// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Flags: --harmony-species

'use strict';

var typedArray = new Int8Array(1);
var saved;
var called;
class TypedArraySubclass extends Int8Array {
  constructor(x) {
    super(x);
    called = true;
    saved = x;
  }
}
typedArray.constructor = TypedArraySubclass
typedArray.map(function(){});

assertTrue(called);
assertEquals(saved, 1);
