Mercurial > gnulib
view tests/test-fseeko4.c @ 17249:e542fd46ad6f
maint: update all copyright year number ranges
Run "make update-copyright". Compare to commit 1602f0a from last year.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Tue, 01 Jan 2013 00:50:58 +0000 |
parents | 8250f2777afc |
children | 3a09cc104f4c |
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/* Test of fseeko() function. Copyright (C) 2011-2013 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> #include <stdio.h> #include <errno.h> #include <unistd.h> #include "macros.h" int main (int argc, char **argv) { const char *filename = argv[1]; /* Test that fseeko() sets errno if someone else closes the stream fd behind the back of stdio. */ { FILE *fp = fopen (filename, "r"); ASSERT (fp != NULL); setvbuf (fp, NULL, _IONBF, 0); ASSERT (ftell (fp) == 0); ASSERT (fseeko (fp, 0, SEEK_END) == 0); ASSERT (ftell (fp) > 0); ASSERT (close (fileno (fp)) == 0); errno = 0; ASSERT (fseeko (fp, 0, SEEK_SET) == -1); ASSERT (errno == EBADF); fclose (fp); } /* Test that fseeko() sets errno if the stream was constructed with an invalid file descriptor. */ { FILE *fp = fdopen (-1, "w"); if (fp != NULL) { errno = 0; ASSERT (fseeko (fp, 0, SEEK_END) == -1); ASSERT (errno == EBADF); fclose (fp); } } { FILE *fp = fdopen (99, "w"); if (fp != NULL) { errno = 0; ASSERT (fseeko (fp, 0, SEEK_END) == -1); ASSERT (errno == EBADF); fclose (fp); } } return 0; }