New upstream version 2.3.4
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556 changed files with 90432 additions and 53391 deletions
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/* A substitute for ISO C11 <stdalign.h>.
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Copyright 2011-2013 Free Software Foundation, Inc.
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Copyright 2011-2023 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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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 program is distributed in the hope that it will be useful,
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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 General Public License for more details.
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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 General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>. */
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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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requirement of a structure member (i.e., slot or field) that is of
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type TYPE, as an integer constant expression.
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This differs from GCC's __alignof__ operator, which can yield a
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better-performing alignment for an object of that type. For
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example, on x86 with GCC, __alignof__ (double) and __alignof__
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(long long) are 8, whereas alignof (double) and alignof (long long)
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are 4 unless the option '-malign-double' is used.
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This differs from GCC's and clang's __alignof__ operator, which can
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yield a better-performing alignment for an object of that type. For
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example, on x86 with GCC and on Linux/x86 with clang,
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__alignof__ (double) and __alignof__ (long long) are 8, whereas
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alignof (double) and alignof (long long) are 4 unless the option
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'-malign-double' is used.
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The result cannot be used as a value for an 'enum' constant, if you
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want to be portable to HP-UX 10.20 cc and AIX 3.2.5 xlc.
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Include <stddef.h> for offsetof. */
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#include <stddef.h>
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want to be portable to HP-UX 10.20 cc and AIX 3.2.5 xlc. */
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/* FreeBSD 9.1 <sys/cdefs.h>, included by <stddef.h> and lots of other
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standard headers, defines conflicting implementations of _Alignas
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#undef _Alignas
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#undef _Alignof
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#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112
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/* GCC releases before GCC 4.9 had a bug in _Alignof. See GCC bug 52023
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<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>.
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clang versions < 8.0.0 have the same bug. */
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#if (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 \
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|| (defined __GNUC__ && __GNUC__ < 4 + (__GNUC_MINOR__ < 9) \
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&& !defined __clang__) \
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|| (defined __clang__ && __clang_major__ < 8))
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# ifdef __cplusplus
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# if 201103 <= __cplusplus
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# if (201103 <= __cplusplus || defined _MSC_VER)
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# define _Alignof(type) alignof (type)
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# else
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template <class __t> struct __alignof_helper { char __a; __t __b; };
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# define _Alignof(type) offsetof (__alignof_helper<type>, __b)
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# define _GL_STDALIGN_NEEDS_STDDEF 1
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# endif
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# else
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# define _Alignof(type) offsetof (struct { char __a; type __b; }, __b)
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# if (defined __GNUC__ && 4 <= __GNUC__) || defined __clang__
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# define _Alignof(type) __builtin_offsetof (struct { char __a; type __b; }, __b)
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# else
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# define _Alignof(type) offsetof (struct { char __a; type __b; }, __b)
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# define _GL_STDALIGN_NEEDS_STDDEF 1
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# endif
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# endif
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#endif
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#define alignof _Alignof
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#if ! (defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER))
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# define alignof _Alignof
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#endif
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#define __alignof_is_defined 1
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/* alignas (A), also known as _Alignas (A), aligns a variable or type
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*/
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#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112
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# if defined __cplusplus && 201103 <= __cplusplus
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# if defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER)
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# define _Alignas(a) alignas (a)
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# elif __GNUC__ || __IBMC__ || __IBMCPP__ || __ICC || 0x5110 <= __SUNPRO_C
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# elif (!defined __attribute__ \
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&& ((defined __APPLE__ && defined __MACH__ \
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? 4 < __GNUC__ + (1 <= __GNUC_MINOR__) \
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: __GNUC__ && !defined __ibmxl__) \
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|| (4 <= __clang_major__) \
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|| (__ia64 && (61200 <= __HP_cc || 61200 <= __HP_aCC)) \
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|| __ICC || 0x590 <= __SUNPRO_C || 0x0600 <= __xlC__))
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# define _Alignas(a) __attribute__ ((__aligned__ (a)))
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# elif 1300 <= _MSC_VER
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# define _Alignas(a) __declspec (align (a))
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# endif
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#endif
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#if defined _Alignas || (defined __STDC_VERSION && 201112 <= __STDC_VERSION__)
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#if ((defined _Alignas \
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&& !(defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER))) \
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|| (defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__))
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# define alignas _Alignas
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#endif
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#if (defined alignas \
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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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/* Include <stddef.h> if needed for offsetof. */
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#if _GL_STDALIGN_NEEDS_STDDEF
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# include <stddef.h>
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#endif
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#endif /* _GL_STDALIGN_H */
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