v8/test/mjsunit/regress/regress-358059.js

// Copyright 2014 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(a, b) {
  return b + a.x++;
};
%PrepareFunctionForOptimization(f);
var o = {};
o.__defineGetter__('x', function() {
  return 1;
});
assertEquals(4, f(o, 3));
assertEquals(4, f(o, 3));
%OptimizeFunctionOnNextCall(f);
assertEquals(4, f(o, 3));