Index: test/test_array.rb
===================================================================
--- test/test_array.rb	(revision 5033)
+++ test/test_array.rb	(working copy)
@@ -129,7 +129,7 @@
   
   def test_ary
     o = Object.new
-    def o.to_ary; end
+    def o.to_ary; []; end
     def o.==(o); true; end
     assert_equal(true, [].==(o))
   end