From 5f475b989c8b2ffd35dccbdc77a64ac36601e727 Mon Sep 17 00:00:00 2001 From: Faisal Vali Date: Sun, 16 Jul 2017 00:23:04 +0000 Subject: [c++2a] Add option -std=c++2a to enable support for potential/transitional C++2a features - as usual C++2a implies all the C++'s that came before it. Thank you Aaron for the feedback here: https://reviews.llvm.org/D35454 llvm-svn: 308118 --- clang/lib/Frontend/InitPreprocessor.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'clang/lib/Frontend/InitPreprocessor.cpp') diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index 71420df0..64128df 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -374,10 +374,13 @@ 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. + 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. - if (LangOpts.CPlusPlus1z) + else if (LangOpts.CPlusPlus1z) Builder.defineMacro("__cplusplus", "201703L"); // C++1y [cpp.predefined]p1: // The name __cplusplus is defined to the value 201402L when compiling a -- cgit v1.1