1// -*- C++ -*- 2//===----------------------------------------------------------------------===// 3// 4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5// See https://llvm.org/LICENSE.txt for license information. 6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7// 8//===----------------------------------------------------------------------===// 9 10#ifndef _LIBCPP_CSTDALIGN 11#define _LIBCPP_CSTDALIGN 12 13/* 14 cstdalign synopsis 15 16Macros: 17 18 __alignas_is_defined 19 __alignof_is_defined 20 21*/ 22 23#include <__config> 24 25// <stdalign.h> is not provided by libc++ 26#if __has_include(<stdalign.h>) 27# include <stdalign.h> 28# ifdef _LIBCPP_STDALIGN_H 29# error "If libc++ starts defining <stdalign.h>, the __has_include check should move to libc++'s <stdalign.h>" 30# endif 31#endif 32 33#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 34# pragma GCC system_header 35#endif 36 37#undef __alignas_is_defined 38#define __alignas_is_defined 1 39 40#undef __alignof_is_defined 41#define __alignof_is_defined 1 42 43#if _LIBCPP_STD_VER >= 20 44 45using __standard_header_cstdalign _LIBCPP_DEPRECATED_("removed in C++20.") = void; 46using __use_standard_header_cstdalign = __standard_header_cstdalign; 47 48#elif _LIBCPP_STD_VER >= 17 49 50using __standard_header_cstdalign _LIBCPP_DEPRECATED = void; 51using __use_standard_header_cstdalign = __standard_header_cstdalign; 52 53#endif 54 55#endif // _LIBCPP_CSTDALIGN 56