--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/security/tools/jarsigner/DiffEnd.java	Fri Apr 12 13:35:23 2019 +0800
@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2010, 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 6948909
+ * @summary Jarsigner removes MANIFEST.MF info for badly packages jar's
+ * @library /test/lib
+ */
+
+import jdk.test.lib.Asserts;
+import jdk.test.lib.SecurityTools;
+import jdk.test.lib.process.OutputAnalyzer;
+
+import java.io.FileOutputStream;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.jar.Attributes;
+import java.util.jar.JarFile;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+public class DiffEnd {
+
+    static void check() throws Exception {
+        SecurityTools.jarsigner("-keystore "
+                + Path.of(System.getProperty("test.src"), "JarSigning.keystore")
+                .toString()
+                + " -storepass bbbbbb -digestalg SHA1"
+                + " -signedjar diffend.new.jar diffend.jar c");
+
+        try (JarFile jf = new JarFile("diffend.new.jar")) {
+            Asserts.assertTrue(jf.getManifest().getMainAttributes()
+                    .containsKey(new Attributes.Name("Today")));
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+
+        // A MANIFEST.MF using \n as newlines and no double newlines at the end
+        byte[] manifest =
+                ("Manifest-Version: 1.0\n"
+                        + "Created-By: 1.7.0-internal (Sun Microsystems Inc.)\n"
+                        + "Today: Monday\n").getBytes(StandardCharsets.UTF_8);
+
+        // With the fake .RSA file, to trigger the if (wasSigned) block
+        try (FileOutputStream fos = new FileOutputStream("diffend.jar");
+             ZipOutputStream zos = new ZipOutputStream(fos)) {
+            zos.putNextEntry(new ZipEntry("META-INF/MANIFEST.MF"));
+            zos.write(manifest);
+            zos.putNextEntry(new ZipEntry("META-INF/x.RSA"));
+            zos.putNextEntry(new ZipEntry("1"));
+            zos.write(new byte[10]);
+        }
+
+        check();
+
+        // Without the fake .RSA file, to trigger the else block
+        try (FileOutputStream fos = new FileOutputStream("diffend.jar");
+             ZipOutputStream zos = new ZipOutputStream(fos)) {
+            zos.putNextEntry(new ZipEntry("META-INF/MANIFEST.MF"));
+            zos.write(manifest);
+            zos.putNextEntry(new ZipEntry("1"));
+            zos.write(new byte[10]);
+        }
+
+        check();
+    }
+}