* re.c (match_setter): it's OK to assign nil to $~.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_6@2313 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/re.c b/re.c
index ae09f8b673..b3e80646f4 100644
--- a/re.c
+++ b/re.c
@@ -1338,7 +1338,9 @@ static void
 match_setter(val)
     VALUE val;
 {
-    Check_Type(val, T_MATCH);
+    if (!NIL_P(val)) {
+	Check_Type(val, T_MATCH);
+    }
     rb_backref_set(val);
 }