src/hotspot/share/opto/graphKit.cpp

*** 3697,3706 ****
--- 3697,3707 ----
          const TypePtr* telemref = oop_type->add_offset(Type::OffsetBot);
          int            elemidx  = C->get_alias_index(telemref);
          hook_memory_on_init(*this, elemidx, minit_in, minit_out);
        }
      } else if (oop_type->isa_instptr()) {
+       set_memory(minit_out, C->get_alias_index(oop_type)); // mark word
        ciInstanceKlass* ik = oop_type->klass()->as_instance_klass();
        for (int i = 0, len = ik->nof_nonstatic_fields(); i < len; i++) {
          ciField* field = ik->nonstatic_field_at(i);
          if (field->offset() >= TrackedInitializationLimit * HeapWordSize)
            continue;  // do not bother to track really large numbers of fields