src/v8/test/mjsunit/compiler/regress-731495.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() {
  global = "";
  global = global + "bar";
  return global;
};

%PrepareFunctionForOptimization(foo);
assertEquals(foo(), "bar");
%OptimizeFunctionOnNextCall(foo);
assertEquals(foo(), "bar");