--- a/src/hotspot/share/gc/z/zValue.hpp	Thu Sep 20 14:04:43 2018 +0200
+++ b/src/hotspot/share/gc/z/zValue.hpp	Thu Sep 20 14:04:44 2018 +0200
@@ -131,7 +131,7 @@
 class ZValueIterator;
 
 template <typename S, typename T>
-class ZValue {
+class ZValue : public CHeapObj<mtGC> {
 private:
   const uintptr_t _addr;