That commit was made without approval from a libc++ reviewer, and it
also broke the build in C++03 mode.
ptrdiff_t
size_t
- max_align_t // C++11
+ max_align_t
nullptr_t
byte // C++17
using ::ptrdiff_t;
using ::size_t;
-#if !defined(_LIBCPP_CXX03_LANG)
+#if defined(__CLANG_MAX_ALIGN_T_DEFINED) || defined(_GCC_MAX_ALIGN_T) || \
+ defined(__DEFINED_max_align_t) || defined(__NetBSD__)
+// Re-use the compiler's <stddef.h> max_align_t where possible.
using ::max_align_t;
+#else
+typedef long double max_align_t;
#endif
template <class _Tp> struct __libcpp_is_integral { enum { value = 0 }; };
_LIBCPP_BEGIN_NAMESPACE_STD
-#if defined(_LIBCPP_CXX03_LANG)
-union __libcpp_max_align_t {
- void * __f1;
- long long int __f2;
- long double __f3;
-};
-#endif
-
_LIBCPP_CONSTEXPR inline _LIBCPP_INLINE_VISIBILITY bool __is_overaligned_for_new(size_t __align) _NOEXCEPT {
#ifdef __STDCPP_DEFAULT_NEW_ALIGNMENT__
return __align > __STDCPP_DEFAULT_NEW_ALIGNMENT__;
-#elif defined(_LIBCPP_CXX03_LANG)
- return __align > alignment_of<__libcpp_max_align_t>::value;
#else
return __align > alignment_of<max_align_t>::value;
#endif
using std::nullptr_t;
}
+// Re-use the compiler's <stddef.h> max_align_t where possible.
+#if !defined(__CLANG_MAX_ALIGN_T_DEFINED) && !defined(_GCC_MAX_ALIGN_T) && \
+ !defined(__DEFINED_max_align_t) && !defined(__NetBSD__)
+typedef long double max_align_t;
+#endif
+
#endif
#endif // _LIBCPP_STDDEF_H