kvn@1293: /*
trims@1907:  * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
kvn@1293:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
kvn@1293:  *
kvn@1293:  * This code is free software; you can redistribute it and/or modify it
kvn@1293:  * under the terms of the GNU General Public License version 2 only, as
kvn@1293:  * published by the Free Software Foundation.
kvn@1293:  *
kvn@1293:  * This code is distributed in the hope that it will be useful, but WITHOUT
kvn@1293:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
kvn@1293:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
kvn@1293:  * version 2 for more details (a copy is included in the LICENSE file that
kvn@1293:  * accompanied this code).
kvn@1293:  *
kvn@1293:  * You should have received a copy of the GNU General Public License version
kvn@1293:  * 2 along with this work; if not, write to the Free Software Foundation,
kvn@1293:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
kvn@1293:  *
trims@1907:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907:  * or visit www.oracle.com if you need additional information or have any
trims@1907:  * questions.
kvn@1293:  *
kvn@1293:  */
kvn@1293: 
kvn@1293: /**
kvn@1293:  * @test
kvn@1293:  * @bug 6826736
kvn@1293:  * @summary CMS: core dump with -XX:+UseCompressedOops
kvn@1293:  *
anoll@6315:  * @run main/othervm/timeout=600 -XX:+IgnoreUnrecognizedVMOptions -Xbatch -XX:+ScavengeALot -XX:+UseCompressedOops -XX:HeapBaseMinAddress=32g -XX:CompileThreshold=100 -XX:CompileOnly=Test.test -XX:-BlockLayoutRotateLoops -XX:LoopUnrollLimit=0 -Xmx256m -XX:ParallelGCThreads=4 Test
kvn@1293:  */
kvn@1293: 
kvn@1293: public class Test {
kvn@1293:     int[] arr;
kvn@1293:     int[] arr2;
kvn@1293:     int test(int r) {
kvn@1293:         for (int i = 0; i < 100; i++) {
kvn@1293:             for (int j = i; j < 100; j++) {
kvn@1293:                int a = 0;
kvn@1293:                for (long k = 0; k < 100; k++) {
kvn@1293:                   a += k;
kvn@1293:                }
kvn@1293:                if (arr != null)
kvn@1293:                    a = arr[j];
kvn@1293:                r += a;
kvn@1293:             }
kvn@1293:         }
kvn@1293:         return r;
kvn@1293:     }
kvn@1293: 
kvn@1293:     public static void main(String[] args) {
kvn@1293:         int r = 0;
kvn@1293:         Test t = new Test();
kvn@1293:         for (int i = 0; i < 100; i++) {
kvn@1293:             t.arr = new int[100];
kvn@1293:             r = t.test(r);
kvn@1293:         }
kvn@1293:         System.out.println("Warmup 1 is done.");
kvn@1293:         for (int i = 0; i < 100; i++) {
kvn@1293:             t.arr = null;
kvn@1293:             r = t.test(r);
kvn@1293:         }
kvn@1293:         System.out.println("Warmup 2 is done.");
kvn@1293:         for (int i = 0; i < 100; i++) {
kvn@1293:             t.arr = new int[100];
kvn@1293:             r = t.test(r);
kvn@1293:         }
kvn@1293:         System.out.println("Warmup is done.");
kvn@1293:         for (int i = 0; i < 100; i++) {
kvn@1293:             t.arr = new int[1000000];
kvn@1293:             t.arr = null;
kvn@1293:             r = t.test(r);
kvn@1293:         }
kvn@1293:     }
kvn@1293: }