assert.h revision c7ad68f0
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 omitted, 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#ifdef __cplusplus
28extern "C" {
29#endif
30
31extern void __assert_fail(const char *assertion, const char *file,
32				unsigned int line, const char *function)
33	__attribute__ ((noreturn));
34
35extern void __assert_perror_fail(int error, const char *file,
36				unsigned int line, const char *function)
37	__attribute__ ((noreturn));
38
39#ifdef __cplusplus
40}
41#endif
42
43#define assert(assertion) \
44	((assertion) ? (void)0 : __assert_fail(#assertion, __FILE__, __LINE__, __PRETTY_FUNCTION__))
45
46#else	/* NDEBUG */
47#	define assert(condition) ((void)0)
48#endif
49