// Copyright 2014 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.

function __f_17(__v_9) {
 var __v_10 = 0;
 var count = 10000;
 while (count-- != 0) {
   __v_9.push(0);
   if (++__v_10 >= 2) return __v_9;
   __v_10 = {};
 }
}

__v_14 = __f_17([]);
