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 31 extern "C" { 32 #endif 33 34 extern void __assert_fail(const char *assertion, const char *file, 35 unsigned int line, const char *function) 36 __attribute__ ((noreturn)); 37 38 extern 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