/* Formatted output to strings.
  Copyright (C) 1999, 2002, 2006 Free Software Foundation, Inc.

  This program is free software; you can redistribute it and/or modify it
  under the terms of the GNU Library General Public License as published
  by the Free Software Foundation; either version 2, or (at your option)
  any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Library General Public License for more details.

  You should have received a copy of the GNU Library General Public
  License along with this program; if not, write to the Free Software
  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  USA.  */

#include <config.h>

/* Specification.  */
#include "vasprintf.h"

#include <errno.h>
#include <limits.h>
#include <stdlib.h>

#include "vasnprintf.h"

/* Some systems, like OSF/1 4.0 and Woe32, don't have EOVERFLOW.  */
#ifndef EOVERFLOW
# define EOVERFLOW E2BIG
#endif

int
vasprintf (char **resultp, const char *format, va_list args)
{
 size_t length;
 char *result = vasnprintf (NULL, &length, format, args);
 if (result == NULL)
   return -1;

 if (length > INT_MAX)
   {
     free (result);
     errno = EOVERFLOW;
     return -1;
   }

 *resultp = result;
 /* Return the number of resulting bytes, excluding the trailing NUL.  */
 return length;
}