// Copyright 2016 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
function f(x) { return x === +x; }
assertEquals(false, f(undefined));
assertEquals(false, f(undefined));
%OptimizeFunctionOnNextCall(f);
assertEquals(false, f(undefined)); // Interestingly this fails right away.