50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/* A substitute for ISO C11 <stdalign.h>.
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Copyright 2011-2024 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Paul Eggert and Bruno Haible. */
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/* Define two obsolescent C11 macros, assuming alignas and alignof are
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either keywords or alignasof-defined macros. */
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#ifndef _@GUARD_PREFIX@_STDALIGN_H
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#if __GNUC__ >= 3
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@PRAGMA_SYSTEM_HEADER@
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#endif
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@PRAGMA_COLUMNS@
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/* We need to include the system's <stdalign.h> when it exists, because it might
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define 'alignof' as a macro when it's not a keyword or compiler built-in. */
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#if @HAVE_STDALIGN_H@
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/* The include_next requires a split double-inclusion guard. */
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# @INCLUDE_NEXT@ @NEXT_STDALIGN_H@
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#endif
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#ifndef _@GUARD_PREFIX@_STDALIGN_H
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#define _@GUARD_PREFIX@_STDALIGN_H
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#if (defined alignas \
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|| (defined __STDC_VERSION__ && 202311 <= __STDC_VERSION__) \
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|| (defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER)))
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# define __alignas_is_defined 1
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#endif
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#define __alignof_is_defined 1
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#endif /* _@GUARD_PREFIX@_STDALIGN_H */
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#endif /* _@GUARD_PREFIX@_STDALIGN_H */
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