diff -r 4ebc2e2fb97c -r 71c04702a3d5 test/jdk/sun/security/krb5/auto/NullRenewUntil.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/security/krb5/auto/NullRenewUntil.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2017, 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 8186576
+ * @summary KerberosTicket does not properly handle renewable tickets
+ *          at the end of their lifetime
+ * @library /test/lib
+ * @compile -XDignore.symbol.file NullRenewUntil.java
+ * @run main/othervm -Dtest.set.null.renew NullRenewUntil
+ */
+
+import jdk.test.lib.Asserts;
+import sun.security.krb5.Config;
+
+import javax.security.auth.kerberos.KerberosTicket;
+
+public class NullRenewUntil {
+
+    public static void main(String[] args) throws Exception {
+
+        OneKDC kdc = new OneKDC(null);
+
+        KDC.saveConfig(OneKDC.KRB5_CONF, kdc,
+                "ticket_lifetime = 10s",
+                "renew_lifetime = 11s");
+        Config.refresh();
+
+        KerberosTicket ticket = Context
+                .fromUserPass(OneKDC.USER, OneKDC.PASS, false).s()
+                .getPrivateCredentials(KerberosTicket.class).iterator().next();
+
+        System.out.println(ticket);
+        Asserts.assertTrue(ticket.getRenewTill() != null, ticket.toString());
+
+        Thread.sleep(2000);
+
+        ticket.refresh();
+        System.out.println(ticket);
+        Asserts.assertTrue(ticket.getRenewTill() == null, ticket.toString());
+
+        Thread.sleep(2000);
+        ticket.refresh();
+        System.out.println(ticket);
+    }
+}