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-rw-r--r--gl/ftell.c37
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-/* An ftell() function that works around platform bugs.
- Copyright (C) 2007-2017 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 <http://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;
- }
-}