src/hotspot/share/gc/parallel/pcTasks.cpp

CLD claiming

     case system_dictionary:
       SystemDictionary::oops_do(&mark_and_push_closure);
       break;
 
     case class_loader_data: {
-        CLDToOopClosure cld_closure(&mark_and_push_closure);
+        CLDToOopClosure cld_closure(&mark_and_push_closure, ClassLoaderData::_claim_value_strong);
         ClassLoaderDataGraph::always_strong_cld_do(&cld_closure);
       }
       break;
 
     case code_cache: