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authorRincewindsHat <12514511+RincewindsHat@users.noreply.github.com>2023-01-31 13:46:01 (GMT)
committerRincewindsHat <12514511+RincewindsHat@users.noreply.github.com>2023-01-31 13:46:01 (GMT)
commite8bd88d1fcded01ccd066572eeaae1b507989cb3 (patch)
treec8e7be6c07c6f635f6e803e6a6ba9e7a95fee7c0 /gl/stdalign.in.h
parent2ad962c13473607ca0d974bfaa516a0ed53ec73d (diff)
downloadmonitoring-plugins-e8bd88d1fcded01ccd066572eeaae1b507989cb3.tar.gz
Sync with the latest Gnulib code 668c0b8ffa
Diffstat (limited to 'gl/stdalign.in.h')
-rw-r--r--gl/stdalign.in.h78
1 files changed, 53 insertions, 25 deletions
diff --git a/gl/stdalign.in.h b/gl/stdalign.in.h
index 7254a3d..7f9dbb4 100644
--- a/gl/stdalign.in.h
+++ b/gl/stdalign.in.h
@@ -1,19 +1,19 @@
1/* A substitute for ISO C11 <stdalign.h>. 1/* A substitute for ISO C11 <stdalign.h>.
2 2
3 Copyright 2011-2013 Free Software Foundation, Inc. 3 Copyright 2011-2023 Free Software Foundation, Inc.
4 4
5 This program is free software; you can redistribute it and/or modify 5 This file is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by 6 it under the terms of the GNU Lesser General Public License as
7 the Free Software Foundation; either version 3, or (at your option) 7 published by the Free Software Foundation; either version 2.1 of the
8 any later version. 8 License, or (at your option) any later version.
9 9
10 This program is distributed in the hope that it will be useful, 10 This file is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details. 13 GNU Lesser General Public License for more details.
14 14
15 You should have received a copy of the GNU General Public License 15 You should have received a copy of the GNU Lesser General Public License
16 along with this program; if not, see <http://www.gnu.org/licenses/>. */ 16 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17 17
18/* Written by Paul Eggert and Bruno Haible. */ 18/* Written by Paul Eggert and Bruno Haible. */
19 19
@@ -34,17 +34,15 @@
34 requirement of a structure member (i.e., slot or field) that is of 34 requirement of a structure member (i.e., slot or field) that is of
35 type TYPE, as an integer constant expression. 35 type TYPE, as an integer constant expression.
36 36
37 This differs from GCC's __alignof__ operator, which can yield a 37 This differs from GCC's and clang's __alignof__ operator, which can
38 better-performing alignment for an object of that type. For 38 yield a better-performing alignment for an object of that type. For
39 example, on x86 with GCC, __alignof__ (double) and __alignof__ 39 example, on x86 with GCC and on Linux/x86 with clang,
40 (long long) are 8, whereas alignof (double) and alignof (long long) 40 __alignof__ (double) and __alignof__ (long long) are 8, whereas
41 are 4 unless the option '-malign-double' is used. 41 alignof (double) and alignof (long long) are 4 unless the option
42 '-malign-double' is used.
42 43
43 The result cannot be used as a value for an 'enum' constant, if you 44 The result cannot be used as a value for an 'enum' constant, if you
44 want to be portable to HP-UX 10.20 cc and AIX 3.2.5 xlc. 45 want to be portable to HP-UX 10.20 cc and AIX 3.2.5 xlc. */
45
46 Include <stddef.h> for offsetof. */
47#include <stddef.h>
48 46
49/* FreeBSD 9.1 <sys/cdefs.h>, included by <stddef.h> and lots of other 47/* FreeBSD 9.1 <sys/cdefs.h>, included by <stddef.h> and lots of other
50 standard headers, defines conflicting implementations of _Alignas 48 standard headers, defines conflicting implementations of _Alignas
@@ -52,19 +50,33 @@
52#undef _Alignas 50#undef _Alignas
53#undef _Alignof 51#undef _Alignof
54 52
55#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 53/* GCC releases before GCC 4.9 had a bug in _Alignof. See GCC bug 52023
54 <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52023>.
55 clang versions < 8.0.0 have the same bug. */
56#if (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 \
57 || (defined __GNUC__ && __GNUC__ < 4 + (__GNUC_MINOR__ < 9) \
58 && !defined __clang__) \
59 || (defined __clang__ && __clang_major__ < 8))
56# ifdef __cplusplus 60# ifdef __cplusplus
57# if 201103 <= __cplusplus 61# if (201103 <= __cplusplus || defined _MSC_VER)
58# define _Alignof(type) alignof (type) 62# define _Alignof(type) alignof (type)
59# else 63# else
60 template <class __t> struct __alignof_helper { char __a; __t __b; }; 64 template <class __t> struct __alignof_helper { char __a; __t __b; };
61# define _Alignof(type) offsetof (__alignof_helper<type>, __b) 65# define _Alignof(type) offsetof (__alignof_helper<type>, __b)
66# define _GL_STDALIGN_NEEDS_STDDEF 1
62# endif 67# endif
63# else 68# else
64# define _Alignof(type) offsetof (struct { char __a; type __b; }, __b) 69# if (defined __GNUC__ && 4 <= __GNUC__) || defined __clang__
70# define _Alignof(type) __builtin_offsetof (struct { char __a; type __b; }, __b)
71# else
72# define _Alignof(type) offsetof (struct { char __a; type __b; }, __b)
73# define _GL_STDALIGN_NEEDS_STDDEF 1
74# endif
65# endif 75# endif
66#endif 76#endif
67#define alignof _Alignof 77#if ! (defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER))
78# define alignof _Alignof
79#endif
68#define __alignof_is_defined 1 80#define __alignof_is_defined 1
69 81
70/* alignas (A), also known as _Alignas (A), aligns a variable or type 82/* alignas (A), also known as _Alignas (A), aligns a variable or type
@@ -93,17 +105,33 @@
93 */ 105 */
94 106
95#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 107#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112
96# if defined __cplusplus && 201103 <= __cplusplus 108# if defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER)
97# define _Alignas(a) alignas (a) 109# define _Alignas(a) alignas (a)
98# elif __GNUC__ || __IBMC__ || __IBMCPP__ || __ICC || 0x5110 <= __SUNPRO_C 110# elif (!defined __attribute__ \
111 && ((defined __APPLE__ && defined __MACH__ \
112 ? 4 < __GNUC__ + (1 <= __GNUC_MINOR__) \
113 : __GNUC__ && !defined __ibmxl__) \
114 || (4 <= __clang_major__) \
115 || (__ia64 && (61200 <= __HP_cc || 61200 <= __HP_aCC)) \
116 || __ICC || 0x590 <= __SUNPRO_C || 0x0600 <= __xlC__))
99# define _Alignas(a) __attribute__ ((__aligned__ (a))) 117# define _Alignas(a) __attribute__ ((__aligned__ (a)))
100# elif 1300 <= _MSC_VER 118# elif 1300 <= _MSC_VER
101# define _Alignas(a) __declspec (align (a)) 119# define _Alignas(a) __declspec (align (a))
102# endif 120# endif
103#endif 121#endif
104#if defined _Alignas || (defined __STDC_VERSION && 201112 <= __STDC_VERSION__) 122#if ((defined _Alignas \
123 && !(defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER))) \
124 || (defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__))
105# define alignas _Alignas 125# define alignas _Alignas
126#endif
127#if (defined alignas \
128 || (defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER)))
106# define __alignas_is_defined 1 129# define __alignas_is_defined 1
107#endif 130#endif
108 131
132/* Include <stddef.h> if needed for offsetof. */
133#if _GL_STDALIGN_NEEDS_STDDEF
134# include <stddef.h>
135#endif
136
109#endif /* _GL_STDALIGN_H */ 137#endif /* _GL_STDALIGN_H */