--- a/hotspot/src/share/vm/oops/instanceKlass.cpp	Wed Nov 13 01:50:14 2013 -0800
+++ b/hotspot/src/share/vm/oops/instanceKlass.cpp	Wed Nov 13 13:45:50 2013 +0100
@@ -2211,6 +2211,10 @@
            data = mdo->next_data(data)) {
         data->clean_weak_klass_links(is_alive);
       }
+      ParametersTypeData* parameters = mdo->parameters_type_data();
+      if (parameters != NULL) {
+        parameters->clean_weak_klass_links(is_alive);
+      }
     }
   }
 }