/* An ftell() function that works around platform bugs.

   Copyright (C) 2007-2018 Free Software Foundation, Inc.

   This program is free software: you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; either version 3 of the License, 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 General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */

#include <stdio.h>

#include <errno.h>

#include <limits.h>

long

ftell (FILE *fp)

{

  /* Use the replacement ftello function with all its workarounds.  */

  off_t offset = ftello (fp);

  if (LONG_MIN <= offset && offset <= LONG_MAX)

    return /* (long) */ offset;

  else

    {

      errno = EOVERFLOW;

      return -1;

    }

}