libcxx/include/cstdalign

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_CSTDALIGN
#define _LIBCPP_CSTDALIGN

/*
    cstdalign synopsis

Macros:

    __alignas_is_defined
    __alignof_is_defined

*/

#include <__config>

// <stdalign.h> is not provided by libc++
#if __has_include(<stdalign.h>)
#  include <stdalign.h>
#  ifdef _LIBCPP_STDALIGN_H
#    error "If libc++ starts defining <stdalign.h>, the __has_include check should move to libc++'s <stdalign.h>"
#  endif
#endif

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

#undef __alignas_is_defined
#define __alignas_is_defined 1

#undef __alignof_is_defined
#define __alignof_is_defined 1

#if _LIBCPP_STD_VER >= 20

using __standard_header_cstdalign _LIBCPP_DEPRECATED_("removed in C++20.") = void;
using __use_standard_header_cstdalign                                      = __standard_header_cstdalign;

#elif _LIBCPP_STD_VER >= 17

using __standard_header_cstdalign _LIBCPP_DEPRECATED = void;
using __use_standard_header_cstdalign                = __standard_header_cstdalign;

#endif

#endif // _LIBCPP_CSTDALIGN