/*

 * 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.

 *

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 */

/**

 * @test

 * @bug 8173147

 * @summary Loads generated at uncommon trap from eliminated arraycopy have incorrect memory state

 * @run main/othervm -XX:CompileOnly=TestArrayCopyUNCBadMem::test -Xcomp TestArrayCopyUNCBadMem

 *

 */

public class TestArrayCopyUNCBadMem {

    volatile static int field;

    static class unloaded {

        static int dummy;

    }

    static int test(int[] input) {

        int[] alloc = new int[10];

        System.arraycopy(input, 0, alloc, 0, 10);

        // membars to have anti-dependence edges and make scheduling

        // fail

        field = 0x42;

        // uncommon trap

        unloaded.dummy = 0x42;

        return alloc[0] + alloc[1];

    }

    public static void main(String[] args) {

        int[] array = new int[10];

        System.arraycopy(array, 0, array, 0, 0); // load System class

        test(array);

    }

}