// 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.


Debug = debug.Debug;
Debug.setListener(function() {});

function f() {
  for (var i = 0; i < 100; i++) %OptimizeOsr();
}

Debug.setBreakPoint(f, 0, 0);
f();
f();
Debug.setListener(null);
