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Diffstat (limited to 'misc/tst-mntent-blank-corrupt.c')
-rw-r--r-- | misc/tst-mntent-blank-corrupt.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/misc/tst-mntent-blank-corrupt.c b/misc/tst-mntent-blank-corrupt.c new file mode 100644 index 0000000..92266a3 --- /dev/null +++ b/misc/tst-mntent-blank-corrupt.c @@ -0,0 +1,45 @@ +/* Make sure blank lines does not cause memory corruption BZ #18887. + + Copyright (C) 2009-2015 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" |