src/hotspot/share/interpreter/zero/bytecodeInterpreter.cpp

@@ -1997,14 +1997,16 @@
                  size_t hdr_size = oopDesc::header_size();
                  Copy::fill_to_words(result + hdr_size, obj_size - hdr_size, 0);
                }
  
                // Initialize header, mirrors MemAllocator.
+ #ifdef _LP64
+               oopDesc::release_set_mark(result, ik->prototype_header());
+ #else
                oopDesc::set_mark(result, markWord::prototype());
-               oopDesc::set_klass_gap(result, 0);
                oopDesc::release_set_klass(result, ik);
- 
+ #endif
                oop obj = cast_to_oop(result);
  
                // Must prevent reordering of stores for object initialization
                // with stores that publish the new object.
                OrderAccess::storestore();