os161-1.99
 All Data Structures
assert.h
00001 /*
00002  * Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009
00003  *      The President and Fellows of Harvard College.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the University nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  */
00029 
00030 #ifndef _ASSERT_H_
00031 #define _ASSERT_H_
00032 
00033 /*
00034  * Required by the C standard
00035  */
00036 #undef assert
00037 
00038 /*
00039  * Function to call when an assert fails.
00040  */
00041 void __bad_assert(const char *file, int line, const char *msg);
00042 
00043 /*
00044  * Asserts are only "on" if NDEBUG isn't set. (This is standard C.)
00045  */
00046 
00047 #ifdef NDEBUG
00048 
00049 #if 0 /* not allowed by the C standard */
00050 #define assert(x) ((void)(x))   /* retain any side effects of X */
00051 #else
00052 #define assert(x) ((void)0)     /* mysteriously hide any side effects of X */
00053 #endif
00054 
00055 #else
00056 #define assert(x) ((x) ? (void)0 : __bad_assert(__FILE__, __LINE__, #x))
00057 #endif
00058 
00059 
00060 #endif /* _ASSERT_H_ */
 All Data Structures