* re.c (rb_reg_search): should clear last_match if pos is out of

  string range.

* string.c (rb_str_index_m): ditto.

* string.c (rb_str_rindex): ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_6@2224 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 1 deletions

diff --git a/re.c b/re.c
index 9dc323e933..ae09f8b673 100644
--- a/re.c
+++ b/re.c
@@ -595,7 +595,10 @@ rb_reg_search(re, str, pos, reverse)
     static struct re_registers regs;
     int range;
 
-    if (pos > RSTRING(str)->len) return -1;
+    if (pos > RSTRING(str)->len) {
+	rb_backref_set(Qnil);
+	return -1;
+    }
 
     rb_reg_check(re);
     if (may_need_recompile) rb_reg_prepare_re(re);