// Copyright 2017 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: --allow-natives-syntax --verify-heap

function f(a) {
  a.x = 0;
  a[0] = 0.1;
  a.x = {};
}

f(new Array(1));
f(new Array(1));
f(new Array());

%OptimizeFunctionOnNextCall(f);
f(new Array(1));
