diff options
Diffstat (limited to 'clang/lib/Frontend/InitPreprocessor.cpp')
| -rw-r--r-- | clang/lib/Frontend/InitPreprocessor.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index 68760e0..e8c8a51 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -432,7 +432,8 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI, // [C++] Whether __STDC__ is predefined and if so, what its value is, // are implementation-defined. // (Removed in C++20.) - if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP) + if ((!LangOpts.MSVCCompat || LangOpts.MSVCEnableStdcMacro) && + !LangOpts.TraditionalCPP) Builder.defineMacro("__STDC__"); // -- __STDC_HOSTED__ // The integer literal 1 if the implementation is a hosted |