v8/test/mjsunit/regress/regress-crbug-629062.js

// 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 foo(x) {
  return 1 + (1 == 0 && undefined);
};
%PrepareFunctionForOptimization(foo);
foo(false);
foo(false);
%OptimizeFunctionOnNextCall(foo);
foo(true);