xref: /llvm-project/libcxx/include/cstdalign (revision f69585235ec85d54e0f3fc41b2d5700430907f99)

// -*- 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

*/

#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
#  include <__cxx03/__config>
#else
#  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.") _LIBCPP_NODEBUG = void;
using __use_standard_header_cstdalign _LIBCPP_NODEBUG = __standard_header_cstdalign;

#  elif _LIBCPP_STD_VER >= 17

using __standard_header_cstdalign _LIBCPP_DEPRECATED _LIBCPP_NODEBUG = void;
using __use_standard_header_cstdalign _LIBCPP_NODEBUG                = __standard_header_cstdalign;

#  endif
#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)

#endif // _LIBCPP_CSTDALIGN