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[libc++] Remove definition of _LIBCPP_ALIGNOF for GCC in C++03 mode 

That definition is known to be potentially incorrect, and we don't support
GCC in C++03 mode anyway.
This commit is contained in:
Louis Dionne 2020-09-02 12:29:42 -04:00
parent 44cc78da05
commit 4f57a126c4
1 changed files with 1 additions and 3 deletions
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4
libcxx/include/__config
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@ -398,9 +398,7 @@
#elif defined(_LIBCPP_COMPILER_CLANG)
# define _LIBCPP_ALIGNOF(_Tp) _Alignof(_Tp)
#else
// This definition is potentially buggy, but it's only taken with GCC in C++03,
// which we barely support anyway. See llvm.org/PR39713
# define _LIBCPP_ALIGNOF(_Tp) __alignof(_Tp)
# error "We don't know a correct way to implement alignof(T) in C++03 outside of Clang"
#endif
#define _LIBCPP_PREFERRED_ALIGNOF(_Tp) __alignof(_Tp)