/*
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * 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
 * @summary Unsafe access to an array is wrongly marked as mismatched
 * @modules java.base/jdk.internal.misc
 * @library /testlibrary /test/lib
 *
 * @run main/othervm -XX:-UseOnStackReplacement -XX:-BackgroundCompilation -XX:-TieredCompilation
 *      compiler.intrinsics.unsafe.TestUnsafeMismatchedArrayFieldAccess
 */

package compiler.intrinsics.unsafe;

import jdk.internal.misc.Unsafe;
import jdk.test.lib.Utils;

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();
        }
    }
}