Mercurial > gnulib
view tests/test-freopen.c @ 17576:344018b6e5d7
maint: update copyright
I ran 'make update-copyright'.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
---|---|
date | Wed, 01 Jan 2014 00:04:40 -0700 |
parents | 3a09cc104f4c |
children | ab58d4870664 |
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/* Test of opening a file stream. Copyright (C) 2007-2014 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/>. */ /* Written by Bruno Haible <bruno@clisp.org>, 2007. */ #include <config.h> #include <stdio.h> #include "signature.h" SIGNATURE_CHECK (freopen, FILE *, (char const *, char const *, FILE *)); #include <errno.h> #include <unistd.h> #include "macros.h" int main () { const char *filename = "test-freopen.txt"; ASSERT (freopen ("/dev/null", "r", stdin) != NULL); #if 0 /* freopen (NULL, ...) is unsupported on most platforms. */ /* Test that freopen() sets errno if someone else closes the stream fd behind the back of stdio. */ { FILE *fp = fopen (filename, "w+"); ASSERT (fp != NULL); ASSERT (close (fileno (fp)) == 0); errno = 0; ASSERT (freopen (NULL, "r", fp) == NULL); perror("freopen"); ASSERT (errno == EBADF); fclose (fp); } /* Test that freopen() sets errno if the stream was constructed with an invalid file descriptor. */ { FILE *fp = fdopen (-1, "w+"); if (fp != NULL) { errno = 0; ASSERT (freopen (NULL, "r", fp) == NULL); ASSERT (errno == EBADF); fclose (fp); } } { FILE *fp; close (99); fp = fdopen (99, "w+"); if (fp != NULL) { errno = 0; ASSERT (freopen (NULL, "r", fp) == NULL); ASSERT (errno == EBADF); fclose (fp); } } #endif /* Clean up. */ unlink (filename); return 0; }