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| author | Martin Storsjö <martin@martin.st> | 2024-06-24 14:02:28 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-06-24 14:02:28 +0300 |
| commit | 4e6c8f1d30b8516fc7205bbcc97a78a728215512 (patch) | |
| tree | aa465c1dc2aec3525a61e2816d2bafd99be42987 /clang/lib/Frontend/InitPreprocessor.cpp | |
| parent | 3d8079229e7571a5912e880bf7a960d809c8ee96 (diff) | |
| download | llvm-4e6c8f1d30b8516fc7205bbcc97a78a728215512.zip llvm-4e6c8f1d30b8516fc7205bbcc97a78a728215512.tar.gz llvm-4e6c8f1d30b8516fc7205bbcc97a78a728215512.tar.bz2 | |
[clang] [MinGW] Set a predefined __GXX_TYPEINFO_EQUALITY_INLINE=0 for MinGW targets (#96062)
libstdc++ requires this define to match what is predefined in GCC for
the ABI of this platform; GCC hardcodes this define for all mingw
configurations in gcc/config/i386/cygming.h.
(It also defines __GXX_MERGED_TYPEINFO_NAMES=0, but that happens to
match the defaults in libstdc++ headers, so there's no similar need to
define it in Clang.)
This fixes a Clang/libstdc++ interop issue discussed at
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110572.
Diffstat (limited to 'clang/lib/Frontend/InitPreprocessor.cpp')
| -rw-r--r-- | clang/lib/Frontend/InitPreprocessor.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp index 2d5c94c..55ec460 100644 --- a/clang/lib/Frontend/InitPreprocessor.cpp +++ b/clang/lib/Frontend/InitPreprocessor.cpp @@ -934,6 +934,12 @@ static void InitializePredefinedMacros(const TargetInfo &TI, if (LangOpts.GNUCVersion && LangOpts.CPlusPlus11) Builder.defineMacro("__GXX_EXPERIMENTAL_CXX0X__"); + if (TI.getTriple().isWindowsGNUEnvironment()) { + // Set ABI defining macros for libstdc++ for MinGW, where the + // default in libstdc++ differs from the defaults for this target. + Builder.defineMacro("__GXX_TYPEINFO_EQUALITY_INLINE", "0"); + } + if (LangOpts.ObjC) { if (LangOpts.ObjCRuntime.isNonFragile()) { Builder.defineMacro("__OBJC2__"); |