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140 lines
4.7 KiB
140 lines
4.7 KiB
/* |
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* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org> |
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* Copyright (c) 2015-2018 The strace developers. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef STRACE_GCC_COMPAT_H |
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#define STRACE_GCC_COMPAT_H |
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#if defined __GNUC__ && defined __GNUC_MINOR__ |
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# define GNUC_PREREQ(maj, min) \ |
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((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min)) |
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#else |
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# define GNUC_PREREQ(maj, min) 0 |
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#endif |
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#if defined __clang__ && defined __clang_major__ && defined __clang_minor__ |
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# define CLANG_PREREQ(maj, min) \ |
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((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min)) |
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#else |
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# define CLANG_PREREQ(maj, min) 0 |
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#endif |
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#if !(GNUC_PREREQ(2, 0) || CLANG_PREREQ(1, 0)) |
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# define __attribute__(x) /* empty */ |
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#endif |
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#if GNUC_PREREQ(2, 5) |
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# define ATTRIBUTE_NORETURN __attribute__((__noreturn__)) |
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#else |
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# define ATTRIBUTE_NORETURN /* empty */ |
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#endif |
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#if GNUC_PREREQ(2, 7) |
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# define ATTRIBUTE_FORMAT(args) __attribute__((__format__ args)) |
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# define ATTRIBUTE_ALIGNED(arg) __attribute__((__aligned__(arg))) |
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# define ATTRIBUTE_PACKED __attribute__((__packed__)) |
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#else |
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# define ATTRIBUTE_FORMAT(args) /* empty */ |
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# define ATTRIBUTE_ALIGNED(arg) /* empty */ |
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# define ATTRIBUTE_PACKED /* empty */ |
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#endif |
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#if GNUC_PREREQ(3, 0) |
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# define SAME_TYPE(x, y) __builtin_types_compatible_p(typeof(x), typeof(y)) |
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# define FAIL_BUILD_ON_ZERO(expr) (sizeof(int[-1 + 2 * !!(expr)]) * 0) |
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/* &(a)[0] is a pointer and not an array, shouldn't be treated as the same */ |
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# define MUST_BE_ARRAY(a) FAIL_BUILD_ON_ZERO(!SAME_TYPE((a), &(a)[0])) |
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#else |
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# define SAME_TYPE(x, y) 0 |
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# define MUST_BE_ARRAY(a) 0 |
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#endif |
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#if GNUC_PREREQ(3, 0) |
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# define ATTRIBUTE_MALLOC __attribute__((__malloc__)) |
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#else |
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# define ATTRIBUTE_MALLOC /* empty */ |
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#endif |
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#if GNUC_PREREQ(3, 1) |
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# define ATTRIBUTE_NOINLINE __attribute__((__noinline__)) |
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#else |
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# define ATTRIBUTE_NOINLINE /* empty */ |
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#endif |
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#if GNUC_PREREQ(4, 0) |
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# define ATTRIBUTE_SENTINEL __attribute__((__sentinel__)) |
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#else |
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# define ATTRIBUTE_SENTINEL /* empty */ |
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#endif |
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#if GNUC_PREREQ(4, 1) |
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# define ALIGNOF(t_) __alignof__(t_) |
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#else |
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# define ALIGNOF(t_) (sizeof(struct { char x_; t_ y_; }) - sizeof(t_)) |
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#endif |
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#if GNUC_PREREQ(4, 3) |
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# define ATTRIBUTE_ALLOC_SIZE(args) __attribute__((__alloc_size__ args)) |
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#else |
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# define ATTRIBUTE_ALLOC_SIZE(args) /* empty */ |
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#endif |
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#if GNUC_PREREQ(7, 0) |
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# define ATTRIBUTE_FALLTHROUGH __attribute__((__fallthrough__)) |
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#else |
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# define ATTRIBUTE_FALLTHROUGH ((void) 0) |
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#endif |
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#if CLANG_PREREQ(2, 8) |
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# define DIAG_PUSH_IGNORE_OVERRIDE_INIT \ |
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_Pragma("clang diagnostic push"); \ |
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_Pragma("clang diagnostic ignored \"-Winitializer-overrides\""); |
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# define DIAG_POP_IGNORE_OVERRIDE_INIT \ |
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_Pragma("clang diagnostic pop"); |
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#elif GNUC_PREREQ(4, 2) |
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# define DIAG_PUSH_IGNORE_OVERRIDE_INIT \ |
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_Pragma("GCC diagnostic push"); \ |
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_Pragma("GCC diagnostic ignored \"-Woverride-init\""); |
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# define DIAG_POP_IGNORE_OVERRIDE_INIT \ |
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_Pragma("GCC diagnostic pop"); |
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#else |
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# define DIAG_PUSH_IGNORE_OVERRIDE_INIT /* empty */ |
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# define DIAG_POP_IGNORE_OVERRIDE_INIT /* empty */ |
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#endif |
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#if GNUC_PREREQ(6, 0) |
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# define DIAG_PUSH_IGNORE_TAUTOLOGICAL_COMPARE \ |
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_Pragma("GCC diagnostic push"); \ |
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_Pragma("GCC diagnostic ignored \"-Wtautological-compare\""); |
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# define DIAG_POP_IGNORE_TAUTOLOGICAL_COMPARE \ |
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_Pragma("GCC diagnostic pop"); |
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#else |
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# define DIAG_PUSH_IGNORE_TAUTOLOGICAL_COMPARE /* empty */ |
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# define DIAG_POP_IGNORE_TAUTOLOGICAL_COMPARE /* empty */ |
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#endif |
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#endif /* !STRACE_GCC_COMPAT_H */
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