NetBSD/lib/libc/gen/err.c

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/*
* Copyright (c) 1994 Christos Zoulas
* All rights reserved.
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*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christos Zoulas.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
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*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* 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.
*/
#include <sys/cdefs.h>
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#ifdef __weak_reference
__weak_reference(__err, err);
__weak_reference(__verr, verr);
__weak_reference(__errx, errx);
__weak_reference(__verrx, verrx);
__weak_reference(__warn, warn);
__weak_reference(__vwarn, vwarn);
__weak_reference(__warnx, warnx);
__weak_reference(__vwarnx, vwarnx);
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#else
/*
* Without weak references, we would have to put one function per file
* in order to be able to replace only a single function without picking
* up all the others. Too bad; I am not going to create 100 little files.
* Also it is not that simple to just create dummy stubs that call __func
* because most of the functions are varyadic and we need to parse the
* argument list anyway.
*/
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#define __err err
#define __verr verr
#define __errx errx
#define __verrx verrx
#define __warn warn
#define __vwarn vwarn
#define __warnx warnx
#define __vwarnx vwarnx
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#include "__err.c"
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#endif