--- old/src/share/vm/gc/shared/workgroup.hpp	2015-06-12 14:52:04.479085985 +0200
+++ new/src/share/vm/gc/shared/workgroup.hpp	2015-06-12 14:52:04.351081820 +0200
@@ -182,7 +182,8 @@
   WorkGang(const char* name,
            uint workers,
            bool are_GC_task_threads,
-           bool are_ConcurrentGC_threads);
+           bool are_ConcurrentGC_threads,
+           GangTaskDispatcher* dispatcher = NULL);
 
   // Run a task, returns when the task is done.
   virtual void run_task(AbstractGangTask* task);