Index: include/clang/Basic/DiagnosticSemaKinds.td =================================================================== --- include/clang/Basic/DiagnosticSemaKinds.td +++ include/clang/Basic/DiagnosticSemaKinds.td @@ -192,7 +192,9 @@ "flexible array initialization is a GNU extension">, InGroup; // Declarations. -def ext_duplicate_declspec : ExtWarn<"duplicate '%0' declaration specifier">, +def ext_duplicate_declspec : Extension<"duplicate '%0' declaration specifier">, + InGroup; +def extwarn_duplicate_declspec : ExtWarn<"duplicate '%0' declaration specifier">, InGroup; def warn_duplicate_declspec : Warning<"duplicate '%0' declaration specifier">, InGroup; Index: lib/Parse/ParseDecl.cpp =================================================================== --- lib/Parse/ParseDecl.cpp +++ lib/Parse/ParseDecl.cpp @@ -3838,7 +3838,8 @@ assert(PrevSpec && "Method did not return previous specifier!"); assert(DiagID); - if (DiagID == diag::ext_duplicate_declspec) + if (DiagID == diag::ext_duplicate_declspec || + DiagID == diag::extwarn_duplicate_declspec) Diag(Tok, DiagID) << PrevSpec << FixItHint::CreateRemoval(Tok.getLocation()); else if (DiagID == diag::err_opencl_unknown_type_specifier) { Index: lib/Sema/DeclSpec.cpp =================================================================== --- lib/Sema/DeclSpec.cpp +++ lib/Sema/DeclSpec.cpp @@ -438,8 +438,8 @@ if (TNew != TPrev) DiagID = diag::err_invalid_decl_spec_combination; else - DiagID = IsExtension ? diag::ext_duplicate_declspec : - diag::warn_duplicate_declspec; + DiagID = IsExtension ? diag::ext_duplicate_declspec + : diag::extwarn_duplicate_declspec; return true; } @@ -608,7 +608,8 @@ !(SCS_extern_in_linkage_spec && StorageClassSpec == SCS_extern && SC == SCS_typedef)) - return BadSpecifier(SC, (SCS)StorageClassSpec, PrevSpec, DiagID); + return BadSpecifier(SC, (SCS)StorageClassSpec, PrevSpec, DiagID, + /*IsExtension=*/false); } StorageClassSpec = SC; StorageClassSpecLoc = Loc; @@ -850,14 +851,11 @@ bool DeclSpec::SetTypeQual(TQ T, SourceLocation Loc, const char *&PrevSpec, unsigned &DiagID, const LangOptions &Lang) { - // Duplicates are permitted in C99 onwards, but are not permitted in C89 or - // C++. However, since this is likely not what the user intended, we will - // always warn. We do not need to set the qualifier's location since we - // already have it. - if (TypeQualifiers & T) { - bool IsExtension = true; - if (Lang.C99) - IsExtension = false; + // Duplicates are permitted in C99 onwards, but are not permitted in C++. In + // C90, they are a warning if -pedantic. We do not need to set the + // qualifier's location since we already have it. + if (TypeQualifiers & T && !Lang.C99) { + bool IsExtension = !Lang.CPlusPlus; return BadSpecifier(T, T, PrevSpec, DiagID, IsExtension); } TypeQualifiers |= T; @@ -967,7 +965,7 @@ unsigned &DiagID) { if (isModulePrivateSpecified()) { PrevSpec = "__module_private__"; - DiagID = diag::ext_duplicate_declspec; + DiagID = diag::extwarn_duplicate_declspec; return true; } Index: lib/Sema/SemaType.cpp =================================================================== --- lib/Sema/SemaType.cpp +++ lib/Sema/SemaType.cpp @@ -1679,8 +1679,12 @@ // C90 6.5.3 constraints: "The same type qualifier shall not appear more // than once in the same specifier-list or qualifier-list, either directly // or via one or more typedefs." - if (!S.getLangOpts().C99 && !S.getLangOpts().CPlusPlus - && TypeQuals & Result.getCVRQualifiers()) { + // + // C90 and GNU89 do not warn if the TST is from a typedef unless -pedantic + // was set. GNU89 additionally does not warn if the TST is from a typeof + // expression unless -pedantic was set. + if (!S.getLangOpts().C99 && !S.getLangOpts().CPlusPlus && + TypeQuals & Result.getCVRQualifiers()) { if (TypeQuals & DeclSpec::TQ_const && Result.isConstQualified()) { S.Diag(DS.getConstSpecLoc(), diag::ext_duplicate_declspec) << "const"; Index: test/FixIt/fixit-eof-space.c =================================================================== --- test/FixIt/fixit-eof-space.c +++ test/FixIt/fixit-eof-space.c @@ -1,4 +1,4 @@ -// RUN: not %clang_cc1 %s -fsyntax-only -fdiagnostics-parseable-fixits 2>&1 | FileCheck %s +// RUN: not %clang_cc1 %s -fsyntax-only -fdiagnostics-parseable-fixits -std=c90 -pedantic 2>&1 | FileCheck %s // vim: set binary noeol: // This file intentionally ends without a \n on the last line. Make sure your Index: test/FixIt/fixit.c =================================================================== --- test/FixIt/fixit.c +++ test/FixIt/fixit.c @@ -46,9 +46,6 @@ return x; } -// CHECK: const typedef int int_t; -const typedef typedef int int_t; // expected-warning {{duplicate 'typedef'}} - // enum Color { Red // expected-error{{missing ',' between enumerators}} @@ -56,6 +53,9 @@ Blue, }; +// CHECK: const typedef int int_t; +const typedef typedef int int_t; // expected-warning {{duplicate 'typedef'}} + // rdar://9295072 struct test_struct { // CHECK: struct test_struct *struct_ptr; Index: test/Parser/atomic.c =================================================================== --- test/Parser/atomic.c +++ test/Parser/atomic.c @@ -2,7 +2,6 @@ typedef _Atomic(int) atomic_int; typedef _Atomic int atomic_int; -typedef _Atomic _Atomic _Atomic(int) atomic_int; // expected-warning {{duplicate '_Atomic' declaration specifier}} typedef const int const_int; Index: test/Sema/declspec.c =================================================================== --- test/Sema/declspec.c +++ test/Sema/declspec.c @@ -36,16 +36,3 @@ struct test3s { } // expected-error {{expected ';' after struct}} typedef int test3g; - -// PR8264 -const const int pr8264_1 = 0; // expected-warning {{duplicate 'const' declaration specifier}} -volatile volatile int pr8264_2; // expected-warning {{duplicate 'volatile' declaration specifier}} -char * restrict restrict pr8264_3; // expected-warning {{duplicate 'restrict' declaration specifier}} - -extern extern int pr8264_4; // expected-warning {{duplicate 'extern' declaration specifier}} -void pr8264_5() { - register register int x; // expected-warning {{duplicate 'register' declaration specifier}} -} - -inline inline void pr8264_6() {} // expected-warning {{duplicate 'inline' declaration specifier}} -_Noreturn _Noreturn void pr8264_7(); // expected-warning {{duplicate '_Noreturn' declaration specifier}} Index: test/Sema/dupl-declspec.c =================================================================== --- /dev/null +++ test/Sema/dupl-declspec.c @@ -0,0 +1,242 @@ +/* +RUN: not %clang_cc1 %s -std=c89 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C89 %s +RUN: not %clang_cc1 %s -std=c89 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C89-PEDANTIC %s +RUN: not %clang_cc1 %s -std=c99 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C99 %s +RUN: not %clang_cc1 %s -std=c99 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C99-PEDANTIC %s +RUN: not %clang_cc1 %s -std=c11 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C11 %s +RUN: not %clang_cc1 %s -std=c11 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C11-PEDANTIC %s +RUN: not %clang_cc1 %s -std=c17 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C17 %s +RUN: not %clang_cc1 %s -std=c17 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-C17-PEDANTIC %s + +RUN: not %clang_cc1 %s -std=gnu89 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU89 -allow-empty %s +RUN: not %clang_cc1 %s -std=gnu89 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU89-PEDANTIC %s +RUN: %clang_cc1 %s -std=gnu99 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU99 -allow-empty %s +RUN: %clang_cc1 %s -std=gnu99 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU99-PEDANTIC %s +RUN: %clang_cc1 %s -std=gnu11 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU11 -allow-empty %s +RUN: %clang_cc1 %s -std=gnu11 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU11-PEDANTIC %s +RUN: %clang_cc1 %s -std=gnu17 -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU17 -allow-empty %s +RUN: %clang_cc1 %s -std=gnu17 -pedantic -fsyntax-only 2>&1 | FileCheck -check-prefix=CHECK-GNU17-PEDANTIC %s +*/ + +const const int pr8264_1; +/* +CHECK-C89-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-C89-PEDANTIC: 21:7: warning: duplicate 'const' declaration specifier + ^ NOTE: special case +CHECK-C99-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-C99-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-C11-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-C11-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-C17-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-C17-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier + +CHECK-GNU89-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-GNU89-PEDANTIC: 21:7: warning: duplicate 'const' declaration specifier + ^ NOTE: special case +CHECK-GNU99-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-GNU99-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-GNU11-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-GNU11-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-GNU17-NOT: 21:7: warning: duplicate 'const' declaration specifier +CHECK-GNU17-PEDANTIC-NOT: 21:7: warning: duplicate 'const' declaration specifier +*/ + +typedef const int t; +const t c_i; +/* +CHECK-C89-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-C89-PEDANTIC: 45:1: warning: duplicate 'const' declaration specifier + ^ NOTE: special case +CHECK-C99-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-C99-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-C11-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-C11-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-C17-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-C17-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier + +CHECK-GNU89-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-GNU89-PEDANTIC: 45:1: warning: duplicate 'const' declaration specifier + ^ NOTE: special case +CHECK-GNU99-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-GNU99-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-GNU11-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-GNU11-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-GNU17-NOT: 45:1: warning: duplicate 'const' declaration specifier +CHECK-GNU17-PEDANTIC-NOT: 45:1: warning: duplicate 'const' declaration specifier +*/ + +const int c_i2; +const typeof(pr8264_1) c_i4; +/* +CHECK-C89-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-C89-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-C99-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-C99-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-C11-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-C11-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-C17-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-C17-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier + +CHECK-GNU89-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-GNU89-PEDANTIC: 69:1: warning: duplicate 'const' declaration specifier + ^ NOTE: special case +CHECK-GNU99-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-GNU99-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-GNU11-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-GNU11-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-GNU17-NOT: 69:1: warning: duplicate 'const' declaration specifier +CHECK-GNU17-PEDANTIC-NOT: 69:1: warning: duplicate 'const' declaration specifier +*/ + +volatile volatile int pr8264_2; +/* +CHECK-C89-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-C89-PEDANTIC: 91:10: warning: duplicate 'volatile' declaration specifier + ^ NOTE: special case +CHECK-C99-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-C99-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-C11-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-C11-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-C17-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-C17-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier + +CHECK-GNU89-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-GNU89-PEDANTIC: 91:10: warning: duplicate 'volatile' declaration specifier + ^ NOTE: special case +CHECK-GNU99-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-GNU99-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-GNU11-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-GNU11-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-GNU17-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +CHECK-GNU17-PEDANTIC-NOT: 91:10: warning: duplicate 'volatile' declaration specifier +*/ + +extern extern int pr8264_3; +/* +CHECK-C89: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-C89-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-C99: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-C99-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-C11: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-C11-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-C17: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-C17-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier + +CHECK-GNU89: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-GNU89-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-GNU99: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-GNU99-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-GNU11: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-GNU11-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-GNU17: 114:8: warning: duplicate 'extern' declaration specifier +CHECK-GNU17-PEDANTIC: 114:8: warning: duplicate 'extern' declaration specifier +*/ + +void pr8264_4() { + register register int x; +} +/* +CHECK-C89: 136:12: warning: duplicate 'register' declaration specifier +CHECK-C89-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier +CHECK-C99: 136:12: warning: duplicate 'register' declaration specifier +CHECK-C99-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier +CHECK-C11: 136:12: warning: duplicate 'register' declaration specifier +CHECK-C11-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier +CHECK-C17: 136:12: warning: duplicate 'register' declaration specifier +CHECK-C17-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier + +CHECK-GNU89: 136:12: warning: duplicate 'register' declaration specifier +CHECK-GNU89-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier +CHECK-GNU99: 136:12: warning: duplicate 'register' declaration specifier +CHECK-GNU99-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier +CHECK-GNU11: 136:12: warning: duplicate 'register' declaration specifier +CHECK-GNU11-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier +CHECK-GNU17: 136:12: warning: duplicate 'register' declaration specifier +CHECK-GNU17-PEDANTIC: 136:12: warning: duplicate 'register' declaration specifier +*/ + +inline inline void pr8264_5() {} +/* +CHECK-C89-NOT: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-C89-PEDANTIC-NOT: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-C99: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-C99-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-C11: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-C11-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-C17: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-C17-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier + +CHECK-GNU89: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-GNU89-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-GNU99: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-GNU99-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-GNU11: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-GNU11-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-GNU17: 158:8: warning: duplicate 'inline' declaration specifier +CHECK-GNU17-PEDANTIC: 158:8: warning: duplicate 'inline' declaration specifier +*/ + +_Noreturn _Noreturn void pr8264_6() {} +/* +CHECK-C89: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-C89-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-C99: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-C99-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-C11: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-C11-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-C17: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-C17-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier + +CHECK-GNU89: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-GNU89-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-GNU99: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-GNU99-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-GNU11: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-GNU11-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-GNU17: 179:11: warning: duplicate '_Noreturn' declaration specifier +CHECK-GNU17-PEDANTIC: 179:11: warning: duplicate '_Noreturn' declaration specifier +*/ + +typedef _Atomic _Atomic _Atomic(int) atomic_int; +/* +CHECK-C89-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-C89-PEDANTIC: 200:17: warning: duplicate '_Atomic' declaration specifier + ^ NOTE: special case +CHECK-C99-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-C99-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-C11-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-C11-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-C17-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-C17-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier + +CHECK-GNU89-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-GNU89-PEDANTIC: 200:17: warning: duplicate '_Atomic' declaration specifier + ^ NOTE: special case +CHECK-GNU99-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-GNU99-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-GNU11-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-GNU11-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-GNU17-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +CHECK-GNU17-PEDANTIC-NOT: 200:17: warning: duplicate '_Atomic' declaration specifier +*/ + +char * restrict restrict pr8264_7; +/* +CHECK-C89-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-C89-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-C99-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-C99-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-C11-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-C11-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-C17-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-C17-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier + +CHECK-GNU89-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-GNU89-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-GNU99-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-GNU99-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-GNU11-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-GNU11-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-GNU17-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +CHECK-GNU17-PEDANTIC-NOT: 223:17: warning: duplicate 'restrict' declaration specifier +*/