From be0d72e8dab1ef90771e5929dcd5064e5980f877 Mon Sep 17 00:00:00 2001 From: anutosh491 Date: Wed, 4 Jun 2025 14:34:05 +0530 Subject: [PATCH 1/2] Ensure clang-repl accepts all C keywords supported in all Clang language modes --- clang/lib/Parse/ParseTentative.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/clang/lib/Parse/ParseTentative.cpp b/clang/lib/Parse/ParseTentative.cpp index 95cee824c40b7..f50bcd8ea90bb 100644 --- a/clang/lib/Parse/ParseTentative.cpp +++ b/clang/lib/Parse/ParseTentative.cpp @@ -1171,6 +1171,7 @@ Parser::isCXXDeclarationSpecifier(ImplicitTypenameContext AllowImplicitTypename, case tok::kw_inline: case tok::kw_virtual: case tok::kw_explicit: + case tok::kw__Noreturn: // Modules case tok::kw___module_private__: @@ -1225,6 +1226,7 @@ Parser::isCXXDeclarationSpecifier(ImplicitTypenameContext AllowImplicitTypename, // GNU case tok::kw_restrict: case tok::kw__Complex: + case tok::kw__Imaginary: case tok::kw___attribute: case tok::kw___auto_type: return TPResult::True; From a80bc5a12d7aa6b5498d6fa9749bcfe50c3acc69 Mon Sep 17 00:00:00 2001 From: anutosh491 Date: Thu, 5 Jun 2025 08:49:30 +0530 Subject: [PATCH 2/2] add tests --- clang/test/Interpreter/disambiguate-decl-stmt.cpp | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/clang/test/Interpreter/disambiguate-decl-stmt.cpp b/clang/test/Interpreter/disambiguate-decl-stmt.cpp index 1f4d5e267288b..f2a59c510f9a2 100644 --- a/clang/test/Interpreter/disambiguate-decl-stmt.cpp +++ b/clang/test/Interpreter/disambiguate-decl-stmt.cpp @@ -102,3 +102,16 @@ __attribute((noreturn)) Attrs2::Attrs2() = default; // Extra semicolon namespace N {}; + +// Test C keywords supported in all language modes. +// https://clang.llvm.org/docs/LanguageExtensions.html#c-keywords-supported-in-all-language-modes + +_Alignas(16) int aligned_var; +int align = _Alignof(double); +_Atomic int atomic_var = 0; +_Complex double complex_val = 1.0 + 2.0i; +_Float16 f = 1.5; +_Thread_local int counter = 0; +_Static_assert(sizeof(int) == 4, "int must be 4 bytes"); +_Imaginary float i = 2.0f; // expected-error {{imaginary types are not supported}} +_Noreturn void noreturn_func() { while (true) {} } \ No newline at end of file