/*

 * Copyright (c) 2017, Red Hat, Inc. 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 8182036

 * @summary Load from initializing arraycopy uses wrong memory state

 *

 * @run main/othervm -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:+UnlockDiagnosticVMOptions -XX:+IgnoreUnrecognizedVMOptions -XX:+StressGCM -XX:+StressLCM TestInitializingACLoadWithBadMem

 *

 */

import java.util.Arrays;

public class TestInitializingACLoadWithBadMem {

    static Object test_dummy;

    static int test1() {

        int[] src = new int[10];

        test_dummy = src;

        int[] dst = new int[10];

        src[1] = 0x42;

        // arraycopy generates a load from src/store to dst which must

        // be after the store to src above.

        System.arraycopy(src, 1, dst, 1, 9);

        return dst[1];

    }

    static public void main(String[] args) {

        int[] src = new int[10];

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

            int res = test1();

            if (res != 0x42) {

                throw new RuntimeException("bad result: " + res + " != " + 0x42);

            }

        }

    }

}