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Compat glue needed for Solaris 9 and 10.

Thanks to Sevan Janiyan <venture37 at geeklan dot co dot uk> for
reporting the Solaris 10 issues, to Jan Holzhueter <jh at opencsw
dot org> for some additional insight, and to OpenCSW in general for
providing me with a Solaris 9/10/11 testing environment.

/*	$Id: test-vasprintf.c,v 1.1 2015/03/19 14:57:29 schwarze Exp $	*/
/*
 * Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdarg.h>
#include <stdio.h>
#include <string.h>

int
testfunc(char **ret, const char *format, ...)
{
	va_list	 ap;
	int	 irc;

	va_start(ap, format);
	irc = vasprintf(ret, format, ap);
	va_end(ap);

	return(irc);
}

int
main(void)
{
	char	*ret;

	if (testfunc(&ret, "%s.", "Text") != 5)
		return(1);
	if (strcmp(ret, "Text."))
		return(2);
	return(0);
}