--- a/src/hotspot/share/gc/parallel/psCompactionManager.hpp	Thu Oct 17 20:27:44 2019 +0100
+++ b/src/hotspot/share/gc/parallel/psCompactionManager.hpp	Thu Oct 17 20:53:35 2019 +0100
@@ -43,7 +43,9 @@
   friend class CompactionWithStealingTask;
   friend class UpdateAndFillClosure;
   friend class RefProcTaskExecutor;
-  friend class IdleGCTask;
+  friend class PCRefProcTask;
+  friend class MarkFromRootsTask;
+  friend class UpdateDensePrefixAndCompactionTask;
 
  public: