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| author | Chandler Carruth <chandlerc@gmail.com> | 2014-02-21 08:37:30 +0000 |
|---|---|---|
| committer | Chandler Carruth <chandlerc@gmail.com> | 2014-02-21 08:37:30 +0000 |
| commit | 265b83a87f2bc31bb31fd7a0802b030f96c617a0 (patch) | |
| tree | 4d808bc2161cf549eb8b453d7ce12cedd6eef766 /libcxx/include/cstddef | |
| parent | 7da9487dd4494fa3037e06c64ae03a862fdbcd02 (diff) | |
| download | bcm5719-llvm-265b83a87f2bc31bb31fd7a0802b030f96c617a0.tar.gz bcm5719-llvm-265b83a87f2bc31bb31fd7a0802b030f96c617a0.zip | |
Teach libc++ to use the compiler-provided C-compatible ::max_align_t
rather than its own type for std::max_align_t. This is particularly
relevant as the types may not be ABI compatible despite users expecting
them to be.
llvm-svn: 201843
Diffstat (limited to 'libcxx/include/cstddef')
| -rw-r--r-- | libcxx/include/cstddef | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libcxx/include/cstddef b/libcxx/include/cstddef index 7ef16ff2a36..0030ec289a8 100644 --- a/libcxx/include/cstddef +++ b/libcxx/include/cstddef @@ -52,7 +52,12 @@ _LIBCPP_BEGIN_NAMESPACE_STD using ::ptrdiff_t; using ::size_t; +#if defined(__CLANG_MAX_ALIGN_T_DEFINED) || defined(_GCC_MAX_ALIGN_T) +// Re-use the compiler's <stddef.h> max_align_t where possible. +using ::max_align_t; +#else typedef long double max_align_t; +#endif #ifdef _LIBCPP_HAS_NO_NULLPTR |
