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. 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  *      @(#)assert.h    8.2 (Berkeley) 1/21/94
  35  * $FreeBSD$
  36  */
  37
  38 #include <sys/cdefs.h>
  39
  40 /*
  41  * Unlike other ANSI header files, <assert.h> may usefully be included
  42  * multiple times, with and without NDEBUG defined.
  43  */
  44
  45 #undef assert
  46 #undef _assert
  47
  48 #ifdef NDEBUG
  49 #define assert(e)       ((void)0)
  50 #define _assert(e)      ((void)0)
  51 #else
  52 #define _assert(e)      assert(e)
  53
  54 #define assert(e)       ((e) ? (void)0 : __assert(__func__, __FILE__, \
  55                             __LINE__, #e))
  56 #endif /* NDEBUG */
  57
  58 #ifndef _ASSERT_H_
  59 #define _ASSERT_H_
  60
  61 /*
  62  * Static assertions.  In principle we could define static_assert for
  63  * C++ older than C++11, but this breaks if _Static_assert is
  64  * implemented as a macro.
  65  *
  66  * C++ template parameters may contain commas, even if not enclosed in
  67  * parentheses, causing the _Static_assert macro to be invoked with more
  68  * than two parameters.
  69  */
  70 #if __ISO_C_VISIBLE >= 2011 && !defined(__cplusplus)
  71 #define static_assert   _Static_assert
  72 #endif
  73
  74 __BEGIN_DECLS
  75 void __assert(const char *, const char *, int, const char *) __dead2;
  76 __END_DECLS
  77
  78 #endif /* !_ASSERT_H_ */