AuroraMiddleware/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-21 20:40:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

* posix/regcomp.c (lower_subexp): Do not optimize empty

Browse Source 
subexpressions even with REG_NOSUB.
	* posix/rxspencer/tests: Add a previously failing testcase.
This commit is contained in:
Ulrich Drepper 2005-02-22 05:07:20 +00:00
parent e13e33e279
commit 744eb12b7b
3 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
ChangeLog
View File

@ -1,3 +1,9 @@
2005-02-10 Paolo Bonzini <bonzini@gnu.org>
* posix/regcomp.c (lower_subexp): Do not optimize empty
subexpressions even with REG_NOSUB.
* posix/rxspencer/tests: Add a previously failing testcase.
2005-02-21 Alan Modra <amodra@bigpond.net.au>
* elf/dl-reloc.c (_dl_nothread_init_static_tls): Assert that dtv

5
posix/regcomp.c
View File

@ -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;

1
posix/rxspencer/tests
View File

@ -376,6 +376,7 @@ a(b?c)+d - accd accd
a[bc]d - xyzaaabcaababdacd abd
a[ab]c - aaabc abc
abc s abc abc
() s abc @abc
a* & b @b
# Let's have some fun -- try to match a C comment.