--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/runtime/Test6826736.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,81 @@
+/*
+ * 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);
+        }
+    }
+}