src/v8/test/mjsunit/regress/regress-774824.js

// 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

function f() {
  var a = new Set().values();
  a.outOfObjectProperty = undefined;
  %DeoptimizeNow();
  return !a;
};
%PrepareFunctionForOptimization(f);
f();
f();
%OptimizeFunctionOnNextCall(f);
f();