diff -r f48312257bc6 -r 8de62c4af8c7 test/jdk/sun/security/tools/keytool/NoExtNPE.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/security/tools/keytool/NoExtNPE.java	Fri Apr 12 13:35:23 2019 +0800
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2009, 2019, 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 6813402
+ * @summary keytool cannot -printcert entries without extensions
+ * @library /test/lib
+ */
+
+import jdk.test.lib.SecurityTools;
+
+import java.nio.file.Path;
+
+public class NoExtNPE {
+    public static void main(String[] args) throws Exception {
+        SecurityTools.keytool("-list -v -keystore " +
+                Path.of(System.getProperty("test.src"), "CloneKeyAskPassword.jks")
+                + " -storepass test123").shouldHaveExitValue(0);
+    }
+}