nashorn/test/script/basic/JDK-8074556.js

/*
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 * 
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 * 
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 * 
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * questions.
 */

/**
 * JDK-8074556: Functions should not share allocator maps
 *
 * @test
 * @run
 */

function A () {
    return this;
}

function B() {
    return this;
}

A.prototype.x = "x";
A.prototype.y = "y";
B.prototype.y = "y";  // same properties but different order
B.prototype.x = "x";

function test(o) {
    Assert.assertEquals(o.x, "x");
    Assert.assertEquals(o.y, "y");
}

test(new A());
test(new B());
test(new A());
test(new B());