void CollectedHeap::post_allocation_install_obj_klass(KlassHandle klass,
                                                       oop obj,
                                                       int size) {

  {- -------------------------------------------
  (1) (assert)
      ---------------------------------------- -}

      // These asserts are kind of complicated because of klassKlass
      // and the beginning of the world.
      assert(klass() != NULL || !Universe::is_fully_initialized(), "NULL klass");
      assert(klass() == NULL || klass()->is_klass(), "not a klass");
      assert(klass() == NULL || klass()->klass_part() != NULL, "not a klass");
      assert(obj != NULL, "NULL object pointer");

  {- -------------------------------------------
  (1) klass フィールドを初期化する
      ---------------------------------------- -}

      obj->set_klass(klass());

  {- -------------------------------------------
  (1) (assert)
      ---------------------------------------- -}

      assert(!Universe::is_fully_initialized() || obj->blueprint() != NULL,
             "missing blueprint");
    }