1/* Formatted output to strings.
2   Copyright (C) 1999, 2002, 2006-2014 Free Software Foundation, Inc.
3
4   This program is free software; you can redistribute it and/or modify
5   it under the terms of the GNU General Public License as published by
6   the Free Software Foundation; either version 3, or (at your option)
7   any later version.
8
9   This program is distributed in the hope that it will be useful,
10   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12   GNU General Public License for more details.
13
14   You should have received a copy of the GNU General Public License along
15   with this program; if not, see <http://www.gnu.org/licenses/>.  */
16
17#include <config.h>
18
19/* Specification.  */
20#ifdef IN_LIBASPRINTF
21# include "vasprintf.h"
22#else
23# include <stdio.h>
24#endif
25
26#include <errno.h>
27#include <limits.h>
28#include <stdlib.h>
29
30#include "vasnprintf.h"
31
32int
33vasprintf (char **resultp, const char *format, va_list args)
34{
35  size_t length;
36  char *result = vasnprintf (NULL, &length, format, args);
37  if (result == NULL)
38    return -1;
39
40  if (length > INT_MAX)
41    {
42      free (result);
43      errno = EOVERFLOW;
44      return -1;
45    }
46
47  *resultp = result;
48  /* Return the number of resulting bytes, excluding the trailing NUL.  */
49  return length;
50}
51