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 * 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 8273359
 *
 * @modules java.base/jdk.internal.misc:+open
 * @run main/othervm -Xbatch compiler.unsafe.AlignmentGapAccess
 */

package compiler.unsafe;

import jdk.internal.misc.Unsafe;

public class AlignmentGapAccess {
    private static final Unsafe UNSAFE = Unsafe.getUnsafe();

    static class A           { int  fa; }
    static class B extends A { byte fb; }

    static final long FA_OFFSET = UNSAFE.objectFieldOffset(A.class, "fa");
    static final long FB_OFFSET = UNSAFE.objectFieldOffset(B.class, "fb");

    static int test(B obj) {
        return UNSAFE.getInt(obj, FB_OFFSET + 1);
    }

    public static void main(String[] args) {
        for (int i = 0; i < 20_000; i++) {
            test(new B());
        }
        System.out.println("TEST PASSED");
    }
}