/*

 * Copyright (c) 2009, 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.

 *

 * 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 6826736

 * @summary CMS: core dump with -XX:+UseCompressedOops

 *

 * @run main/othervm/timeout=600 -XX:+IgnoreUnrecognizedVMOptions -Xbatch

 *      -XX:+ScavengeALot -XX:+UseCompressedOops -XX:HeapBaseMinAddress=32g

 *      -XX:CompileThreshold=100 -XX:-BlockLayoutRotateLoops

 *      -XX:LoopUnrollLimit=0 -Xmx256m -XX:ParallelGCThreads=4

 *      -XX:CompileCommand=compileonly,compiler.runtime.Test6826736::test

 *      compiler.runtime.Test6826736

 */

package compiler.runtime;

public class Test6826736 {

    int[] arr;

    int[] arr2;

    int test(int r) {

        for (int i = 0; i < 100; i++) {

            for (int j = i; j < 100; j++) {

               int a = 0;

               for (long k = 0; k < 100; k++) {

                  a += k;

               }

               if (arr != null)

                   a = arr[j];

               r += a;

            }

        }

        return r;

    }

    public static void main(String[] args) {

        int r = 0;

        Test6826736 t = new Test6826736();

        for (int i = 0; i < 100; i++) {

            t.arr = new int[100];

            r = t.test(r);

        }

        System.out.println("Warmup 1 is done.");

        for (int i = 0; i < 100; i++) {

            t.arr = null;

            r = t.test(r);

        }

        System.out.println("Warmup 2 is done.");

        for (int i = 0; i < 100; i++) {

            t.arr = new int[100];

            r = t.test(r);

        }

        System.out.println("Warmup is done.");

        for (int i = 0; i < 100; i++) {

            t.arr = new int[1000000];

            t.arr = null;

            r = t.test(r);

        }

    }

}