/*

 * 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.

 *

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/**

 * @test

 * @bug 8142386

 * @library /testlibrary /test/lib

 * @summary Unsafe access to an array is wrongly marked as mismatched

 * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation TestUnsafeMismatchedArrayFieldAccess

 *

 */

import java.lang.reflect.*;

import jdk.test.lib.Utils;

import sun.misc.Unsafe;

public class TestUnsafeMismatchedArrayFieldAccess {

    private static final Unsafe UNSAFE = Utils.getUnsafe();

    static {

        try {

            array_offset = UNSAFE.objectFieldOffset(TestUnsafeMismatchedArrayFieldAccess.class.getDeclaredField("array"));

        }

        catch (Exception e) {

            throw new AssertionError(e);

        }

    }

    int[] array;

    static final long array_offset;

    void m() {

        UNSAFE.getObject(this, array_offset);

    }

    static public void main(String[] args) {

        TestUnsafeMismatchedArrayFieldAccess test = new TestUnsafeMismatchedArrayFieldAccess();

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

            test.m();

        }

    }

}