1 /*- 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /** 36 * @file assert.h 37 * @brief Assertions. 38 * 39 * There's no include guard in this file because <assert.h> may usefully be 40 * included multiple times, with and without NDEBUG defined. 41 */ 42 43 #include <sys/cdefs.h> 44 45 #undef assert 46 #undef __assert_no_op 47 48 /** Internal implementation detail. Do not use. */ 49 #define __assert_no_op __BIONIC_CAST(static_cast, void, 0) 50 51 #ifdef NDEBUG 52 # define assert(e) __assert_no_op 53 #else 54 # if defined(__cplusplus) || __STDC_VERSION__ >= 199901L 55 # define assert(e) ((e) ? __assert_no_op : __assert2(__FILE__, __LINE__, __PRETTY_FUNCTION__, #e)) 56 # else 57 /** 58 * assert() aborts the program after logging an error message, if the 59 * expression evaluates to false. 60 * 61 * On Android, the error goes to both stderr and logcat. 62 */ 63 # define assert(e) ((e) ? __assert_no_op : __assert(__FILE__, __LINE__, #e)) 64 # endif 65 #endif 66 67 #if !defined(__cplusplus) && __STDC_VERSION__ >= 201112L 68 # undef static_assert 69 # define static_assert _Static_assert 70 #endif 71 72 __BEGIN_DECLS 73 74 /** 75 * __assert() is called by assert() on failure. Most users want assert() 76 * instead, but this can be useful for reporting other failures. 77 */ 78 void __assert(const char* _Nonnull __file, int __line, const char* _Nonnull __msg) __noreturn; 79 80 /** 81 * __assert2() is called by assert() on failure. Most users want assert() 82 * instead, but this can be useful for reporting other failures. 83 */ 84 void __assert2(const char* _Nonnull __file, int __line, const char* _Nonnull __function, const char* _Nonnull __msg) __noreturn; 85 86 __END_DECLS 87