include/assert.h

   1 /*-
   2  * SPDX-License-Identifier: BSD-3-Clause
   3  *
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  * (c) UNIX System Laboratories, Inc.
   7  * All or some portions of this file are derived from material licensed
   8  * to the University of California by American Telephone and Telegraph
   9  * Co. or Unix System Laboratories, Inc. and are reproduced herein with
  10  * the permission of UNIX System Laboratories, Inc.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  * 3. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  *      @(#)assert.h    8.2 (Berkeley) 1/21/94
  37  * $FreeBSD: head/include/assert.h 326024 2017-11-20 19:45:28Z pfg $
  38  */
  39
  40 #include <sys/cdefs.h>
  41
  42 /*
  43  * Unlike other ANSI header files, <assert.h> may usefully be included
  44  * multiple times, with and without NDEBUG defined.
  45  */
  46
  47 #undef assert
  48 #undef _assert
  49
  50 #ifdef NDEBUG
  51 #define assert(e)       ((void)0)
  52 #define _assert(e)      ((void)0)
  53 #else
  54 #define _assert(e)      assert(e)
  55
  56 #define assert(e)       ((e) ? (void)0 : __assert(__func__, __FILE__, \
  57                             __LINE__, #e))
  58 #endif /* NDEBUG */
  59
  60 #undef _DIAGASSERT
  61 #ifdef _DIAGNOSTIC
  62 #define _DIAGASSERT(e)  ((e) ? (void)0 : __diagassert(__FILE__, __LINE__, \
  63                             __func__, #e))
  64 #else
  65 #define _DIAGASSERT(e)  ((void)0)
  66 #endif
  67
  68 #ifndef _ASSERT_H_
  69 #define _ASSERT_H_
  70
  71 /*
  72  * Static assertions.  In principle we could define static_assert for
  73  * C++ older than C++11, but this breaks if _Static_assert is
  74  * implemented as a macro.
  75  *
  76  * C++ template parameters may contain commas, even if not enclosed in
  77  * parentheses, causing the _Static_assert macro to be invoked with more
  78  * than two parameters.
  79  */
  80 #if __ISO_C_VISIBLE >= 2011 && !defined(__cplusplus)
  81 #define static_assert   _Static_assert
  82 #endif
  83
  84 __BEGIN_DECLS
  85 void    __assert(const char *, const char *, int, const char *) __dead2;
  86 void    __diagassert(const char *, int, const char *, const char *);
  87 __END_DECLS
  88
  89 #endif /* !_ASSERT_H_ */