2 * Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
3 * Copyright (c) 2015-2017 The strace developers.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #ifndef STRACE_GCC_COMPAT_H
30 #define STRACE_GCC_COMPAT_H
32 #if defined __GNUC__ && defined __GNUC_MINOR__
33 # define GNUC_PREREQ(maj, min) \
34 ((__GNUC__ << 16) + __GNUC_MINOR__ >= ((maj) << 16) + (min))
36 # define __attribute__(x) /* empty */
37 # define GNUC_PREREQ(maj, min) 0
41 # define ATTRIBUTE_NORETURN __attribute__((__noreturn__))
43 # define ATTRIBUTE_NORETURN /* empty */
47 # define ATTRIBUTE_FORMAT(args) __attribute__((__format__ args))
48 # define ATTRIBUTE_ALIGNED(arg) __attribute__((__aligned__(arg)))
49 # define ATTRIBUTE_PACKED __attribute__((__packed__))
51 # define ATTRIBUTE_FORMAT(args) /* empty */
52 # define ATTRIBUTE_ALIGNED(arg) /* empty */
53 # define ATTRIBUTE_PACKED /* empty */
57 # define SAME_TYPE(x, y) __builtin_types_compatible_p(typeof(x), typeof(y))
58 # define FAIL_BUILD_ON_ZERO(expr) (sizeof(int[-1 + 2 * !!(expr)]) * 0)
59 /* &(a)[0] is a pointer and not an array, shouldn't be treated as the same */
60 # define MUST_BE_ARRAY(a) FAIL_BUILD_ON_ZERO(!SAME_TYPE((a), &(a)[0]))
62 # define SAME_TYPE(x, y) 0
63 # define MUST_BE_ARRAY(a) 0
67 # define ATTRIBUTE_MALLOC __attribute__((__malloc__))
69 # define ATTRIBUTE_MALLOC /* empty */
73 # define ATTRIBUTE_NOINLINE __attribute__((__noinline__))
75 # define ATTRIBUTE_NOINLINE /* empty */
79 # define ATTRIBUTE_SENTINEL __attribute__((__sentinel__))
81 # define ATTRIBUTE_SENTINEL /* empty */
85 # define ALIGNOF(t_) __alignof__(t_)
87 # define ALIGNOF(t_) (sizeof(struct { char x_; t_ y_; }) - sizeof(t_))
91 # define ATTRIBUTE_ALLOC_SIZE(args) __attribute__((__alloc_size__ args))
93 # define ATTRIBUTE_ALLOC_SIZE(args) /* empty */
97 # define ATTRIBUTE_FALLTHROUGH __attribute__((__fallthrough__))
99 # define ATTRIBUTE_FALLTHROUGH ((void) 0)
102 #endif /* !STRACE_GCC_COMPAT_H */