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98b485d83b
GNO vsnprintf will give an error if size is 0, leading vasprintf to fail. This prevented sending data in telnetd.
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*-
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* Copyright (c) 2006 Verdens Gang AS
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* Copyright (c) 2006-2007 Linpro AS
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* All rights reserved.
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*
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* Author: Dag-Erling Smørgrav <des@linpro.no>
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $Id$
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*
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*/
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#ifdef __GNO__
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#define va_copy(a,b) memcpy((&a),(&b),sizeof(b))
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int
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vasprintf(char **strp, const char *fmt, va_list ap)
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{
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va_list aq;
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int ret;
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char c;
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va_copy(aq, ap);
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ret = vsnprintf(&c, 1, fmt, ap);
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/* va_end(ap); -- Don't do this on ORCA/C; it messes up the stack */
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if ((*strp = malloc(ret + 1)) == NULL)
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return (-1);
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ret = vsnprintf(*strp, ret + 1, fmt, aq);
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return (ret);
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}
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#endif
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