Index: clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.cpp =================================================================== --- clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.cpp +++ clang-tools-extra/clang-tidy/bugprone/BranchCloneCheck.cpp @@ -19,6 +19,17 @@ /// Returns true when the statements are Type I clones of each other. static bool areStatementsIdentical(const Stmt *LHS, const Stmt *RHS, const ASTContext &Context) { + if (isa(LHS) && isa(RHS)) { + // If we have errors in expressions, we will be unable + // to accurately profile and compute hashes for each + // of the left and right statements. + const auto *LHSExpr = llvm::cast(LHS); + const auto *RHSExpr = llvm::cast(RHS); + if (LHSExpr->containsErrors() && RHSExpr->containsErrors()) { + return false; + } + } + llvm::FoldingSetNodeID DataLHS, DataRHS; LHS->Profile(DataLHS, Context, false); RHS->Profile(DataRHS, Context, false); Index: clang-tools-extra/docs/ReleaseNotes.rst =================================================================== --- clang-tools-extra/docs/ReleaseNotes.rst +++ clang-tools-extra/docs/ReleaseNotes.rst @@ -150,24 +150,29 @@ Changes in existing checks ^^^^^^^^^^^^^^^^^^^^^^^^^^ -- Fixed nonsensical suggestion of :doc:`altera-struct-pack-align - ` check for empty structs. - -- Fixed some false positives in :doc:`bugprone-infinite-loop - ` involving dependent expressions. +- Expanded :doc:`readability-simplify-boolean-expr + ` to simplify expressions + using DeMorgan's Theorem. - Fixed a crash in :doc:`bugprone-sizeof-expression ` when `sizeof(...)` is compared against a `__int128_t`. -- Made :doc:`cert-oop57-cpp ` more sensitive - by checking for an arbitrary expression in the second argument of ``memset``. +- Fixed a crash in :doc:`llvmlibc-callee-namespace + ` when executing for C++ code + that contain calls to advanced constructs, e.g. overloaded operators. -- Improved :doc:`cppcoreguidelines-prefer-member-initializer - ` check. +- Fixed a crash in :doc:`performance-unnecessary-value-param + ` when the specialization + template has an unnecessary value parameter. Removed the fix for a template. - Fixed an issue when there was already an initializer in the constructor and - the check would try to create another initializer for the same member. +- Fixed a crash in :doc:`readability-const-return-type + ` when a pure virtual function + overrided has a const return type. Removed the fix for a virtual function. + +- Fixed a false positive in :doc:`bugprone-branch-clone + ` when the branches + involve unknown expressions. - Fixed a false positive in :doc:`cppcoreguidelines-virtual-class-destructor ` involving @@ -175,18 +180,6 @@ those cannot be used as base classes, consequently, they can not violate the rule. -- Fixed a crash in :doc:`llvmlibc-callee-namespace - ` when executing for C++ code - that contain calls to advanced constructs, e.g. overloaded operators. - -- Fixed false positives in :doc:`misc-redundant-expression - `: - - - Fixed a false positive involving overloaded comparison operators. - - - Fixed a false positive involving assignments in - conditions. This fixes `Issue 35853 `_. - - Fixed a false positive in :doc:`misc-unused-parameters ` where invalid parameters were implicitly being treated as being unused. @@ -201,28 +194,12 @@ the ``CheckHeaderFile=true`` option if header files of the project only included by C++ source files. -- Improved :doc:`performance-inefficient-vector-operation - ` to work when - the vector is a member of a structure. - -- Fixed a crash in :doc:`readability-const-return-type - ` when a pure virtual function - overrided has a const return type. Removed the fix for a virtual function. - -- Fixed incorrect suggestions for :doc:`readability-container-size-empty - ` when smart pointers are involved. - - Fixed a false positive in :doc:`readability-non-const-parameter ` when the parameter is referenced by an lvalue. -- Expanded :doc:`readability-simplify-boolean-expr - ` to simplify expressions - using DeMorgan's Theorem. - -- Fixed a crash in :doc:`performance-unnecessary-value-param - ` when the specialization - template has an unnecessary value parameter. Removed the fix for a template. +- Fixed an issue when there was already an initializer in the constructor and + the check would try to create another initializer for the same member. - Fixed bugs in :doc:`bugprone-use-after-move `: @@ -233,6 +210,33 @@ - Don't emit an erroneous warning on self-moves. +- Fixed false positives in :doc:`misc-redundant-expression + `: + + - Fixed a false positive involving overloaded comparison operators. + + - Fixed a false positive involving assignments in + conditions. This fixes `Issue 35853 `_. + +- Fixed incorrect suggestions for :doc:`readability-container-size-empty + ` when smart pointers are involved. + +- Fixed nonsensical suggestion of :doc:`altera-struct-pack-align + ` check for empty structs. + +- Fixed some false positives in :doc:`bugprone-infinite-loop + ` involving dependent expressions. + +- Improved :doc:`cppcoreguidelines-prefer-member-initializer + ` check. + +- Improved :doc:`performance-inefficient-vector-operation + ` to work when + the vector is a member of a structure. + +- Made :doc:`cert-oop57-cpp ` more sensitive + by checking for an arbitrary expression in the second argument of ``memset``. + Removed checks ^^^^^^^^^^^^^^ Index: clang-tools-extra/test/clang-tidy/checkers/bugprone/branch-clone-unknown-expr.cpp =================================================================== --- /dev/null +++ clang-tools-extra/test/clang-tidy/checkers/bugprone/branch-clone-unknown-expr.cpp @@ -0,0 +1,9 @@ +// RUN: %check_clang_tidy -fix-errors %s bugprone-branch-clone %t + +int test_unknown_expression() { + if (unknown_expression_1) { // CHECK-MESSAGES: :[[@LINE]]:7: error: use of undeclared identifier 'unknown_expression_1' [clang-diagnostic-error] + function1(unknown_expression_2); // CHECK-MESSAGES: :[[@LINE]]:15: error: use of undeclared identifier 'unknown_expression_2' [clang-diagnostic-error] + } else { + function2(unknown_expression_3); // CHECK-MESSAGES: :[[@LINE]]:15: error: use of undeclared identifier 'unknown_expression_3' [clang-diagnostic-error] + } +}