src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/z/ZAddress.java

*** 59,69 ****
          VM vm = VM.getVM();
          if (vm.getOS().equals("solaris") && vm.getCPU().equals("sparc")) {
              value |= ZGlobals.ZAddressSpaceStart;
          }
  
!         return ZOop.to_address(value);
      }
  
      static Address good(Address value) {
          return address(offset(value) | ZGlobals.ZAddressGoodMask());
      }
--- 59,69 ----
          VM vm = VM.getVM();
          if (vm.getOS().equals("solaris") && vm.getCPU().equals("sparc")) {
              value |= ZGlobals.ZAddressSpaceStart;
          }
  
!         return ZUtils.longToAddress(value);
      }
  
      static Address good(Address value) {
          return address(offset(value) | ZGlobals.ZAddressGoodMask());
      }