/*

 * Copyright (c) 2013, 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test

 * @bug 8007722

 * @summary GetAndSetP's MachNode should capture bottom type

 * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8007722

 *

 */

import java.util.concurrent.atomic.*;

public class Test8007722 {

    int i;

    static AtomicReference<Test8007722> ref;

    static int test(Test8007722 new_obj) {

        Test8007722 o = ref.getAndSet(new_obj);

        int ret = o.i;

        o.i = 5;

        return ret;

    }

    static public void main(String[] args) {

        Test8007722 obj = new Test8007722();

        ref = new AtomicReference<Test8007722>(obj);

        for (int i = 0; i < 20000; i++) {

            test(obj);

        }

        System.out.println("PASSED");

    }

}