src/v8/test/mjsunit/regress/regress-crbug-518747.js

// 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.

if (this.Worker) {
  Worker.prototype = 12;
  var __v_6 = new Worker('');
  __v_6.postMessage([]);
}