--- /dev/null	2016-10-20 16:47:49.000000000 +0800
+++ new/test/java/io/FilePermission/Invalid.java	2016-10-20 16:47:49.000000000 +0800
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2016, 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 8167646
+ * @summary Better invalid FilePermission
+ * @library /test/lib
+ */
+
+import jdk.test.lib.Asserts;
+
+import java.io.FilePermission;
+
+public class Invalid {
+
+    public static void main(String args[]) throws Exception {
+
+        // Normal
+        FilePermission fp = new FilePermission("a", "read");
+
+        // Invalid
+        FilePermission fp1 = new FilePermission("a\000", "read");
+        FilePermission fp2 = new FilePermission("a\000", "read");
+        FilePermission fp3 = new FilePermission("b\000", "read");
+
+        // Invalid equals to itself
+        Asserts.assertEQ(fp1, fp1);
+
+        // and not equals to anything else, including other invalid ones
+        Asserts.assertNE(fp, fp1);
+        Asserts.assertNE(fp1, fp);
+        Asserts.assertNE(fp1, fp2);
+        Asserts.assertNE(fp1, fp3);
+
+        // Invalid implies itself
+        Asserts.assertTrue(fp1.implies(fp1));
+
+        // and not implies or implied by anything else, including other
+        // invalid ones
+        Asserts.assertFalse(fp.implies(fp1));
+        Asserts.assertFalse(fp1.implies(fp));
+        Asserts.assertFalse(fp1.implies(fp2));
+        Asserts.assertFalse(fp1.implies(fp3));
+    }
+}