1/*
2 * Copyright 2004-2015 Haiku, Inc. All Rights Reserved.
3 * Distributed under the terms of the MIT License.
4 */
5
6/* Include guards are only on part of the file, as assert.h is required
7   to support being included multiple times.
8
9   E.g. the following is required to be valid:
10
11   #undef NDEBUG
12   #include <assert.h>
13
14   assert(0); // this assertion will be triggered
15
16   #define NDEBUG
17   #include <assert.h>
18
19   assert(0); // this assertion will not be triggered
20*/
21
22#undef assert
23
24#ifndef NDEBUG
25	/* defining NDEBUG disables assert() functionality */
26
27#ifndef _ASSERT_H_
28#define _ASSERT_H_
29
30#ifdef __cplusplus
31extern "C" {
32#endif
33
34extern void __assert_fail(const char *assertion, const char *file,
35				unsigned int line, const char *function)
36	__attribute__ ((noreturn));
37
38extern void __assert_perror_fail(int error, const char *file,
39				unsigned int line, const char *function)
40	__attribute__ ((noreturn));
41
42#ifdef __cplusplus
43}
44#endif
45
46#endif /* !_ASSERT_H_ */
47
48#define assert(assertion) \
49	((assertion) ? (void)0 : __assert_fail(#assertion, __FILE__, __LINE__, __PRETTY_FUNCTION__))
50
51#else	/* NDEBUG */
52#	define assert(condition) ((void)0)
53#endif
54
55#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L && !defined(static_assert)
56#	define static_assert _Static_assert
57#endif
58