63eb40eeb1
This PR deprecates `<ccomplex>`, `<cstdbool>`, `<ctgmath>`, and `<ciso646>` in C++17 and "removes" them in C++20 by special deprecation warnings. `<cstdalign>` is previously missing. This PR also tries to add them, and then deprecates and "removes" `<cstdalign>`. Papers: - https://wg21.link/P0063R3 - https://wg21.link/P0619R4 Closes #99985. --------- Co-authored-by: Louis Dionne <ldionne.2@gmail.com>
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_CSTDALIGN
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#define _LIBCPP_CSTDALIGN
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/*
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cstdalign synopsis
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Macros:
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__alignas_is_defined
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__alignof_is_defined
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*/
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#include <__config>
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// <stdalign.h> is not provided by libc++
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#if __has_include(<stdalign.h>)
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# include <stdalign.h>
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# ifdef _LIBCPP_STDALIGN_H
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# error "If libc++ starts defining <stdalign.h>, the __has_include check should move to libc++'s <stdalign.h>"
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# endif
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#endif
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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#undef __alignas_is_defined
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#define __alignas_is_defined 1
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#undef __alignof_is_defined
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#define __alignof_is_defined 1
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#if _LIBCPP_STD_VER >= 20
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using __standard_header_cstdalign _LIBCPP_DEPRECATED_("removed in C++20.") = void;
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using __use_standard_header_cstdalign = __standard_header_cstdalign;
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#elif _LIBCPP_STD_VER >= 17
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using __standard_header_cstdalign _LIBCPP_DEPRECATED = void;
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using __use_standard_header_cstdalign = __standard_header_cstdalign;
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#endif
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#endif // _LIBCPP_CSTDALIGN
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