objArrayOop instanceKlass::allocate_objArray(int n, int length, TRAPS) {

  {- -------------------------------------------
  (1) もし指定された配列長(= length)が負値であれば, java_lang_NegativeArraySizeException.
      ---------------------------------------- -}

      if (length < 0) THROW_0(vmSymbols::java_lang_NegativeArraySizeException());

  {- -------------------------------------------
  (1) もし指定された配列長が最大長(= typeArrayKlass::max_length())を超えていれば, OutOfMemoryError.
      ---------------------------------------- -}

      if (length > arrayOopDesc::max_array_length(T_OBJECT)) {
        report_java_out_of_memory("Requested array size exceeds VM limit");
        THROW_OOP_0(Universe::out_of_memory_error_array_size());
      }

  {- -------------------------------------------
  (1) (変数宣言など)
      ---------------------------------------- -}

      int size = objArrayOopDesc::object_size(length);
      klassOop ak = array_klass(n, CHECK_NULL);
      KlassHandle h_ak (THREAD, ak);

  {- -------------------------------------------
  (1) CollectedHeap::array_allocate() でメモリを確保し, リターンする.
      ---------------------------------------- -}

      objArrayOop o =
        (objArrayOop)CollectedHeap::array_allocate(h_ak, size, length, CHECK_NULL);
      return o;
    }