include/assert.h

   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. All advertising materials mentioning features or use of this software
  19  *    must display the following acknowledgement:
  20  *      This product includes software developed by the University of
  21  *      California, Berkeley and its contributors.
  22  * 4. Neither the name of the University nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  *
  38  *      @(#)assert.h    8.2 (Berkeley) 1/21/94
  39  * $FreeBSD: src/include/assert.h,v 1.4 2002/03/23 17:24:53 imp Exp $
  40  */
  41
  42 #include <sys/cdefs.h>
  43 #ifdef __cplusplus
  44 #include <stdlib.h>
  45 #endif /* __cplusplus */
  46
  47 /*
  48  * Unlike other ANSI header files, <assert.h> may usefully be included
  49  * multiple times, with and without NDEBUG defined.
  50  */
  51
  52 #undef assert
  53 #undef __assert
  54
  55 #ifdef NDEBUG
  56 #define assert(e)       ((void)0)
  57 #else
  58
  59 #ifndef __GNUC__
  60
  61 __BEGIN_DECLS
  62 #ifndef __cplusplus
  63 void abort(void) __dead2;
  64 #endif /* !__cplusplus */
  65 int  printf(const char * __restrict, ...);
  66 __END_DECLS
  67
  68 #define assert(e)  \
  69     ((void) ((e) ? 0 : __assert (#e, __FILE__, __LINE__)))
  70 #define __assert(e, file, line) \
  71     (printf ("%s:%u: failed assertion `%s'\n", file, line, e), abort (), 0)
  72
  73 #else /* __GNUC__ */
  74
  75 __BEGIN_DECLS
  76 void __assert_rtn(const char *, const char *, int, const char *) __dead2;
  77 void __eprintf(const char *, const char *, unsigned, const char *) __dead2;
  78 __END_DECLS
  79
  80 #define __assert(e, file, line) \
  81     (__eprintf ("%s:%u: failed assertion `%s'\n", file, line, e), 0)
  82
  83 #if __DARWIN_UNIX03
  84 #define assert(e) \
  85     (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
  86 #else /* !__DARWIN_UNIX03 */
  87 #define assert(e)  \
  88     ((void) (__builtin_expect(!(e), 0) ? __assert (#e, __FILE__, __LINE__) : 0))
  89 #endif /* __DARWIN_UNIX03 */
  90
  91 #endif /* __GNUC__ */
  92 #endif /* NDEBUG */