diff options
Diffstat (limited to 'contrib/llvm-project/clang/lib/Frontend/InitPreprocessor.cpp')
| -rw-r--r-- | contrib/llvm-project/clang/lib/Frontend/InitPreprocessor.cpp | 44 |
1 files changed, 27 insertions, 17 deletions
diff --git a/contrib/llvm-project/clang/lib/Frontend/InitPreprocessor.cpp b/contrib/llvm-project/clang/lib/Frontend/InitPreprocessor.cpp index 8a0ff55e44fc..c273cb96d9b9 100644 --- a/contrib/llvm-project/clang/lib/Frontend/InitPreprocessor.cpp +++ b/contrib/llvm-project/clang/lib/Frontend/InitPreprocessor.cpp @@ -344,13 +344,27 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI, const LangOptions &LangOpts, const FrontendOptions &FEOpts, MacroBuilder &Builder) { + // C++ [cpp.predefined]p1: + // The following macro names shall be defined by the implementation: + + // -- __STDC__ + // [C++] Whether __STDC__ is predefined and if so, what its value is, + // are implementation-defined. + // (Removed in C++20.) if (!LangOpts.MSVCCompat && !LangOpts.TraditionalCPP) Builder.defineMacro("__STDC__"); + // -- __STDC_HOSTED__ + // The integer literal 1 if the implementation is a hosted + // implementation or the integer literal 0 if it is not. if (LangOpts.Freestanding) Builder.defineMacro("__STDC_HOSTED__", "0"); else Builder.defineMacro("__STDC_HOSTED__"); + // -- __STDC_VERSION__ + // [C++] Whether __STDC_VERSION__ is predefined and if so, what its + // value is, are implementation-defined. + // (Removed in C++20.) if (!LangOpts.CPlusPlus) { if (LangOpts.C17) Builder.defineMacro("__STDC_VERSION__", "201710L"); @@ -361,33 +375,29 @@ static void InitializeStandardPredefinedMacros(const TargetInfo &TI, else if (!LangOpts.GNUMode && LangOpts.Digraphs) Builder.defineMacro("__STDC_VERSION__", "199409L"); } else { - // FIXME: Use correct value for C++20. + // -- __cplusplus + // [C++20] The integer literal 202002L. if (LangOpts.CPlusPlus2a) - Builder.defineMacro("__cplusplus", "201707L"); - // C++17 [cpp.predefined]p1: - // The name __cplusplus is defined to the value 201703L when compiling a - // C++ translation unit. + Builder.defineMacro("__cplusplus", "202002L"); + // [C++17] The integer literal 201703L. else if (LangOpts.CPlusPlus17) Builder.defineMacro("__cplusplus", "201703L"); - // C++1y [cpp.predefined]p1: - // The name __cplusplus is defined to the value 201402L when compiling a - // C++ translation unit. + // [C++14] The name __cplusplus is defined to the value 201402L when + // compiling a C++ translation unit. else if (LangOpts.CPlusPlus14) Builder.defineMacro("__cplusplus", "201402L"); - // C++11 [cpp.predefined]p1: - // The name __cplusplus is defined to the value 201103L when compiling a - // C++ translation unit. + // [C++11] The name __cplusplus is defined to the value 201103L when + // compiling a C++ translation unit. else if (LangOpts.CPlusPlus11) Builder.defineMacro("__cplusplus", "201103L"); - // C++03 [cpp.predefined]p1: - // The name __cplusplus is defined to the value 199711L when compiling a - // C++ translation unit. + // [C++03] The name __cplusplus is defined to the value 199711L when + // compiling a C++ translation unit. else Builder.defineMacro("__cplusplus", "199711L"); - // C++1z [cpp.predefined]p1: - // An integer literal of type std::size_t whose value is the alignment - // guaranteed by a call to operator new(std::size_t) + // -- __STDCPP_DEFAULT_NEW_ALIGNMENT__ + // [C++17] An integer literal of type std::size_t whose value is the + // alignment guaranteed by a call to operator new(std::size_t) // // We provide this in all language modes, since it seems generally useful. Builder.defineMacro("__STDCPP_DEFAULT_NEW_ALIGNMENT__", |