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| author | Lorenz Kästle <12514511+RincewindsHat@users.noreply.github.com> | 2024-10-31 16:27:12 +0100 |
|---|---|---|
| committer | Lorenz Kästle <12514511+RincewindsHat@users.noreply.github.com> | 2024-10-31 16:27:12 +0100 |
| commit | 5be04ec2ceb1df77afbca4fcbf9e92a712612d6f (patch) | |
| tree | 2b2e1c71dffae827c8e45cd4cccc375093d03486 /gl/stdalign.in.h | |
| parent | 6d1d1dac32841d5ca6ee51bb09b30a6c604b17e2 (diff) | |
| download | monitoring-plugins-5be04ec2ceb1df77afbca4fcbf9e92a712612d6f.tar.gz | |
Sync with the latest Gnulib code (d4ec02b3cc)
Diffstat (limited to 'gl/stdalign.in.h')
| -rw-r--r-- | gl/stdalign.in.h | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/gl/stdalign.in.h b/gl/stdalign.in.h deleted file mode 100644 index 7f9dbb46..00000000 --- a/gl/stdalign.in.h +++ /dev/null | |||
| @@ -1,137 +0,0 @@ | |||
| 1 | /* A substitute for ISO C11 <stdalign.h>. | ||
| 2 | |||
| 3 | Copyright 2011-2023 Free Software Foundation, Inc. | ||
| 4 | |||
| 5 | This file is free software: you can redistribute it and/or modify | ||
| 6 | it under the terms of the GNU Lesser General Public License as | ||
| 7 | published by the Free Software Foundation; either version 2.1 of the | ||
| 8 | License, or (at your option) any later version. | ||
| 9 | |||
| 10 | This file is distributed in the hope that it will be useful, | ||
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 13 | GNU Lesser General Public License for more details. | ||
| 14 | |||
| 15 | You should have received a copy of the GNU Lesser General Public License | ||
| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */ | ||
| 17 | |||
| 18 | /* Written by Paul Eggert and Bruno Haible. */ | ||
| 19 | |||
| 20 | #ifndef _GL_STDALIGN_H | ||
| 21 | #define _GL_STDALIGN_H | ||
| 22 | |||
| 23 | /* ISO C11 <stdalign.h> for platforms that lack it. | ||
| 24 | |||
| 25 | References: | ||
| 26 | ISO C11 (latest free draft | ||
| 27 | <http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1570.pdf>) | ||
| 28 | sections 6.5.3.4, 6.7.5, 7.15. | ||
| 29 | C++11 (latest free draft | ||
| 30 | <http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3242.pdf>) | ||
| 31 | section 18.10. */ | ||
| 32 | |||
| 33 | /* alignof (TYPE), also known as _Alignof (TYPE), yields the alignment | ||
| 34 | requirement of a structure member (i.e., slot or field) that is of | ||
| 35 | type TYPE, as an integer constant expression. | ||
| 36 | |||
| 37 | This differs from GCC's and clang's __alignof__ operator, which can | ||
| 38 | yield a better-performing alignment for an object of that type. For | ||
| 39 | example, on x86 with GCC and on Linux/x86 with clang, | ||
| 40 | __alignof__ (double) and __alignof__ (long long) are 8, whereas | ||
| 41 | alignof (double) and alignof (long long) are 4 unless the option | ||
| 42 | '-malign-double' is used. | ||
| 43 | |||
| 44 | The result cannot be used as a value for an 'enum' constant, if you | ||
| 45 | want to be portable to HP-UX 10.20 cc and AIX 3.2.5 xlc. */ | ||
| 46 | |||
| 47 | /* FreeBSD 9.1 <sys/cdefs.h>, included by <stddef.h> and lots of other | ||
| 48 | standard headers, defines conflicting implementations of _Alignas | ||
| 49 | and _Alignof that are no better than ours; override them. */ | ||
| 50 | #undef _Alignas | ||
| 51 | #undef _Alignof | ||
| 52 | |||
| 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)) | ||
| 60 | # ifdef __cplusplus | ||
| 61 | # if (201103 <= __cplusplus || defined _MSC_VER) | ||
| 62 | # define _Alignof(type) alignof (type) | ||
| 63 | # else | ||
| 64 | template <class __t> struct __alignof_helper { char __a; __t __b; }; | ||
| 65 | # define _Alignof(type) offsetof (__alignof_helper<type>, __b) | ||
| 66 | # define _GL_STDALIGN_NEEDS_STDDEF 1 | ||
| 67 | # endif | ||
| 68 | # else | ||
| 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 | ||
| 75 | # endif | ||
| 76 | #endif | ||
| 77 | #if ! (defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER)) | ||
| 78 | # define alignof _Alignof | ||
| 79 | #endif | ||
| 80 | #define __alignof_is_defined 1 | ||
| 81 | |||
| 82 | /* alignas (A), also known as _Alignas (A), aligns a variable or type | ||
| 83 | to the alignment A, where A is an integer constant expression. For | ||
| 84 | example: | ||
| 85 | |||
| 86 | int alignas (8) foo; | ||
| 87 | struct s { int a; int alignas (8) bar; }; | ||
| 88 | |||
| 89 | aligns the address of FOO and the offset of BAR to be multiples of 8. | ||
| 90 | |||
| 91 | A should be a power of two that is at least the type's alignment | ||
| 92 | and at most the implementation's alignment limit. This limit is | ||
| 93 | 2**28 on typical GNUish hosts, and 2**13 on MSVC. To be portable | ||
| 94 | to MSVC through at least version 10.0, A should be an integer | ||
| 95 | constant, as MSVC does not support expressions such as 1 << 3. | ||
| 96 | To be portable to Sun C 5.11, do not align auto variables to | ||
| 97 | anything stricter than their default alignment. | ||
| 98 | |||
| 99 | The following C11 requirements are not supported here: | ||
| 100 | |||
| 101 | - If A is zero, alignas has no effect. | ||
| 102 | - alignas can be used multiple times; the strictest one wins. | ||
| 103 | - alignas (TYPE) is equivalent to alignas (alignof (TYPE)). | ||
| 104 | |||
| 105 | */ | ||
| 106 | |||
| 107 | #if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112 | ||
| 108 | # if defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER) | ||
| 109 | # define _Alignas(a) alignas (a) | ||
| 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__)) | ||
| 117 | # define _Alignas(a) __attribute__ ((__aligned__ (a))) | ||
| 118 | # elif 1300 <= _MSC_VER | ||
| 119 | # define _Alignas(a) __declspec (align (a)) | ||
| 120 | # endif | ||
| 121 | #endif | ||
| 122 | #if ((defined _Alignas \ | ||
| 123 | && !(defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER))) \ | ||
| 124 | || (defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__)) | ||
| 125 | # define alignas _Alignas | ||
| 126 | #endif | ||
| 127 | #if (defined alignas \ | ||
| 128 | || (defined __cplusplus && (201103 <= __cplusplus || defined _MSC_VER))) | ||
| 129 | # define __alignas_is_defined 1 | ||
| 130 | #endif | ||
| 131 | |||
| 132 | /* Include <stddef.h> if needed for offsetof. */ | ||
| 133 | #if _GL_STDALIGN_NEEDS_STDDEF | ||
| 134 | # include <stddef.h> | ||
| 135 | #endif | ||
| 136 | |||
| 137 | #endif /* _GL_STDALIGN_H */ | ||
