1/* An ftell() function that works around platform bugs.
2   Copyright (C) 2007-2014 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 of the License, or
7   (at your option) 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
15   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
16
17#include <config.h>
18
19/* Specification.  */
20#include <stdio.h>
21
22#include <errno.h>
23#include <limits.h>
24
25long
26ftell (FILE *fp)
27{
28  /* Use the replacement ftello function with all its workarounds.  */
29  off_t offset = ftello (fp);
30  if (LONG_MIN <= offset && offset <= LONG_MAX)
31    return /* (long) */ offset;
32  else
33    {
34      errno = EOVERFLOW;
35      return -1;
36    }
37}
38