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| author | Jakub Jelinek <jakub@redhat.com> | 2005-03-03 13:34:35 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2005-03-03 13:34:35 +0000 |
| commit | d0fec8d06cc2234c8114b51f630466eff9d5f841 (patch) | |
| tree | 223a7fdae69137bd5670e59249442bc6a2db1ad1 /posix/regcomp.c | |
| parent | 00e4559b612f179492ff3721f86c92498894432f (diff) | |
Updated to fedora-glibc-20050302T1820
Diffstat (limited to 'posix/regcomp.c')
| -rw-r--r-- | posix/regcomp.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/posix/regcomp.c b/posix/regcomp.c index 1a5f7952c3..a7112cffdd 100644 --- a/posix/regcomp.c +++ b/posix/regcomp.c @@ -1321,6 +1321,11 @@ lower_subexp (err, preg, node) bin_tree_t *op, *cls, *tree1, *tree; if (preg->no_sub + /* We do not optimize empty subexpressions, because otherwise we may + have bad CONCAT nodes with NULL children. This is obviously not + very common, so we do not lose much. An example that triggers + this case is the sed "script" /\(\)/x. */ + && node->left != NULL && (node->token.opr.idx >= 8 * sizeof (dfa->used_bkref_map) || !(dfa->used_bkref_map & (1 << node->token.opr.idx)))) return node->left; |