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Recognize ill-formed { } expressions in regcomp.

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This commit is contained in:
Ulrich Drepper 2009-08-23 15:22:00 -07:00
parent bdc7f5d76b
commit 52db8039f5
2 changed files with 4 additions and 1 deletions
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ChangeLog
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@ -1,5 +1,8 @@
2009-08-23 Ulrich Drepper <drepper@redhat.com>
* posix/regcomp.c (parse_dup_op): Verify the expression is correctly
terminated.
* posix/unistd.h: Define _POSIX_VERSION and _POSIX2_* correctly if
older POSIX versions are selected.

2
posix/regcomp.c
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@ -2481,7 +2481,7 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa,
return elem;
}
if (BE (end != -1 && start > end, 0))
if (BE ((end != -1 && start > end) || token->type != OP_CLOSE_DUP_NUM, 0))
{
/* First number greater than second. */
*err = REG_BADBR;