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mirror of https://git.FreeBSD.org/src.git synced 2024-12-04 09:09:56 +00:00
freebsd/include/assert.h
Ed Schouten ffa01562fd Don't define static_assert for C++.
Even though _Static_assert() is pretty robust for C code, it cannot work
correctly with C++ code.  This is due to the fact that C++ template
parameters may contain commas that are not enclosed in parentheses. For
example:

	static_assert(foo<int, int>::bar == baz, "...");

This causes _Static_assert to be called with an excessive number of
parameters.  If you want to use static_assert in C++, just use a C++11
compiler.

Reported on:	current@, ports@
2011-12-29 14:41:17 +00:00

79 lines
2.9 KiB
C

/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)assert.h 8.2 (Berkeley) 1/21/94
* $FreeBSD$
*/
#include <sys/cdefs.h>
/*
* Unlike other ANSI header files, <assert.h> may usefully be included
* multiple times, with and without NDEBUG defined.
*/
#undef assert
#undef _assert
#ifdef NDEBUG
#define assert(e) ((void)0)
#define _assert(e) ((void)0)
#else
#define _assert(e) assert(e)
#define assert(e) ((e) ? (void)0 : __assert(__func__, __FILE__, \
__LINE__, #e))
#endif /* NDEBUG */
#ifndef _ASSERT_H_
#define _ASSERT_H_
/*
* Static assertions. In principle we could define static_assert for
* C++ older than C++11, but this breaks if _Static_assert is
* implemented as a macro.
*
* C++ template parameters may contain commas, even if not enclosed in
* parentheses, causing the _Static_assert macro to be invoked with more
* than two parameters.
*/
#if __ISO_C_VISIBLE >= 2011 && !defined(__cplusplus)
#define static_assert _Static_assert
#endif
__BEGIN_DECLS
void __assert(const char *, const char *, int, const char *) __dead2;
__END_DECLS
#endif /* !_ASSERT_H_ */