JSTests/ChakraCore/test/fieldopts/finaltypebug.js

//-------------------------------------------------------------------------------------------------------
// Copyright (C) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE.txt file in the project root for full license information.
//-------------------------------------------------------------------------------------------------------

Object.prototype.foo = function () { return 2; };
function construct(z) {
    if (z) {
        this.a = 1;
    }
    this.b = this.foo();
}
new construct(1);
new construct(1);
var c = new construct(1);
WScript.Echo(c.a);
WScript.Echo(c.b);