--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/c2/Test6695810.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2008, 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 6695810
+ * @summary null oop passed to encode_heap_oop_not_null
+ *
+ * @run main/othervm -Xbatch compiler.c2.Test6695810
+ */
+
+package compiler.c2;
+
+public class Test6695810 {
+    Test6695810 _t;
+
+    static void test(Test6695810 t1, Test6695810 t2) {
+        if (t2 != null)
+            t1._t = t2;
+
+        if (t2 != null)
+            t1._t = t2;
+    }
+
+    public static void main(String[] args) {
+        Test6695810 t = new Test6695810();
+        for (int i = 0; i < 50; i++) {
+            for (int j = 0; j < 100; j++) {
+                test(t, t);
+            }
+            test(t, null);
+        }
+        for (int i = 0; i < 10000; i++) {
+            test(t, t);
+        }
+        test(t, null);
+    }
+}