src/hotspot/share/gc/z/zHeap.hpp

rev 57138 : [mq]: 8234796-v3

@@ -37,10 +37,12 @@
 #include "gc/z/zWeakRootsProcessor.hpp"
 #include "gc/z/zServiceability.hpp"
 #include "gc/z/zUnload.hpp"
 #include "gc/z/zWorkers.hpp"
 
+class ThreadClosure;
+
 class ZHeap {
   friend class VMStructs;
 
 private:
   static ZHeap*       _heap;