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Provide __GLIBCXX_TYPE_INT_N_0 and __GLIBCXX_BITSIZE_INT_N_0 when in C++ gnu language extensions. 

These are used by libstdc++ <type_traits> for is_integral<__int128>. 
Addresses http://llvm.org/pr23156.

llvm-svn: 276252
This commit is contained in:
Yaron Keren 2016-07-21 07:44:41 +00:00
parent 938c5031ab
commit 7996340d9f
2 changed files with 16 additions and 0 deletions
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5
clang/lib/Frontend/InitPreprocessor.cpp
View File

@ -961,6 +961,11 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
#include "clang/Basic/OpenCLExtensions.def"
}
if (TI.hasInt128Type() && LangOpts.CPlusPlus && LangOpts.GNUMode) {
Builder.defineMacro("__GLIBCXX_TYPE_INT_N_0", "__int128");
Builder.defineMacro("__GLIBCXX_BITSIZE_INT_N_0", "128");
}
// Get other target #defines.
TI.getTargetDefines(LangOpts, Builder);
}

11
clang/test/Frontend/int128.cpp Normal file
View File

@ -0,0 +1,11 @@
// RUN: %clang_cc1 -x c -std=gnu99 -dM -E -triple x86_64-pc-linux %s | FileCheck -check-prefix=NO %s
// RUN: %clang_cc1 -x c++ -std=c++11 -dM -E -triple x86_64-pc-linux %s | FileCheck -check-prefix=NO %s
// RUN: %clang_cc1 -x c++ -std=gnu++11 -dM -E -triple i686-pc-linux %s | FileCheck -check-prefix=NO %s
// RUN: %clang_cc1 -x c++ -std=gnu++11 -dM -E -triple x86_64-pc-linux %s | FileCheck -check-prefix=YES %s
// RUN: %clang_cc1 -x c++ -std=gnu++1y -dM -E -triple x86_64-pc-linux %s | FileCheck -check-prefix=YES %s
// PR23156
// NO-NOT: __GLIBCXX_TYPE_INT_N_0
// NO-NOT: __GLIBCXX_BITSIZE_INT_N_0
// YES-DAG: __GLIBCXX_TYPE_INT_N_0
// YES-DAG: __GLIBCXX_BITSIZE_INT_N_0