merges the 2/2 of r21727 from trunk into ruby_1_9_1.

* gc.c (define_final): freezes or hides internal values.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@21821 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 1 deletions

diff --git a/gc.c b/gc.c
index 2d4da31a7..002abb3bc 100644
--- a/gc.c
+++ b/gc.c
@@ -2306,7 +2306,9 @@ define_final(int argc, VALUE *argv, VALUE os)
 	rb_ary_push(table, block);
     }
     else {
-	st_add_direct(finalizer_table, obj, rb_ary_new3(1, block));
+	table = rb_ary_new3(1, block);
+	RBASIC(table)->klass = 0;
+	st_add_direct(finalizer_table, obj, table);
     }
     return block;
 }