usr/src/head/assert.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1988 AT&T */
  23 /*        All Rights Reserved   */
  24
  25 /*
  26  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  27  * Copyright 2016 Joyent, Inc.
  28  *
  29  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  30  * Use is subject to license terms.
  31  */
  32
  33 #ifndef _ASSERT_H
  34 #define _ASSERT_H
  35
  36 #ifdef  __cplusplus
  37 extern "C" {
  38 #endif
  39
  40 #if __STDC_VERSION__ - 0 >= 199901L
  41 extern void __assert_c99(const char *, const char *, int, const char *);
  42 #else
  43 extern void __assert(const char *, const char *, int);
  44 #endif /* __STDC_VERSION__ - 0 >= 199901L */
  45
  46 /*
  47  * In C11 the static_assert macro is always defined, unlike the assert macro.
  48  */
  49 #if __STDC_VERSION__ - 0 >= 201112L
  50 #define static_assert   _Static_assert
  51 #endif /* __STDC_VERSION - 0 >= 201112L */
  52
  53 #ifdef  __cplusplus
  54 }
  55 #endif
  56
  57 #endif  /* _ASSERT_H */
  58
  59 /*
  60  * Note that the ANSI C Standard requires all headers to be idempotent except
  61  * <assert.h> which is explicitly required not to be idempotent (section 4.1.2).
  62  * Therefore, it is by intent that the header guards (#ifndef _ASSERT_H) do
  63  * not span this entire file.
  64  */
  65
  66 #undef  assert
  67
  68 #ifdef  NDEBUG
  69
  70 #define assert(EX) ((void)0)
  71
  72 #else
  73
  74 #if __STDC_VERSION__ - 0 >= 199901L
  75 #define assert(EX) (void)((EX) || \
  76         (__assert_c99(#EX, __FILE__, __LINE__, __func__), 0))
  77 #else
  78 #define assert(EX) (void)((EX) || (__assert(#EX, __FILE__, __LINE__), 0))
  79 #endif /* __STDC_VERSION__ - 0 >= 199901L */
  80
  81 #endif  /* NDEBUG */