--- old/src/hotspot/share/gc/z/zHeap.hpp	2020-07-22 15:42:23.000000000 -0700
+++ new/src/hotspot/share/gc/z/zHeap.hpp	2020-07-22 15:42:23.000000000 -0700
@@ -100,6 +100,7 @@
   void set_boost_worker_threads(bool boost);
   void threads_do(ThreadClosure* tc) const;
 
+  void run_task(AbstractGangTask* task);
   // Reference processing
   ReferenceDiscoverer* reference_discoverer();
   void set_soft_reference_policy(bool clear);