glibc/misc/tst-mntent-blank-corrupt.c

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/* Make sure blank lines does not cause memory corruption BZ #18887.
Copyright (C) 2009-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <mntent.h>
#include <stdio.h>
#include <string.h>
/* Make sure blank lines don't trigger memory corruption. This doesn't happen
for all targets though, so it's a best effort test BZ #18887. */
static int
do_test (void)
{
FILE *fp;
fp = tmpfile ();
fputs ("\n \n/foo\\040dir /bar\\040dir auto bind \t \n", fp);
rewind (fp);
/* The corruption happens here ... */
getmntent (fp);
/* ... but trigers here. */
endmntent (fp);
/* If the test failed, we would crash, and not hit this point. */
return 0;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"