src/hotspot/share/classfile/classLoaderData.cpp

*** 336,345 ****
--- 336,350 ----
  void ClassLoaderData::loaded_classes_do(KlassClosure* klass_closure) {
    // Lock-free access requires load_acquire
    for (Klass* k = OrderAccess::load_acquire(&_klasses); k != NULL; k = k->next_link()) {
      // Do not filter ArrayKlass oops here...
      if (k->is_array_klass() || (k->is_instance_klass() && InstanceKlass::cast(k)->is_loaded())) {
+ #ifdef ASSERT
+       oop m = k->java_mirror();
+       assert(m != NULL, "NULL mirror"); 
+       assert(m->is_a(SystemDictionary::Class_klass()), "invalid mirror");
+ #endif
        klass_closure->do_klass(k);
      }
    }
  }