diff options
author | Clint Adams <clint@debian.org> | 2017-01-04 20:39:58 -0500 |
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committer | Clint Adams <clint@debian.org> | 2017-01-04 20:39:58 -0500 |
commit | 29d3f78df4630dbee0a141e2be8e77275724b3a8 (patch) | |
tree | 89a97129c5b799046be2af10bde88ea035b59bd1 /gnulib-tests/ftell.c | |
parent | d75f3c567505ad7acd2c1943207b367593652739 (diff) |
New upstream version 4.3
Diffstat (limited to 'gnulib-tests/ftell.c')
-rw-r--r-- | gnulib-tests/ftell.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gnulib-tests/ftell.c b/gnulib-tests/ftell.c new file mode 100644 index 0000000..75ed1b2 --- /dev/null +++ b/gnulib-tests/ftell.c @@ -0,0 +1,37 @@ +/* An ftell() function that works around platform bugs. + Copyright (C) 2007-2016 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; + } +} |