src/v8/test/mjsunit/regress/regress-crbug-503968.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) {
  function __f_0() { this.s = new Object(); }
  function __f_1() {
    this.l = [new __f_0, new __f_0];
  }
  __v_6 = new __f_1;
  var __v_9 = new Worker('', {type: 'string'});
  __v_9.postMessage(__v_6);
}