src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp

*** 118,127 ****
--- 118,130 ----
        JvmtiExport::oops_do(&mark_and_push_closure);
        break;
  
      case system_dictionary:
        SystemDictionary::always_strong_oops_do(&mark_and_push_closure);
+       break;
+ 
+     case class_loader_data:
        ClassLoaderDataGraph::always_strong_oops_do(&mark_and_push_closure, &follow_klass_closure, true);
        break;
  
      case code_cache:
        // Do not treat nmethods as strong roots for mark/sweep, since we can unload them.