ba27f5b7d6
This declaration conforms to the C11 standard Reference: ISO/IEC 9899:201x 7.2 Diagnostics <assert.h> _Static_assert performs compile-time assertion checking. According to ISO/IEC 9899:201x (draft) 7.2 Diagnostics <assert.h> defines the static_assert macro which expands to _Static_assert. It's not conditionalized by NDEBUG like the assert macro. According to ISO/IEC N3242=11-0012 (C++1x) the <cassert> header shall define only the assert macro, but not static_assert as it's already part of the C++11 language. Allow to define static_assert in C++ prior the C++11 standard. It might be broken but a nonstandard C++ compiler might support C11-like _Static_assert feature. Note that it's fatal for g++ 5.4, but it works for clang++ 3.8.1. Approved by <joerg>.
113 lines
4.1 KiB
C
113 lines
4.1 KiB
C
/* $NetBSD: assert.h,v 1.22 2016/10/03 12:08:39 kamil Exp $ */
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/*-
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)assert.h 8.2 (Berkeley) 1/21/94
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*/
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/*
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* Unlike other ANSI header files, <assert.h> may usefully be included
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* multiple times, with and without NDEBUG defined.
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*/
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#include <sys/cdefs.h>
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#include <sys/featuretest.h>
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#include <sys/null.h>
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#undef assert
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#ifdef NDEBUG
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# ifndef __lint__
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# define assert(e) (__static_cast(void,0))
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# else /* !__lint__ */
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# define assert(e)
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# endif /* __lint__ */
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#else /* !NDEBUG */
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# if __STDC__
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# define assert(e) \
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((e) ? __static_cast(void,0) : __assert13(__FILE__, __LINE__, \
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__assert_function__, #e))
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# else /* PCC */
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# define assert(e) \
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((e) ? __static_cast(void,0) : __assert13(__FILE__, __LINE__, \
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__assert_function__, "e"))
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# endif /* !__STDC__ */
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#endif /* NDEBUG */
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#undef _DIAGASSERT
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#if !defined(_DIAGNOSTIC)
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# if !defined(__lint__)
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# define _DIAGASSERT(e) (__static_cast(void,0))
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# else /* !__lint__ */
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# define _DIAGASSERT(e)
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# endif /* __lint__ */
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#else /* _DIAGNOSTIC */
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# if __STDC__
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# define _DIAGASSERT(e) \
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((e) ? __static_cast(void,0) : __diagassert13(__FILE__, __LINE__, \
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__assert_function__, #e))
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# else /* !__STDC__ */
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# define _DIAGASSERT(e) \
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((e) ? __static_cast(void,0) : __diagassert13(__FILE__, __LINE__, \
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__assert_function__, "e"))
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# endif
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#endif /* _DIAGNOSTIC */
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#if defined(__lint__)
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#define __assert_function__ (__static_cast(const void *,0))
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#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
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#define __assert_function__ __func__
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#elif __GNUC_PREREQ__(2, 6)
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#define __assert_function__ __PRETTY_FUNCTION__
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#else
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#define __assert_function__ (__static_cast(const void *,0))
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#endif
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#ifndef __ASSERT_DECLARED
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#define __ASSERT_DECLARED
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__BEGIN_DECLS
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__dead void __assert(const char *, int, const char *);
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__dead void __assert13(const char *, int, const char *, const char *);
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void __diagassert(const char *, int, const char *);
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void __diagassert13(const char *, int, const char *, const char *);
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__END_DECLS
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#endif /* __ASSERT_DECLARED */
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#if ((__cplusplus - 0) < 201103L)
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#ifndef static_assert
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#define static_assert _Static_assert
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#endif /* static_assert */
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#endif
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