add a test.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14630 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

bootstraptest/test_knownbug.rb

@@ -2,3 +2,9 @@
 # This test file concludes tests which point out known bugs.
 # So all tests will cause failure.
 #
+
+assert_equal 'ok', %q{
+  # this cause "called on terminated object".
+  ObjectSpace.each_object(Module) {|m| m.name.inspect }
+  :ok
+}