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authorUlrich Drepper <drepper@redhat.com>2009-01-08 00:47:30 +0000
committerUlrich Drepper <drepper@redhat.com>2009-01-08 00:47:30 +0000
commit76c7f2cd8a68653b4fd60c1f12bf0b8b824209f1 (patch)
tree7b00d01fa07a21540e5572aec060ce484be4f665 /posix/regexec.c
parentbdb56bacd57070eced9998569ffe3f3c37ef5964 (diff)
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* posix/regexec.c (prune_impossible_nodes): Handle sifted_states[0] being NULL also if there are no backreferences. * posix/rxspencer/tests: Add testcases.
Diffstat (limited to 'posix/regexec.c')
-rw-r--r--posix/regexec.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/posix/regexec.c b/posix/regexec.c
index 135efe7..7bf0c08 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -1,5 +1,5 @@
/* Extended regular expression matching and search library.
- Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
@@ -1004,6 +1004,11 @@ prune_impossible_nodes (mctx)
re_node_set_free (&sctx.limits);
if (BE (ret != REG_NOERROR, 0))
goto free_return;
+ if (sifted_states[0] == NULL)
+ {
+ ret = REG_NOMATCH;
+ goto free_return;
+ }
}
re_free (mctx->state_log);
mctx->state_log = sifted_states;