakRef; return result; } // FIXME: Currently, we fall through and treat C++ classes like C // structures. // FIXME: We also fall through for atomics; not sure what should // happen there, though. } else if (RHS.get()->getType() == Context.OverloadTy) { // As a set of extensions to C, we support overloading on functions. These // functions need to be resolved here. DeclAccessPair DAP; if (FunctionDecl *FD = ResolveAddressOfOverloadedFunction( RHS.get(), LHSType, /*Complain=*/false, DAP)) RHS = FixOverloadedFunctionReference(RHS.get(), DAP, FD); else return Incompatible; } // C99 6.5.16.1p1: the left operand is a pointer and the right is // a null pointer constant. if ((LHSType->isPointerType() || LHSType->isObjCObjectPointerType() || LHSType->isBlockPointerType()) && RHS.get()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNull)) { if (Diagnose || ConvertRHS) { CastKind Kind; CXXCastPath Path; CheckPointerConversion(RHS.get(), LHSType, Kind, Path, /*IgnoreBaseAccess=*/false, Diagnose); if (ConvertRHS) RHS = ImpCastExprToType(RHS.get(), LHSType, Kind, VK_RValue, &Path); } return Compatible; } // OpenCL queue_t type assignment. if (LHSType->isQueueT() && RHS.get()->isNullPointerConstant( Context, Expr::NPC_ValueDependentIsNull)) { RHS = ImpCastExprToType(RHS.get(), LHSType, CK_NullToPointer); return Compatible; } // This check seems unnatural, however it is necessary to ensure the proper // conversion of functions/arrays. If the conversion were done for all // DeclExpr's (created by ActOnIdExpression), it would mess up the unary // expressions that suppress this implicit conversion (&, sizeof). // // Suppress this for references: C++ 8.5.3p5. if (!LHSType->isReferenceType()) { // FIXME: We potentially allocate here even if ConvertRHS is false. RHS = DefaultFunctionArrayLvalueConversion(RHS.get(), Diagnose); if (RHS.isInvalid()) return Incompatible; } CastKind Kind; Sema::AssignConvertType result = CheckAssignmentConstraints(LHSType, RHS, Kind, ConvertRHS); // C99 6.5.16.1p2: The value of the right operand is converted to the // type of the assignment expression. // CheckAssignmentConstraints allows the left-hand side to be a reference, // so that we can use references in built-in functions even in C. // The getNonReferenceType() call makes sure that the resulting expression // does not have reference type. if (result != Incompatible && RHS.get()->getType() != LHSType) { QualType Ty = LHSType.getNonLValueExprType(Context); Expr *E = RHS.get(); // Check for various Objective-C errors. If we are not reporting // diagnostics and just checking for errors, e.g., during overload // resolution, return Incompatible to indicate the failure. if (getLangOpts().allowsNonTrivialObjCLifetimeQualifiers() && CheckObjCConversion(SourceRange(), Ty, E, CCK_ImplicitConversion, Diagnose, DiagnoseCFAudited) != ACR_okay) { if (!Diagnose) return Incompatible; } if (getLangOpts().ObjC && (CheckObjCBridgeRelatedConversions(E->getBeginLoc(), LHSType, E->getType(), E, Diagnose) || CheckConversionToObjCLiteral(LHSType, E, Diagnose))) { if (!Diagnose) return Incompatible; // Replace the expression with a corrected version and continue so we // can find further errors. RHS = E; return Compatible; } if (ConvertRHS) RHS = ImpCastExprToType(E, Ty, Kind); } return result; } namespace { /// The original operand to an operator, prior to the application of the usual /// arithmetic conversions and converting the arguments of a builtin operator /// candidate. struct OriginalOperand { explicit OriginalOperand(Expr *Op) : Orig(Op), Conversion(nullptr) { if (auto *MTE = dyn_cast(Op)) Op = MTE->getSubExpr(); if (auto *BTE = dyn_cast(Op)) Op = BTE->getSubExpr(); if (auto *ICE = dyn_cast(Op)) { Orig = ICE->getSubExprAsWritten(); Conversion = ICE->getConversionFunction(); } } QualType getType() const { return Orig->getType(); } Expr *Orig; NamedDecl *Conversion; }; } QualType Sema::InvalidOperands(SourceLocation Loc, ExprResult &LHS, ExprResult &RHS) { OriginalOperand OrigLHS(LHS.get()), OrigRHS(RHS.get()); Diag(Loc, diag::err_typecheck_invalid_operands) << OrigLHS.getType() << OrigRHS.getType() << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); // If a user-defined conversion was applied to either of the operands prior // to applying the built-in operator rules, tell the user about it. if (OrigLHS.Conversion) { Diag(OrigLHS.Conversion->getLocation(), diag::note_typecheck_invalid_operands_converted) << 0 << LHS.get()->getType(); } if (OrigRHS.Conversion) { Diag(OrigRHS.Conversion->getLocation(), diag::note_typecheck_invalid_operands_converted) << 1 << RHS.get()->getType(); } return QualType(); } // Diagnose cases where a scalar was implicitly converted to a vector and // diagnose the underlying types. Otherwise, diagnose the error // as invalid vector logical operands for non-C++ cases. QualType Sema::InvalidLogicalVectorOperands(SourceLocation Loc, ExprResult &LHS, ExprResult &RHS) { QualType LHSType = LHS.get()->IgnoreImpCasts()->getType(); QualType RHSType = RHS.get()->IgnoreImpCasts()->getType(); bool LHSNatVec = LHSType->isVectorType(); bool RHSNatVec = RHSType->isVectorType(); if (!(LHSNatVec && RHSNatVec)) { Expr *Vector = LHSNatVec ? LHS.get() : RHS.get(); Expr *NonVector = !LHSNatVec ? LHS.get() : RHS.get(); Diag(Loc, diag::err_typecheck_logical_vector_expr_gnu_cpp_restrict) << 0 << Vector->getType() << NonVector->IgnoreImpCasts()->getType() << Vector->getSourceRange(); return QualType(); } Diag(Loc, diag::err_typecheck_logical_vector_expr_gnu_cpp_restrict) << 1 << LHSType << RHSType << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } /// Try to convert a value of non-vector type to a vector type by converting /// the type to the element type of the vector and then performing a splat. /// If the language is OpenCL, we only use conversions that promote scalar /// rank; for C, Obj-C, and C++ we allow any real scalar conversion except /// for float->int. /// /// OpenCL V2.0 6.2.6.p2: /// An error shall occur if any scalar operand type has greater rank /// than the type of the vector element. /// /// \param scalar - if non-null, actually perform the conversions /// \return true if the operation fails (but without diagnosing the failure) static bool tryVectorConvertAndSplat(Sema &S, ExprResult *scalar, QualType scalarTy, QualType vectorEltTy, QualType vectorTy, unsigned &DiagID) { // The conversion to apply to the scalar before splatting it, // if necessary. CastKind scalarCast = CK_NoOp; if (vectorEltTy->isIntegralType(S.Context)) { if (S.getLangOpts().OpenCL && (scalarTy->isRealFloatingType() || (scalarTy->isIntegerType() && S.Context.getIntegerTypeOrder(vectorEltTy, scalarTy) < 0))) { DiagID = diag::err_opencl_scalar_type_rank_greater_than_vector_type; return true; } if (!scalarTy->isIntegralType(S.Context)) return true; scalarCast = CK_IntegralCast; } else if (vectorEltTy->isRealFloatingType()) { if (scalarTy->isRealFloatingType()) { if (S.getLangOpts().OpenCL && S.Context.getFloatingTypeOrder(vectorEltTy, scalarTy) < 0) { DiagID = diag::err_opencl_scalar_type_rank_greater_than_vector_type; return true; } scalarCast = CK_FloatingCast; } else if (scalarTy->isIntegralType(S.Context)) scalarCast = CK_IntegralToFloating; else return true; } else { return true; } // Adjust scalar if desired. if (scalar) { if (scalarCast != CK_NoOp) *scalar = S.ImpCastExprToType(scalar->get(), vectorEltTy, scalarCast); *scalar = S.ImpCastExprToType(scalar->get(), vectorTy, CK_VectorSplat); } return false; } /// Convert vector E to a vector with the same number of elements but different /// element type. static ExprResult convertVector(Expr *E, QualType ElementType, Sema &S) { const auto *VecTy = E->getType()->getAs(); assert(VecTy && "Expression E must be a vector"); QualType NewVecTy = S.Context.getVectorType(ElementType, VecTy->getNumElements(), VecTy->getVectorKind()); // Look through the implicit cast. Return the subexpression if its type is // NewVecTy. if (auto *ICE = dyn_cast(E)) if (ICE->getSubExpr()->getType() == NewVecTy) return ICE->getSubExpr(); auto Cast = ElementType->isIntegerType() ? CK_IntegralCast : CK_FloatingCast; return S.ImpCastExprToType(E, NewVecTy, Cast); } /// Test if a (constant) integer Int can be casted to another integer type /// IntTy without losing precision. static bool canConvertIntToOtherIntTy(Sema &S, ExprResult *Int, QualType OtherIntTy) { QualType IntTy = Int->get()->getType().getUnqualifiedType(); // Reject cases where the value of the Int is unknown as that would // possibly cause truncation, but accept cases where the scalar can be // demoted without loss of precision. Expr::EvalResult EVResult; bool CstInt = Int->get()->EvaluateAsInt(EVResult, S.Context); int Order = S.Context.getIntegerTypeOrder(OtherIntTy, IntTy); bool IntSigned = IntTy->hasSignedIntegerRepresentation(); bool OtherIntSigned = OtherIntTy->hasSignedIntegerRepresentation(); if (CstInt) { // If the scalar is constant and is of a higher order and has more active // bits that the vector element type, reject it. llvm::APSInt Result = EVResult.Val.getInt(); unsigned NumBits = IntSigned ? (Result.isNegative() ? Result.getMinSignedBits() : Result.getActiveBits()) : Result.getActiveBits(); if (Order < 0 && S.Context.getIntWidth(OtherIntTy) < NumBits) return true; // If the signedness of the scalar type and the vector element type // differs and the number of bits is greater than that of the vector // element reject it. return (IntSigned != OtherIntSigned && NumBits > S.Context.getIntWidth(OtherIntTy)); } // Reject cases where the value of the scalar is not constant and it's // order is greater than that of the vector element type. return (Order < 0); } /// Test if a (constant) integer Int can be casted to floating point type /// FloatTy without losing precision. static bool canConvertIntTyToFloatTy(Sema &S, ExprResult *Int, QualType FloatTy) { QualType IntTy = Int->get()->getType().getUnqualifiedType(); // Determine if the integer constant can be expressed as a floating point // number of the appropriate type. Expr::EvalResult EVResult; bool CstInt = Int->get()->EvaluateAsInt(EVResult, S.Context); uint64_t Bits = 0; if (CstInt) { // Reject constants that would be truncated if they were converted to // the floating point type. Test by simple to/from conversion. // FIXME: Ideally the conversion to an APFloat and from an APFloat // could be avoided if there was a convertFromAPInt method // which could signal back if implicit truncation occurred. llvm::APSInt Result = EVResult.Val.getInt(); llvm::APFloat Float(S.Context.getFloatTypeSemantics(FloatTy)); Float.convertFromAPInt(Result, IntTy->hasSignedIntegerRepresentation(), llvm::APFloat::rmTowardZero); llvm::APSInt ConvertBack(S.Context.getIntWidth(IntTy), !IntTy->hasSignedIntegerRepresentation()); bool Ignored = false; Float.convertToInteger(ConvertBack, llvm::APFloat::rmNearestTiesToEven, &Ignored); if (Result != ConvertBack) return true; } else { // Reject types that cannot be fully encoded into the mantissa of // the float. Bits = S.Context.getTypeSize(IntTy); unsigned FloatPrec = llvm::APFloat::semanticsPrecision( S.Context.getFloatTypeSemantics(FloatTy)); if (Bits > FloatPrec) return true; } return false; } /// Attempt to convert and splat Scalar into a vector whose types matches /// Vector following GCC conversion rules. The rule is that implicit /// conversion can occur when Scalar can be casted to match Vector's element /// type without causing truncation of Scalar. static bool tryGCCVectorConvertAndSplat(Sema &S, ExprResult *Scalar, ExprResult *Vector) { QualType ScalarTy = Scalar->get()->getType().getUnqualifiedType(); QualType VectorTy = Vector->get()->getType().getUnqualifiedType(); const VectorType *VT = VectorTy->getAs(); assert(!isa(VT) && "ExtVectorTypes should not be handled here!"); QualType VectorEltTy = VT->getElementType(); // Reject cases where the vector element type or the scalar element type are // not integral or floating point types. if (!VectorEltTy->isArithmeticType() || !ScalarTy->isArithmeticType()) return true; // The conversion to apply to the scalar before splatting it, // if necessary. CastKind ScalarCast = CK_NoOp; // Accept cases where the vector elements are integers and the scalar is // an integer. // FIXME: Notionally if the scalar was a floating point value with a precise // integral representation, we could cast it to an appropriate integer // type and then perform the rest of the checks here. GCC will perform // this conversion in some cases as determined by the input language. // We should accept it on a language independent basis. if (VectorEltTy->isIntegralType(S.Context) && ScalarTy->isIntegralType(S.Context) && S.Context.getIntegerTypeOrder(VectorEltTy, ScalarTy)) { if (canConvertIntToOtherIntTy(S, Scalar, VectorEltTy)) return true; ScalarCast = CK_IntegralCast; } else if (VectorEltTy->isIntegralType(S.Context) && ScalarTy->isRealFloatingType()) { if (S.Context.getTypeSize(VectorEltTy) == S.Context.getTypeSize(ScalarTy)) ScalarCast = CK_FloatingToIntegral; else return true; } else if (VectorEltTy->isRealFloatingType()) { if (ScalarTy->isRealFloatingType()) { // Reject cases where the scalar type is not a constant and has a higher // Order than the vector element type. llvm::APFloat Result(0.0); // Determine whether this is a constant scalar. In the event that the // value is dependent (and thus cannot be evaluated by the constant // evaluator), skip the evaluation. This will then diagnose once the // expression is instantiated. bool CstScalar = Scalar->get()->isValueDependent() || Scalar->get()->EvaluateAsFloat(Result, S.Context); int Order = S.Context.getFloatingTypeOrder(VectorEltTy, ScalarTy); if (!CstScalar && Order < 0) return true; // If the scalar cannot be safely casted to the vector element type, // reject it. if (CstScalar) { bool Truncated = false; Result.convert(S.Context.getFloatTypeSemantics(VectorEltTy), llvm::APFloat::rmNearestTiesToEven, &Truncated); if (Truncated) return true; } ScalarCast = CK_FloatingCast; } else if (ScalarTy->isIntegralType(S.Context)) { if (canConvertIntTyToFloatTy(S, Scalar, VectorEltTy)) return true; ScalarCast = CK_IntegralToFloating; } else return true; } else if (ScalarTy->isEnumeralType()) return true; // Adjust scalar if desired. if (Scalar) { if (ScalarCast != CK_NoOp) *Scalar = S.ImpCastExprToType(Scalar->get(), VectorEltTy, ScalarCast); *Scalar = S.ImpCastExprToType(Scalar->get(), VectorTy, CK_VectorSplat); } return false; } QualType Sema::CheckVectorOperands(ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign, bool AllowBothBool, bool AllowBoolConversions) { if (!IsCompAssign) { LHS = DefaultFunctionArrayLvalueConversion(LHS.get()); if (LHS.isInvalid()) return QualType(); } RHS = DefaultFunctionArrayLvalueConversion(RHS.get()); if (RHS.isInvalid()) return QualType(); // For conversion purposes, we ignore any qualifiers. // For example, "const float" and "float" are equivalent. QualType LHSType = LHS.get()->getType().getUnqualifiedType(); QualType RHSType = RHS.get()->getType().getUnqualifiedType(); const VectorType *LHSVecType = LHSType->getAs(); const VectorType *RHSVecType = RHSType->getAs(); assert(LHSVecType || RHSVecType); if ((LHSVecType && LHSVecType->getElementType()->isBFloat16Type()) || (RHSVecType && RHSVecType->getElementType()->isBFloat16Type())) return InvalidOperands(Loc, LHS, RHS); // AltiVec-style "vector bool op vector bool" combinations are allowed // for some operators but not others. if (!AllowBothBool && LHSVecType && LHSVecType->getVectorKind() == VectorType::AltiVecBool && RHSVecType && RHSVecType->getVectorKind() == VectorType::AltiVecBool) return InvalidOperands(Loc, LHS, RHS); // If the vector types are identical, return. if (Context.hasSameType(LHSType, RHSType)) return LHSType; // If we have compatible AltiVec and GCC vector types, use the AltiVec type. if (LHSVecType && RHSVecType && Context.areCompatibleVectorTypes(LHSType, RHSType)) { if (isa(LHSVecType)) { RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); return LHSType; } if (!IsCompAssign) LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); return RHSType; } // AllowBoolConversions says that bool and non-bool AltiVec vectors // can be mixed, with the result being the non-bool type. The non-bool // operand must have integer element type. if (AllowBoolConversions && LHSVecType && RHSVecType && LHSVecType->getNumElements() == RHSVecType->getNumElements() && (Context.getTypeSize(LHSVecType->getElementType()) == Context.getTypeSize(RHSVecType->getElementType()))) { if (LHSVecType->getVectorKind() == VectorType::AltiVecVector && LHSVecType->getElementType()->isIntegerType() && RHSVecType->getVectorKind() == VectorType::AltiVecBool) { RHS = ImpCastExprToType(RHS.get(), LHSType, CK_BitCast); return LHSType; } if (!IsCompAssign && LHSVecType->getVectorKind() == VectorType::AltiVecBool && RHSVecType->getVectorKind() == VectorType::AltiVecVector && RHSVecType->getElementType()->isIntegerType()) { LHS = ImpCastExprToType(LHS.get(), RHSType, CK_BitCast); return RHSType; } } // Expressions containing fixed-length and sizeless SVE vectors are invalid // since the ambiguity can affect the ABI. auto IsSveConversion = [](QualType FirstType, QualType SecondType) { const VectorType *VecType = SecondType->getAs(); return FirstType->isSizelessBuiltinType() && VecType && (VecType->getVectorKind() == VectorType::SveFixedLengthDataVector || VecType->getVectorKind() == VectorType::SveFixedLengthPredicateVector); }; if (IsSveConversion(LHSType, RHSType) || IsSveConversion(RHSType, LHSType)) { Diag(Loc, diag::err_typecheck_sve_ambiguous) << LHSType << RHSType; return QualType(); } // Expressions containing GNU and SVE (fixed or sizeless) vectors are invalid // since the ambiguity can affect the ABI. auto IsSveGnuConversion = [](QualType FirstType, QualType SecondType) { const VectorType *FirstVecType = FirstType->getAs(); const VectorType *SecondVecType = SecondType->getAs(); if (FirstVecType && SecondVecType) return FirstVecType->getVectorKind() == VectorType::GenericVector && (SecondVecType->getVectorKind() == VectorType::SveFixedLengthDataVector || SecondVecType->getVectorKind() == VectorType::SveFixedLengthPredicateVector); return FirstType->isSizelessBuiltinType() && SecondVecType && SecondVecType->getVectorKind() == VectorType::GenericVector; }; if (IsSveGnuConversion(LHSType, RHSType) || IsSveGnuConversion(RHSType, LHSType)) { Diag(Loc, diag::err_typecheck_sve_gnu_ambiguous) << LHSType << RHSType; return QualType(); } // If there's a vector type and a scalar, try to convert the scalar to // the vector element type and splat. unsigned DiagID = diag::err_typecheck_vector_not_convertable; if (!RHSVecType) { if (isa(LHSVecType)) { if (!tryVectorConvertAndSplat(*this, &RHS, RHSType, LHSVecType->getElementType(), LHSType, DiagID)) return LHSType; } else { if (!tryGCCVectorConvertAndSplat(*this, &RHS, &LHS)) return LHSType; } } if (!LHSVecType) { if (isa(RHSVecType)) { if (!tryVectorConvertAndSplat(*this, (IsCompAssign ? nullptr : &LHS), LHSType, RHSVecType->getElementType(), RHSType, DiagID)) return RHSType; } else { if (LHS.get()->getValueKind() == VK_LValue || !tryGCCVectorConvertAndSplat(*this, &LHS, &RHS)) return RHSType; } } // FIXME: The code below also handles conversion between vectors and // non-scalars, we should break this down into fine grained specific checks // and emit proper diagnostics. QualType VecType = LHSVecType ? LHSType : RHSType; const VectorType *VT = LHSVecType ? LHSVecType : RHSVecType; QualType OtherType = LHSVecType ? RHSType : LHSType; ExprResult *OtherExpr = LHSVecType ? &RHS : &LHS; if (isLaxVectorConversion(OtherType, VecType)) { // If we're allowing lax vector conversions, only the total (data) size // needs to be the same. For non compound assignment, if one of the types is // scalar, the result is always the vector type. if (!IsCompAssign) { *OtherExpr = ImpCastExprToType(OtherExpr->get(), VecType, CK_BitCast); return VecType; // In a compound assignment, lhs += rhs, 'lhs' is a lvalue src, forbidding // any implicit cast. Here, the 'rhs' should be implicit casted to 'lhs' // type. Note that this is already done by non-compound assignments in // CheckAssignmentConstraints. If it's a scalar type, only bitcast for // <1 x T> -> T. The result is also a vector type. } else if (OtherType->isExtVectorType() || OtherType->isVectorType() || (OtherType->isScalarType() && VT->getNumElements() == 1)) { ExprResult *RHSExpr = &RHS; *RHSExpr = ImpCastExprToType(RHSExpr->get(), LHSType, CK_BitCast); return VecType; } } // Okay, the expression is invalid. // If there's a non-vector, non-real operand, diagnose that. if ((!RHSVecType && !RHSType->isRealType()) || (!LHSVecType && !LHSType->isRealType())) { Diag(Loc, diag::err_typecheck_vector_not_convertable_non_scalar) << LHSType << RHSType << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } // OpenCL V1.1 6.2.6.p1: // If the operands are of more than one vector type, then an error shall // occur. Implicit conversions between vector types are not permitted, per // section 6.2.1. if (getLangOpts().OpenCL && RHSVecType && isa(RHSVecType) && LHSVecType && isa(LHSVecType)) { Diag(Loc, diag::err_opencl_implicit_vector_conversion) << LHSType << RHSType; return QualType(); } // If there is a vector type that is not a ExtVector and a scalar, we reach // this point if scalar could not be converted to the vector's element type // without truncation. if ((RHSVecType && !isa(RHSVecType)) || (LHSVecType && !isa(LHSVecType))) { QualType Scalar = LHSVecType ? RHSType : LHSType; QualType Vector = LHSVecType ? LHSType : RHSType; unsigned ScalarOrVector = LHSVecType && RHSVecType ? 1 : 0; Diag(Loc, diag::err_typecheck_vector_not_convertable_implict_truncation) << ScalarOrVector << Scalar << Vector; return QualType(); } // Otherwise, use the generic diagnostic. Diag(Loc, DiagID) << LHSType << RHSType << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } // checkArithmeticNull - Detect when a NULL constant is used improperly in an // expression. These are mainly cases where the null pointer is used as an // integer instead of a pointer. static void checkArithmeticNull(Sema &S, ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompare) { // The canonical way to check for a GNU null is with isNullPointerConstant, // but we use a bit of a hack here for speed; this is a relatively // hot path, and isNullPointerConstant is slow. bool LHSNull = isa(LHS.get()->IgnoreParenImpCasts()); bool RHSNull = isa(RHS.get()->IgnoreParenImpCasts()); QualType NonNullType = LHSNull ? RHS.get()->getType() : LHS.get()->getType(); // Avoid analyzing cases where the result will either be invalid (and // diagnosed as such) or entirely valid and not something to warn about. if ((!LHSNull && !RHSNull) || NonNullType->isBlockPointerType() || NonNullType->isMemberPointerType() || NonNullType->isFunctionType()) return; // Comparison operations would not make sense with a null pointer no matter // what the other expression is. if (!IsCompare) { S.Diag(Loc, diag::warn_null_in_arithmetic_operation) << (LHSNull ? LHS.get()->getSourceRange() : SourceRange()) << (RHSNull ? RHS.get()->getSourceRange() : SourceRange()); return; } // The rest of the operations only make sense with a null pointer // if the other expression is a pointer. if (LHSNull == RHSNull || NonNullType->isAnyPointerType() || NonNullType->canDecayToPointerType()) return; S.Diag(Loc, diag::warn_null_in_comparison_operation) << LHSNull /* LHS is NULL */ << NonNullType << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); } static void DiagnoseDivisionSizeofPointerOrArray(Sema &S, Expr *LHS, Expr *RHS, SourceLocation Loc) { const auto *LUE = dyn_cast(LHS); const auto *RUE = dyn_cast(RHS); if (!LUE || !RUE) return; if (LUE->getKind() != UETT_SizeOf || LUE->isArgumentType() || RUE->getKind() != UETT_SizeOf) return; const Expr *LHSArg = LUE->getArgumentExpr()->IgnoreParens(); QualType LHSTy = LHSArg->getType(); QualType RHSTy; if (RUE->isArgumentType()) RHSTy = RUE->getArgumentType().getNonReferenceType(); else RHSTy = RUE->getArgumentExpr()->IgnoreParens()->getType(); if (LHSTy->isPointerType() && !RHSTy->isPointerType()) { if (!S.Context.hasSameUnqualifiedType(LHSTy->getPointeeType(), RHSTy)) return; S.Diag(Loc, diag::warn_division_sizeof_ptr) << LHS << LHS->getSourceRange(); if (const auto *DRE = dyn_cast(LHSArg)) { if (const ValueDecl *LHSArgDecl = DRE->getDecl()) S.Diag(LHSArgDecl->getLocation(), diag::note_pointer_declared_here) << LHSArgDecl; } } else if (const auto *ArrayTy = S.Context.getAsArrayType(LHSTy)) { QualType ArrayElemTy = ArrayTy->getElementType(); if (ArrayElemTy != S.Context.getBaseElementType(ArrayTy) || ArrayElemTy->isDependentType() || RHSTy->isDependentType() || RHSTy->isReferenceType() || ArrayElemTy->isCharType() || S.Context.getTypeSize(ArrayElemTy) == S.Context.getTypeSize(RHSTy)) return; S.Diag(Loc, diag::warn_division_sizeof_array) << LHSArg->getSourceRange() << ArrayElemTy << RHSTy; if (const auto *DRE = dyn_cast(LHSArg)) { if (const ValueDecl *LHSArgDecl = DRE->getDecl()) S.Diag(LHSArgDecl->getLocation(), diag::note_array_declared_here) << LHSArgDecl; } S.Diag(Loc, diag::note_precedence_silence) << RHS; } } static void DiagnoseBadDivideOrRemainderValues(Sema& S, ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsDiv) { // Check for division/remainder by zero. Expr::EvalResult RHSValue; if (!RHS.get()->isValueDependent() && RHS.get()->EvaluateAsInt(RHSValue, S.Context) && RHSValue.Val.getInt() == 0) S.DiagRuntimeBehavior(Loc, RHS.get(), S.PDiag(diag::warn_remainder_division_by_zero) << IsDiv << RHS.get()->getSourceRange()); } QualType Sema::CheckMultiplyDivideOperands(ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign, bool IsDiv) { checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, /*AllowBothBool*/getLangOpts().AltiVec, /*AllowBoolConversions*/false); if (!IsDiv && (LHS.get()->getType()->isConstantMatrixType() || RHS.get()->getType()->isConstantMatrixType())) return CheckMatrixMultiplyOperands(LHS, RHS, Loc, IsCompAssign); QualType compType = UsualArithmeticConversions( LHS, RHS, Loc, IsCompAssign ? ACK_CompAssign : ACK_Arithmetic); if (LHS.isInvalid() || RHS.isInvalid()) return QualType(); if (compType.isNull() || !compType->isArithmeticType()) return InvalidOperands(Loc, LHS, RHS); if (IsDiv) { DiagnoseBadDivideOrRemainderValues(*this, LHS, RHS, Loc, IsDiv); DiagnoseDivisionSizeofPointerOrArray(*this, LHS.get(), RHS.get(), Loc); } return compType; } QualType Sema::CheckRemainderOperands( ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign) { checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) { if (LHS.get()->getType()->hasIntegerRepresentation() && RHS.get()->getType()->hasIntegerRepresentation()) return CheckVectorOperands(LHS, RHS, Loc, IsCompAssign, /*AllowBothBool*/getLangOpts().AltiVec, /*AllowBoolConversions*/false); return InvalidOperands(Loc, LHS, RHS); } QualType compType = UsualArithmeticConversions( LHS, RHS, Loc, IsCompAssign ? ACK_CompAssign : ACK_Arithmetic); if (LHS.isInvalid() || RHS.isInvalid()) return QualType(); if (compType.isNull() || !compType->isIntegerType()) return InvalidOperands(Loc, LHS, RHS); DiagnoseBadDivideOrRemainderValues(*this, LHS, RHS, Loc, false /* IsDiv */); return compType; } /// Diagnose invalid arithmetic on two void pointers. static void diagnoseArithmeticOnTwoVoidPointers(Sema &S, SourceLocation Loc, Expr *LHSExpr, Expr *RHSExpr) { S.Diag(Loc, S.getLangOpts().CPlusPlus ? diag::err_typecheck_pointer_arith_void_type : diag::ext_gnu_void_ptr) << 1 /* two pointers */ << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); } /// Diagnose invalid arithmetic on a void pointer. static void diagnoseArithmeticOnVoidPointer(Sema &S, SourceLocation Loc, Expr *Pointer) { S.Diag(Loc, S.getLangOpts().CPlusPlus ? diag::err_typecheck_pointer_arith_void_type : diag::ext_gnu_void_ptr) << 0 /* one pointer */ << Pointer->getSourceRange(); } /// Diagnose invalid arithmetic on a null pointer. /// /// If \p IsGNUIdiom is true, the operation is using the 'p = (i8*)nullptr + n' /// idiom, which we recognize as a GNU extension. /// static void diagnoseArithmeticOnNullPointer(Sema &S, SourceLocation Loc, Expr *Pointer, bool IsGNUIdiom) { if (IsGNUIdiom) S.Diag(Loc, diag::warn_gnu_null_ptr_arith) << Pointer->getSourceRange(); else S.Diag(Loc, diag::warn_pointer_arith_null_ptr) << S.getLangOpts().CPlusPlus << Pointer->getSourceRange(); } /// Diagnose invalid arithmetic on two function pointers. static void diagnoseArithmeticOnTwoFunctionPointers(Sema &S, SourceLocation Loc, Expr *LHS, Expr *RHS) { assert(LHS->getType()->isAnyPointerType()); assert(RHS->getType()->isAnyPointerType()); S.Diag(Loc, S.getLangOpts().CPlusPlus ? diag::err_typecheck_pointer_arith_function_type : diag::ext_gnu_ptr_func_arith) << 1 /* two pointers */ << LHS->getType()->getPointeeType() // We only show the second type if it differs from the first. << (unsigned)!S.Context.hasSameUnqualifiedType(LHS->getType(), RHS->getType()) << RHS->getType()->getPointeeType() << LHS->getSourceRange() << RHS->getSourceRange(); } /// Diagnose invalid arithmetic on a function pointer. static void diagnoseArithmeticOnFunctionPointer(Sema &S, SourceLocation Loc, Expr *Pointer) { assert(Pointer->getType()->isAnyPointerType()); S.Diag(Loc, S.getLangOpts().CPlusPlus ? diag::err_typecheck_pointer_arith_function_type : diag::ext_gnu_ptr_func_arith) << 0 /* one pointer */ << Pointer->getType()->getPointeeType() << 0 /* one pointer, so only one type */ << Pointer->getSourceRange(); } /// Emit error if Operand is incomplete pointer type /// /// \returns True if pointer has incomplete type static bool checkArithmeticIncompletePointerType(Sema &S, SourceLocation Loc, Expr *Operand) { QualType ResType = Operand->getType(); if (const AtomicType *ResAtomicType = ResType->getAs()) ResType = ResAtomicType->getValueType(); assert(ResType->isAnyPointerType() && !ResType->isDependentType()); QualType PointeeTy = ResType->getPointeeType(); return S.RequireCompleteSizedType( Loc, PointeeTy, diag::err_typecheck_arithmetic_incomplete_or_sizeless_type, Operand->getSourceRange()); } /// Check the validity of an arithmetic pointer operand. /// /// If the operand has pointer type, this code will check for pointer types /// which are invalid in arithmetic operations. These will be diagnosed /// appropriately, including whether or not the use is supported as an /// extension. /// /// \returns True when the operand is valid to use (even if as an extension). static bool checkArithmeticOpPointerOperand(Sema &S, SourceLocation Loc, Expr *Operand) { QualType ResType = Operand->getType(); if (const AtomicType *ResAtomicType = ResType->getAs()) ResType = ResAtomicType->getValueType(); if (!ResType->isAnyPointerType()) return true; QualType PointeeTy = ResType->getPointeeType(); if (PointeeTy->isVoidType()) { diagnoseArithmeticOnVoidPointer(S, Loc, Operand); return !S.getLangOpts().CPlusPlus; } if (PointeeTy->isFunctionType()) { diagnoseArithmeticOnFunctionPointer(S, Loc, Operand); return !S.getLangOpts().CPlusPlus; } if (checkArithmeticIncompletePointerType(S, Loc, Operand)) return false; return true; } /// Check the validity of a binary arithmetic operation w.r.t. pointer /// operands. /// /// This routine will diagnose any invalid arithmetic on pointer operands much /// like \see checkArithmeticOpPointerOperand. However, it has special logic /// for emitting a single diagnostic even for operations where both LHS and RHS /// are (potentially problematic) pointers. /// /// \returns True when the operand is valid to use (even if as an extension). static bool checkArithmeticBinOpPointerOperands(Sema &S, SourceLocation Loc, Expr *LHSExpr, Expr *RHSExpr) { bool isLHSPointer = LHSExpr->getType()->isAnyPointerType(); bool isRHSPointer = RHSExpr->getType()->isAnyPointerType(); if (!isLHSPointer && !isRHSPointer) return true; QualType LHSPointeeTy, RHSPointeeTy; if (isLHSPointer) LHSPointeeTy = LHSExpr->getType()->getPointeeType(); if (isRHSPointer) RHSPointeeTy = RHSExpr->getType()->getPointeeType(); // if both are pointers check if operation is valid wrt address spaces if (isLHSPointer && isRHSPointer) { if (!LHSPointeeTy.isAddressSpaceOverlapping(RHSPointeeTy)) { S.Diag(Loc, diag::err_typecheck_op_on_nonoverlapping_address_space_pointers) << LHSExpr->getType() << RHSExpr->getType() << 1 /*arithmetic op*/ << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); return false; } } // Check for arithmetic on pointers to incomplete types. bool isLHSVoidPtr = isLHSPointer && LHSPointeeTy->isVoidType(); bool isRHSVoidPtr = isRHSPointer && RHSPointeeTy->isVoidType(); if (isLHSVoidPtr || isRHSVoidPtr) { if (!isRHSVoidPtr) diagnoseArithmeticOnVoidPointer(S, Loc, LHSExpr); else if (!isLHSVoidPtr) diagnoseArithmeticOnVoidPointer(S, Loc, RHSExpr); else diagnoseArithmeticOnTwoVoidPointers(S, Loc, LHSExpr, RHSExpr); return !S.getLangOpts().CPlusPlus; } bool isLHSFuncPtr = isLHSPointer && LHSPointeeTy->isFunctionType(); bool isRHSFuncPtr = isRHSPointer && RHSPointeeTy->isFunctionType(); if (isLHSFuncPtr || isRHSFuncPtr) { if (!isRHSFuncPtr) diagnoseArithmeticOnFunctionPointer(S, Loc, LHSExpr); else if (!isLHSFuncPtr) diagnoseArithmeticOnFunctionPointer(S, Loc, RHSExpr); else diagnoseArithmeticOnTwoFunctionPointers(S, Loc, LHSExpr, RHSExpr); return !S.getLangOpts().CPlusPlus; } if (isLHSPointer && checkArithmeticIncompletePointerType(S, Loc, LHSExpr)) return false; if (isRHSPointer && checkArithmeticIncompletePointerType(S, Loc, RHSExpr)) return false; return true; } /// diagnoseStringPlusInt - Emit a warning when adding an integer to a string /// literal. static void diagnoseStringPlusInt(Sema &Self, SourceLocation OpLoc, Expr *LHSExpr, Expr *RHSExpr) { StringLiteral* StrExpr = dyn_cast(LHSExpr->IgnoreImpCasts()); Expr* IndexExpr = RHSExpr; if (!StrExpr) { StrExpr = dyn_cast(RHSExpr->IgnoreImpCasts()); IndexExpr = LHSExpr; } bool IsStringPlusInt = StrExpr && IndexExpr->getType()->isIntegralOrUnscopedEnumerationType(); if (!IsStringPlusInt || IndexExpr->isValueDependent()) return; SourceRange DiagRange(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); Self.Diag(OpLoc, diag::warn_string_plus_int) << DiagRange << IndexExpr->IgnoreImpCasts()->getType(); // Only print a fixit for "str" + int, not for int + "str". if (IndexExpr == RHSExpr) { SourceLocation EndLoc = Self.getLocForEndOfToken(RHSExpr->getEndLoc()); Self.Diag(OpLoc, diag::note_string_plus_scalar_silence) << FixItHint::CreateInsertion(LHSExpr->getBeginLoc(), "&") << FixItHint::CreateReplacement(SourceRange(OpLoc), "[") << FixItHint::CreateInsertion(EndLoc, "]"); } else Self.Diag(OpLoc, diag::note_string_plus_scalar_silence); } /// Emit a warning when adding a char literal to a string. static void diagnoseStringPlusChar(Sema &Self, SourceLocation OpLoc, Expr *LHSExpr, Expr *RHSExpr) { const Expr *StringRefExpr = LHSExpr; const CharacterLiteral *CharExpr = dyn_cast(RHSExpr->IgnoreImpCasts()); if (!CharExpr) { CharExpr = dyn_cast(LHSExpr->IgnoreImpCasts()); StringRefExpr = RHSExpr; } if (!CharExpr || !StringRefExpr) return; const QualType StringType = StringRefExpr->getType(); // Return if not a PointerType. if (!StringType->isAnyPointerType()) return; // Return if not a CharacterType. if (!StringType->getPointeeType()->isAnyCharacterType()) return; ASTContext &Ctx = Self.getASTContext(); SourceRange DiagRange(LHSExpr->getBeginLoc(), RHSExpr->getEndLoc()); const QualType CharType = CharExpr->getType(); if (!CharType->isAnyCharacterType() && CharType->isIntegerType() && llvm::isUIntN(Ctx.getCharWidth(), CharExpr->getValue())) { Self.Diag(OpLoc, diag::warn_string_plus_char) << DiagRange << Ctx.CharTy; } else { Self.Diag(OpLoc, diag::warn_string_plus_char) << DiagRange << CharExpr->getType(); } // Only print a fixit for str + char, not for char + str. if (isa(RHSExpr->IgnoreImpCasts())) { SourceLocation EndLoc = Self.getLocForEndOfToken(RHSExpr->getEndLoc()); Self.Diag(OpLoc, diag::note_string_plus_scalar_silence) << FixItHint::CreateInsertion(LHSExpr->getBeginLoc(), "&") << FixItHint::CreateReplacement(SourceRange(OpLoc), "[") << FixItHint::CreateInsertion(EndLoc, "]"); } else { Self.Diag(OpLoc, diag::note_string_plus_scalar_silence); } } /// Emit error when two pointers are incompatible. static void diagnosePointerIncompatibility(Sema &S, SourceLocation Loc, Expr *LHSExpr, Expr *RHSExpr) { assert(LHSExpr->getType()->isAnyPointerType()); assert(RHSExpr->getType()->isAnyPointerType()); S.Diag(Loc, diag::err_typecheck_sub_ptr_compatible) << LHSExpr->getType() << RHSExpr->getType() << LHSExpr->getSourceRange() << RHSExpr->getSourceRange(); } // C99 6.5.6 QualType Sema::CheckAdditionOperands(ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, BinaryOperatorKind Opc, QualType* CompLHSTy) { checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) { QualType compType = CheckVectorOperands( LHS, RHS, Loc, CompLHSTy, /*AllowBothBool*/getLangOpts().AltiVec, /*AllowBoolConversions*/getLangOpts().ZVector); if (CompLHSTy) *CompLHSTy = compType; return compType; } if (LHS.get()->getType()->isConstantMatrixType() || RHS.get()->getType()->isConstantMatrixType()) { return CheckMatrixElementwiseOperands(LHS, RHS, Loc, CompLHSTy); } QualType compType = UsualArithmeticConversions( LHS, RHS, Loc, CompLHSTy ? ACK_CompAssign : ACK_Arithmetic); if (LHS.isInvalid() || RHS.isInvalid()) return QualType(); // Diagnose "string literal" '+' int and string '+' "char literal". if (Opc == BO_Add) { diagnoseStringPlusInt(*this, Loc, LHS.get(), RHS.get()); diagnoseStringPlusChar(*this, Loc, LHS.get(), RHS.get()); } // handle the common case first (both operands are arithmetic). if (!compType.isNull() && compType->isArithmeticType()) { if (CompLHSTy) *CompLHSTy = compType; return compType; } // Type-checking. Ultimately the pointer's going to be in PExp; // note that we bias towards the LHS being the pointer. Expr *PExp = LHS.get(), *IExp = RHS.get(); bool isObjCPointer; if (PExp->getType()->isPointerType()) { isObjCPointer = false; } else if (PExp->getType()->isObjCObjectPointerType()) { isObjCPointer = true; } else { std::swap(PExp, IExp); if (PExp->getType()->isPointerType()) { isObjCPointer = false; } else if (PExp->getType()->isObjCObjectPointerType()) { isObjCPointer = true; } else { return InvalidOperands(Loc, LHS, RHS); } } assert(PExp->getType()->isAnyPointerType()); if (!IExp->getType()->isIntegerType()) return InvalidOperands(Loc, LHS, RHS); // Adding to a null pointer results in undefined behavior. if (PExp->IgnoreParenCasts()->isNullPointerConstant( Context, Expr::NPC_ValueDependentIsNotNull)) { // In C++ adding zero to a null pointer is defined. Expr::EvalResult KnownVal; if (!getLangOpts().CPlusPlus || (!IExp->isValueDependent() && (!IExp->EvaluateAsInt(KnownVal, Context) || KnownVal.Val.getInt() != 0))) { // Check the conditions to see if this is the 'p = nullptr + n' idiom. bool IsGNUIdiom = BinaryOperator::isNullPointerArithmeticExtension( Context, BO_Add, PExp, IExp); diagnoseArithmeticOnNullPointer(*this, Loc, PExp, IsGNUIdiom); } } if (!checkArithmeticOpPointerOperand(*this, Loc, PExp)) return QualType(); if (isObjCPointer && checkArithmeticOnObjCPointer(*this, Loc, PExp)) return QualType(); // Check array bounds for pointer arithemtic CheckArrayAccess(PExp, IExp); if (CompLHSTy) { QualType LHSTy = Context.isPromotableBitField(LHS.get()); if (LHSTy.isNull()) { LHSTy = LHS.get()->getType(); if (LHSTy->isPromotableIntegerType()) LHSTy = Context.getPromotedIntegerType(LHSTy); } *CompLHSTy = LHSTy; } return PExp->getType(); } // C99 6.5.6 QualType Sema::CheckSubtractionOperands(ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, QualType* CompLHSTy) { checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) { QualType compType = CheckVectorOperands( LHS, RHS, Loc, CompLHSTy, /*AllowBothBool*/getLangOpts().AltiVec, /*AllowBoolConversions*/getLangOpts().ZVector); if (CompLHSTy) *CompLHSTy = compType; return compType; } if (LHS.get()->getType()->isConstantMatrixType() || RHS.get()->getType()->isConstantMatrixType()) { return CheckMatrixElementwiseOperands(LHS, RHS, Loc, CompLHSTy); } QualType compType = UsualArithmeticConversions( LHS, RHS, Loc, CompLHSTy ? ACK_CompAssign : ACK_Arithmetic); if (LHS.isInvalid() || RHS.isInvalid()) return QualType(); // Enforce type constraints: C99 6.5.6p3. // Handle the common case first (both operands are arithmetic). if (!compType.isNull() && compType->isArithmeticType()) { if (CompLHSTy) *CompLHSTy = compType; return compType; } // Either ptr - int or ptr - ptr. if (LHS.get()->getType()->isAnyPointerType()) { QualType lpointee = LHS.get()->getType()->getPointeeType(); // Diagnose bad cases where we step over interface counts. if (LHS.get()->getType()->isObjCObjectPointerType() && checkArithmeticOnObjCPointer(*this, Loc, LHS.get())) return QualType(); // The result type of a pointer-int computation is the pointer type. if (RHS.get()->getType()->isIntegerType()) { // Subtracting from a null pointer should produce a warning. // The last argument to the diagnose call says this doesn't match the // GNU int-to-pointer idiom. if (LHS.get()->IgnoreParenCasts()->isNullPointerConstant(Context, Expr::NPC_ValueDependentIsNotNull)) { // In C++ adding zero to a null pointer is defined. Expr::EvalResult KnownVal; if (!getLangOpts().CPlusPlus || (!RHS.get()->isValueDependent() && (!RHS.get()->EvaluateAsInt(KnownVal, Context) || KnownVal.Val.getInt() != 0))) { diagnoseArithmeticOnNullPointer(*this, Loc, LHS.get(), false); } } if (!checkArithmeticOpPointerOperand(*this, Loc, LHS.get())) return QualType(); // Check array bounds for pointer arithemtic CheckArrayAccess(LHS.get(), RHS.get(), /*ArraySubscriptExpr*/nullptr, /*AllowOnePastEnd*/true, /*IndexNegated*/true); if (CompLHSTy) *CompLHSTy = LHS.get()->getType(); return LHS.get()->getType(); } // Handle pointer-pointer subtractions. if (const PointerType *RHSPTy = RHS.get()->getType()->getAs()) { QualType rpointee = RHSPTy->getPointeeType(); if (getLangOpts().CPlusPlus) { // Pointee types must be the same: C++ [expr.add] if (!Context.hasSameUnqualifiedType(lpointee, rpointee)) { diagnosePointerIncompatibility(*this, Loc, LHS.get(), RHS.get()); } } else { // Pointee types must be compatible C99 6.5.6p3 if (!Context.typesAreCompatible( Context.getCanonicalType(lpointee).getUnqualifiedType(), Context.getCanonicalType(rpointee).getUnqualifiedType())) { diagnosePointerIncompatibility(*this, Loc, LHS.get(), RHS.get()); return QualType(); } } if (!checkArithmeticBinOpPointerOperands(*this, Loc, LHS.get(), RHS.get())) return QualType(); // FIXME: Add warnings for nullptr - ptr. // The pointee type may have zero size. As an extension, a structure or // union may have zero size or an array may have zero length. In this // case subtraction does not make sense. if (!rpointee->isVoidType() && !rpointee->isFunctionType()) { CharUnits ElementSize = Context.getTypeSizeInChars(rpointee); if (ElementSize.isZero()) { Diag(Loc,diag::warn_sub_ptr_zero_size_types) << rpointee.getUnqualifiedType() << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); } } if (CompLHSTy) *CompLHSTy = LHS.get()->getType(); return Context.getPointerDiffType(); } } return InvalidOperands(Loc, LHS, RHS); } static bool isScopedEnumerationType(QualType T) { if (const EnumType *ET = T->getAs()) return ET->getDecl()->isScoped(); return false; } static void DiagnoseBadShiftValues(Sema& S, ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, BinaryOperatorKind Opc, QualType LHSType) { // OpenCL 6.3j: shift values are effectively % word size of LHS (more defined), // so skip remaining warnings as we don't want to modify values within Sema. if (S.getLangOpts().OpenCL) return; // Check right/shifter operand Expr::EvalResult RHSResult; if (RHS.get()->isValueDependent() || !RHS.get()->EvaluateAsInt(RHSResult, S.Context)) return; llvm::APSInt Right = RHSResult.Val.getInt(); if (Right.isNegative()) { S.DiagRuntimeBehavior(Loc, RHS.get(), S.PDiag(diag::warn_shift_negative) << RHS.get()->getSourceRange()); return; } QualType LHSExprType = LHS.get()->getType(); uint64_t LeftSize = S.Context.getTypeSize(LHSExprType); if (LHSExprType->isExtIntType()) LeftSize = S.Context.getIntWidth(LHSExprType); else if (LHSExprType->isFixedPointType()) { auto FXSema = S.Context.getFixedPointSemantics(LHSExprType); LeftSize = FXSema.getWidth() - (unsigned)FXSema.hasUnsignedPadding(); } llvm::APInt LeftBits(Right.getBitWidth(), LeftSize); if (Right.uge(LeftBits)) { S.DiagRuntimeBehavior(Loc, RHS.get(), S.PDiag(diag::warn_shift_gt_typewidth) << RHS.get()->getSourceRange()); return; } // FIXME: We probably need to handle fixed point types specially here. if (Opc != BO_Shl || LHSExprType->isFixedPointType()) return; // When left shifting an ICE which is signed, we can check for overflow which // according to C++ standards prior to C++2a has undefined behavior // ([expr.shift] 5.8/2). Unsigned integers have defined behavior modulo one // more than the maximum value representable in the result type, so never // warn for those. (FIXME: Unsigned left-shift overflow in a constant // expression is still probably a bug.) Expr::EvalResult LHSResult; if (LHS.get()->isValueDependent() || LHSType->hasUnsignedIntegerRepresentation() || !LHS.get()->EvaluateAsInt(LHSResult, S.Context)) return; llvm::APSInt Left = LHSResult.Val.getInt(); // If LHS does not have a signed type and non-negative value // then, the behavior is undefined before C++2a. Warn about it. if (Left.isNegative() && !S.getLangOpts().isSignedOverflowDefined() && !S.getLangOpts().CPlusPlus20) { S.DiagRuntimeBehavior(Loc, LHS.get(), S.PDiag(diag::warn_shift_lhs_negative) << LHS.get()->getSourceRange()); return; } llvm::APInt ResultBits = static_cast(Right) + Left.getMinSignedBits(); if (LeftBits.uge(ResultBits)) return; llvm::APSInt Result = Left.extend(ResultBits.getLimitedValue()); Result = Result.shl(Right); // Print the bit representation of the signed integer as an unsigned // hexadecimal number. SmallString<40> HexResult; Result.toString(HexResult, 16, /*Signed =*/false, /*Literal =*/true); // If we are only missing a sign bit, this is less likely to result in actual // bugs -- if the result is cast back to an unsigned type, it will have the // expected value. Thus we place this behind a different warning that can be // turned off separately if needed. if (LeftBits == ResultBits - 1) { S.Diag(Loc, diag::warn_shift_result_sets_sign_bit) << HexResult << LHSType << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return; } S.Diag(Loc, diag::warn_shift_result_gt_typewidth) << HexResult.str() << Result.getMinSignedBits() << LHSType << Left.getBitWidth() << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); } /// Return the resulting type when a vector is shifted /// by a scalar or vector shift amount. static QualType checkVectorShift(Sema &S, ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, bool IsCompAssign) { // OpenCL v1.1 s6.3.j says RHS can be a vector only if LHS is a vector. if ((S.LangOpts.OpenCL || S.LangOpts.ZVector) && !LHS.get()->getType()->isVectorType()) { S.Diag(Loc, diag::err_shift_rhs_only_vector) << RHS.get()->getType() << LHS.get()->getType() << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } if (!IsCompAssign) { LHS = S.UsualUnaryConversions(LHS.get()); if (LHS.isInvalid()) return QualType(); } RHS = S.UsualUnaryConversions(RHS.get()); if (RHS.isInvalid()) return QualType(); QualType LHSType = LHS.get()->getType(); // Note that LHS might be a scalar because the routine calls not only in // OpenCL case. const VectorType *LHSVecTy = LHSType->getAs(); QualType LHSEleType = LHSVecTy ? LHSVecTy->getElementType() : LHSType; // Note that RHS might not be a vector. QualType RHSType = RHS.get()->getType(); const VectorType *RHSVecTy = RHSType->getAs(); QualType RHSEleType = RHSVecTy ? RHSVecTy->getElementType() : RHSType; // The operands need to be integers. if (!LHSEleType->isIntegerType()) { S.Diag(Loc, diag::err_typecheck_expect_int) << LHS.get()->getType() << LHS.get()->getSourceRange(); return QualType(); } if (!RHSEleType->isIntegerType()) { S.Diag(Loc, diag::err_typecheck_expect_int) << RHS.get()->getType() << RHS.get()->getSourceRange(); return QualType(); } if (!LHSVecTy) { assert(RHSVecTy); if (IsCompAssign) return RHSType; if (LHSEleType != RHSEleType) { LHS = S.ImpCastExprToType(LHS.get(),RHSEleType, CK_IntegralCast); LHSEleType = RHSEleType; } QualType VecTy = S.Context.getExtVectorType(LHSEleType, RHSVecTy->getNumElements()); LHS = S.ImpCastExprToType(LHS.get(), VecTy, CK_VectorSplat); LHSType = VecTy; } else if (RHSVecTy) { // OpenCL v1.1 s6.3.j says that for vector types, the operators // are applied component-wise. So if RHS is a vector, then ensure // that the number of elements is the same as LHS... if (RHSVecTy->getNumElements() != LHSVecTy->getNumElements()) { S.Diag(Loc, diag::err_typecheck_vector_lengths_not_equal) << LHS.get()->getType() << RHS.get()->getType() << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); return QualType(); } if (!S.LangOpts.OpenCL && !S.LangOpts.ZVector) { const BuiltinType *LHSBT = LHSEleType->getAs(); const BuiltinType *RHSBT = RHSEleType->getAs(); if (LHSBT != RHSBT && S.Context.getTypeSize(LHSBT) != S.Context.getTypeSize(RHSBT)) { S.Diag(Loc, diag::warn_typecheck_vector_element_sizes_not_equal) << LHS.get()->getType() << RHS.get()->getType() << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); } } } else { // ...else expand RHS to match the number of elements in LHS. QualType VecTy = S.Context.getExtVectorType(RHSEleType, LHSVecTy->getNumElements()); RHS = S.ImpCastExprToType(RHS.get(), VecTy, CK_VectorSplat); } return LHSType; } // C99 6.5.7 QualType Sema::CheckShiftOperands(ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, BinaryOperatorKind Opc, bool IsCompAssign) { checkArithmeticNull(*this, LHS, RHS, Loc, /*IsCompare=*/false); // Vector shifts promote their scalar inputs to vector type. if (LHS.get()->getType()->isVectorType() || RHS.get()->getType()->isVectorType()) { if (LangOpts.ZVector) { // The shift operators for the z vector extensions work basically // like general shifts, except that neither the LHS nor the RHS is // allowed to be a "vector bool". if (auto LHSVecType = LHS.get()->getType()->getAs()) if (LHSVecType->getVectorKind() == VectorType::AltiVecBool) return InvalidOperands(Loc, LHS, RHS); if (auto RHSVecType = RHS.get()->getType()->getAs()) if (RHSVecType->getVectorKind() == VectorType::AltiVecBool) return InvalidOperands(Loc, LHS, RHS); } return checkVectorShift(*this, LHS, RHS, Loc, IsCompAssign); } // Shifts don't perform usual arithmetic conversions, they just do integer // promotions on each operand. C99 6.5.7p3 // For the LHS, do usual unary conversions, but then reset them away // if this is a compound assignment. ExprResult OldLHS = LHS; LHS = UsualUnaryConversions(LHS.get()); if (LHS.isInvalid()) return QualType(); QualType LHSType = LHS.get()->getType(); if (IsCompAssign) LHS = OldLHS; // The RHS is simpler. RHS = UsualUnaryConversions(RHS.get()); if (RHS.isInvalid()) return QualType(); QualType RHSType = RHS.get()->getType(); // C99 6.5.7p2: Each of the operands shall have integer type. // Embedded-C 4.1.6.2.2: The LHS may also be fixed-point. if ((!LHSType->isFixedPointOrIntegerType() && !LHSType->hasIntegerRepresentation()) || !RHSType->hasIntegerRepresentation()) return InvalidOperands(Loc, LHS, RHS); // C++0x: Don't allow scoped enums. FIXME: Use something better than // hasIntegerRepresentation() above instead of this. if (isScopedEnumerationType(LHSType) || isScopedEnumerationType(RHSType)) { return InvalidOperands(Loc, LHS, RHS); } // Sanity-check shift operands DiagnoseBadShiftValues(*this, LHS, RHS, Loc, Opc, LHSType); // "The type of the result is that of the promoted left operand." return LHSType; } /// Diagnose bad pointer comparisons. static void diagnoseDistinctPointerComparison(Sema &S, SourceLocation Loc, ExprResult &LHS, ExprResult &RHS, bool IsError) { S.Diag(Loc, IsError ? diag::err_typecheck_comparison_of_distinct_pointers : diag::ext_typecheck_comparison_of_distinct_pointers) << LHS.get()->getType() << RHS.get()->getType() << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); } /// Returns false if the pointers are converted to a composite type, /// true otherwise. static bool convertPointersToCompositeType(Sema &S, SourceLocation Loc, ExprResult &LHS, ExprResult &RHS) { // C++ [expr.rel]p2: // [...] Pointer conversions (4.10) and qualification // conversions (4.4) are performed on pointer operands (or on // a pointer operand and a null pointer constant) to bring // them to their composite pointer type. [...] // // C++ [expr.eq]p1 uses the same notion for (in)equality // comparisons of pointers. QualType LHSType = LHS.get()->getType(); QualType RHSType = RHS.get()->getType(); assert(LHSType->isPointerType() || RHSType->isPointerType() || LHSType->isMemberPointerType() || RHSType->isMemberPointerType()); QualType T = S.FindCompositePointerType(Loc, LHS, RHS); if (T.isNull()) { if ((LHSType->isAnyPointerType() || LHSType->isMemberPointerType()) && (RHSType->isAnyPointerType() || RHSType->isMemberPointerType())) diagnoseDistinctPointerComparison(S, Loc, LHS, RHS, /*isError*/true); else S.InvalidOperands(Loc, LHS, RHS); return true; } return false; } static void diagnoseFunctionPointerToVoidComparison(Sema &S, SourceLocation Loc, ExprResult &LHS, ExprResult &RHS, bool IsError) { S.Diag(Loc, IsError ? diag::err_typecheck_comparison_of_fptr_to_void : diag::ext_typecheck_comparison_of_fptr_to_void) << LHS.get()->getType() << RHS.get()->getType() << LHS.get()->getSourceRange() << RHS.get()->getSourceRange(); } static bool isObjCObjectLiteral(ExprResult &E) { switch (E.get()->IgnoreParenImpCasts()->getStmtClass()) { case Stmt::ObjCArrayLiteralClass: case Stmt::ObjCDictionaryLiteralClass: case Stmt::ObjCStringLiteralClass: case Stmt::ObjCBoxedExprClass: return true; default: // Note that ObjCBoolLiteral is NOT an object literal! return false; } } static bool hasIsEqualMethod(Sema &S, const Expr *LHS, const Expr *RHS) { const ObjCObjectPointerType *Type = LHS->getType()->getAs(); // If this is not actually an Objective-C object, bail out. if (!Type) return false; // Get the LHS object's interface type. QualType InterfaceType = Type->getPointeeType(); // If the RHS isn't an Objective-C object, bail out. if (!RHS->getType()->isObjCObjectPointerType()) return false; // Try to find the -isEqual: method. Selector IsEqualSel = S.NSAPIObj->getIsEqualSelector(); ObjCMethodDecl *Method = S.LookupMethodInObjectType(IsEqualSel, InterfaceType, /*IsInstance=*/true); if (!Method) { if (Type->isObjCIdType()) { // For 'id', just check the global pool. Method = S.LookupInstanceMethodInGlobalPool(IsEqualSel, SourceRange(), /*receiverId=*/true); } else { // Check protocols. Method = S.LookupMethodInQualifiedType(IsEqualSel, Type, /*IsInstance=*/true); } } if (!Method) return false; QualType T = Method->parameters()[0]->getType(); if (!T->isObjCObjectPointerType()) return false; QualType R = Method->getReturnType(); if (!R->isScalarType()) return false; return true; } Sema::ObjCLiteralKind Sema::CheckLiteralKind(Expr *FromE) { FromE = FromE->IgnoreParenImpCasts(); switch (FromE->getStmtClass()) { default: break; case Stmt::ObjCStringLiteralClass: // "string literal" return LK_String; case Stmt::ObjCArrayLiteralClass: // "array literal" return LK_Array; case Stmt::ObjCDictionaryLiteralClass: // "dictionary literal" return LK_Dictionary; case Stmt::BlockExprClass: return LK_Block; case Stmt::ObjCBoxedExprClass: { Expr *Inner = cast(FromE)->getSubExpr()->IgnoreParens(); switch (Inner->getStmtClass()) { case Stmt::IntegerLiteralClass: case Stmt::FloatingLiteralClass: case Stmt::CharacterLiteralClass: case Stmt::ObjCBoolLiteralExprClass: case Stmt::CXXBoolLiteralExprClass: // "numeric literal" return LK_Numeric; case Stmt::ImplicitCastExprClass: { CastKind CK = cast(Inner)->getCastKind(); // Boolean literals can be represented by implicit casts. if (CK == CK_IntegralToBoolean || CK == CK_IntegralCast) return LK_Numeric; break; } default: break; } return LK_Boxed; } } return LK_None; } static void diagnoseObjCLiteralComparison(Sema &S, SourceLocation Loc, ExprResult &LHS, ExprResult &RHS, BinaryOperator::Opcode Opc){ Expr *Literal; Expr *Other; if (isObjCObjectLiteral(LHS)) { Literal = LHS.get(); Other = RHS.get(); } else { Literal = RHS.get(); Other = LHS.get(); } // Don't warn on comparisons against nil. Other = Other->IgnoreParenCasts(); if (Other->isNullPointerConstant(S.getASTContext(), Expr::NPC_ValueDependentIsNotNull)) return; // This should be kept in sync with warn_objc_literal_comparison. // LK_String should always be after the other literals, since it has its own // warning flag. Sema::ObjCLiteralKind LiteralKind = S.CheckLiteralKind(Literal); assert(LiteralKind != Sema::LK_Block); if (LiteralKind == Sema::LK_None) { llvm_unreachable("Unknown Objective-C object literal kind"); } if (LiteralKind == Sema::LK_String) S.Diag(Loc, diag::warn_objc_string_literal_comparison) << Literal->getSourceRange(); else S.Diag(Loc, diag::warn_objc_literal_comparison) << LiteralKind << Literal->getSourceRange(); if (BinaryOperator::isEqualityOp(Opc) && hasIsEqualMethod(S, LHS.get(), RHS.get())) { SourceLocation Start = LHS.get()->getBeginLoc(); SourceLocation End = S.getLocForEndOfToken(RHS.get()->getEndLoc()); CharSourceRange OpRange = CharSourceRange::getCharRange(Loc, S.getLocForEndOfToken(Loc)); S.Diag(Loc, diag::note_objc_literal_comparison_isequal) << FixItHint::CreateInsertion(Start, Opc == BO_EQ ? "[" : "![") << FixItHint::CreateReplacement(OpRange, " isEqual:") << FixItHint::CreateInsertion(End, "]"); } } /// Warns on !x < y, !x & y where !(x < y), !(x & y) was probably intended. static void diagnoseLogicalNotOnLHSofCheck(Sema &S, ExprResult &LHS, ExprResult &RHS, SourceLocation Loc, BinaryOperatorKind Opc) { // Check that left hand side is !something. UnaryOperator *UO = dyn_cast(LHS.get()->IgnoreImpCasts()); if (!UO || UO->getOpcode() != UO_LNot) return; // Only check if the right hand side is non-bool arithmetic type. if (RHS.get()->isKnownToHaveBooleanValue()) return; // Make sure that the something in !something is not bool. Expr *SubExpr = UO->getSubExpr()->IgnoreImpCasts(); if (SubExpr->isKnownToHaveBooleanValue()) return; // Emit warning. bool IsBitwiseOp = Opc == BO_And || Opc == BO_Or || Opc == BO_Xor; S.Diag(UO->getOperatorLoc(), diag::warn_logical_not_on_lhs_of_check) << Loc << IsBitwiseOp; // First note suggest !(x < y) SourceLocation FirstOpen = SubExpr->getBeginLoc(); SourceLocation FirstClose = RHS.get()->getEndLoc(); FirstClose = S.getLocForEndOfToken(FirstClose); if (FirstClose.isInvalid()) FirstOpen = SourceLocation(); S.Diag(UO->getOperatorLoc(), diag::note_logical_not_fix) << IsBitwiseOp << FixItHint::CreateInsertion(FirstOpen, "(") << FixItHint::CreateInsertion(FirstClose, ")"); // Second note suggests (!x) < y SourceLocation SecondOpen = LHS.get()->getBeginLoc(); SourceLocation SecondClose = LHS.get()->getEndLoc(); SecondClose = S.getLocForEndOfToken(SecondClose); if (SecondClose.isInvalid()) SecondOpen = SourceLocation(); S.Diag(UO->getOperatorLoc(), diag::note_logical_not_silence_with_parens) << FixItHint::CreateInsertion(SecondOpen, "(") << FixItHint::CreateInsertion(SecondClose, ")"); } // Returns true if E refers to a non-weak array. static bool checkForArray(const Expr *E) { const ValueDecl *D = nullptr; if (const DeclRefExpr *DR = dyn_cast(E)) { D = DR->getDecl(); } else if (const MemberExpr *Mem = dyn_cast(E)) { if (Mem->isImplicitAccess()) D = Mem->getMemberDecl(); } if (!D) return false; return D->getType()->isArrayType() && !D->isWeak(); } /// Diagnose some forms of syntactically-obvious tautological comparison. static void diagnoseTautologicalComparison(Sema &S, SourceLocation Loc, Expr *LHS, Expr *RHS, BinaryOperatorKind Opc) { Expr *LHSStripped = LHS->IgnoreParenImpCasts(); Expr *RHSStripped = RHS->IgnoreParenImpCasts(); QualType LHSType = LHS->getType(); QualType RHSType = RHS->getType(); if (LHSType->hasFloatingRepresentation() || (LHSType->isBlockPointerType() && !BinaryOperator::isEqualityOp(Opc)) || S.inTemplateInstantiation()) return; // Comparisons between two array types are ill-formed for operator<=>, so // we shouldn't emit any additional warnings about it. if (Opc == BO_Cmp && LHSType->isArrayType() && RHSType->isArrayType()) return; // For non-floating point types, check for self-comparisons of the form // x == x, x != x, x < x, etc. These always evaluate to a constant, and // often indicate logic errors in the program. // // NOTE: Don't warn about comparison expressions resulting from macro // expansion. Also don't warn about comparisons which are only self // comparisons within a template instantiation. The warnings should catch // obvious cases in the definition of the template anyways. The idea is to // warn when the typed comparison operator will always evaluate to the same // result. // Used for indexing into %select in warn_comparison_always enum { AlwaysConstant, AlwaysTrue, AlwaysFalse, AlwaysEqual, // std::strong_ordering::equal from operator<=> }; // C++2a [depr.array.comp]: // Equality and relational comparisons ([expr.eq], [expr.rel]) between two // operands of array type are deprecated. if (S.getLangOpts().CPlusPlus20 && LHSStripped->getType()->isArrayType() && RHSStripped->getType()->isArrayType()) { S.Diag(Loc, diag::warn_depr_array_comparison) << LHS->getSourceRange() << RHS->getSourceRange() << LHSStripped->getType() << RHSStripped->getType(); // Carry on to produce the tautological comparison warning, if this // expression is potentially-evaluated, we can resolve the array to a // non-weak declaration, and so on. } if (!LHS->getBeginLoc().isMacroID() && !RHS->getBeginLoc().isMacroID()) { if (Expr::isSameComparisonOperand(LHS, RHS)) { unsigned Result; switch (Opc) { case BO_EQ: case BO_LE: case BO_GE: Result = AlwaysTrue; break; case BO_NE: case BO_LT: case BO_GT: Result = AlwaysFalse; break; case BO_Cmp: Result = AlwaysEqual; break; default: Result = AlwaysConstant; break; } S.DiagRuntimeBehavior(Loc, nullptr, S.PDiag(diag::warn_comparison_always) << 0 /*self-comparison*/ << Result); } else if (checkForArray(LHSStripped) && checkForArray(RHSStripped)) { // What is it always going to evaluate to? unsigned Result; switch (Opc) { case BO_EQ: // e.g. array1 == array2 Result = AlwaysFalse; break; case BO_NE: // e.g. array1 != array2 Result = AlwaysTrue; break; default: // e.g. array1 <= array2 // The best we can say is 'a constant' Result = AlwaysConstant; break; } S.DiagRuntimeBehavior(Loc, nullptr, S.PDiag(diag::warn_comparison_always) << 1 /*array comparison*/ << Result); } } if (isa(LHSStripped)) LHSStripped = LHSStripped->IgnoreParenCasts(); if (isa(RHSStripped)) RHSStripped = RHSStripped->IgnoreParenCasts(); // Warn about comparisons against a string constant (unless the other // operand is null); the user probably wants string comparison function. Expr *LiteralString = nullptr; Expr *LiteralStringStripped = nullptr; if ((isa(LHSStripped) || isa(LHSStripped)) && !RHSStripped->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNull)) { LiteralString = LHS; LiteralStringStripped = LHSStripped; } else if ((isa(RHSStripped) || isa(RHSStripped)) && !LHSStripped->isNullPointerConstant(S.Context, Expr::NPC_ValueDependentIsNull)) { LiteralString = RHS; LiteralStringStripped = RHSStripped; } if (LiteralString) { S.DiagRuntimeBehavior(Loc, nullptr, S.PDiag(diag::warn_stringcompare) << isa(LiteralStringStripped) << LiteralString->getSourceRange()); } } static ImplicitConversionKind castKindToImplicitConversionKind(CastKind CK) { switch (CK) { default: { #ifndef NDEBUG llvm::errs() << "unhandled cast kind: " << CastExpr::getCastKindName(CK) << "\n"; #endif llvm_unreachable("unhandled cast kind"); } case CK_UserDefinedConversion: return ICK_Identity; case CK_LValueToRValue: return ICK_Lvalue_To_Rvalue; case CK_ArrayToPointerDecay: return ICK_Array_To_Pointer; case CK_FunctionToPointerDecay: return ICK_Function_To_Pointer; case CK_IntegralCast: return ICK_Integral_Conversion; case CK_FloatingCast: return ICK_Floating_Conversion; case CK_IntegralToFloating: case CK_FloatingToIntegral: return ICK_Floating_Integral; case CK_IntegralComplexCast: case CK_FloatingComplexCast: case CK_FloatingComplexToIntegralComplex: case CK_IntegralComplexToFloatingComplex: return ICK_Complex_Conversion; case CK_FloatingComplexToReal: case CK_FloatingRealToComplex: case CK_IntegralComplexToReal: case CK_IntegralRealToComplex: return ICK_Complex_Real; } } static bool checkThreeWayNarrowingConversion(Sema &S, QualType ToType, Expr *E, QualType FromType, SourceLocation Loc) { // Check for a narrowing implicit conversion. StandardConversionSequence SCS; SCS.setAsIdentityConversion(); SCS.setToType(0, FromType); SCS.setToType(1, ToType); if (const auto *ICE = dyn_cast(E)) SCS.Second = castKindToImplicitConversionKind(ICE->getCastKind()); APValue PreNarrowingValue; QualType PreNarrowingType; swit