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