--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/tools/pack200/PackChecksum.java	Thu Jun 19 18:07:02 2014 +0400
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.RandomAccessFile;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.jar.JarEntry;
+import java.util.jar.JarOutputStream;
+
+/*
+ * @test
+ * @bug 8000650
+ * @summary unpack200.exe should check gzip crc
+ * @compile -XDignore.symbol.file Utils.java PackChecksum.java
+ * @run main PackChecksum
+ * @author kizune
+ */
+public class PackChecksum {
+
+    public static void main(String... args) throws Exception {
+        testChecksum();
+    }
+
+    static void testChecksum() throws Exception {
+
+        // Create a fresh .jar file
+        File testFile = new File("src_tools.jar");
+        File testPack = new File("src_tools.pack.gz");
+        generateJar(testFile);
+        List<String> cmdsList = new ArrayList<>();
+
+        // Create .pack file
+        cmdsList.add(Utils.getPack200Cmd());
+        cmdsList.add(testPack.getName());
+        cmdsList.add(testFile.getName());
+        Utils.runExec(cmdsList);
+
+        // Mess up with the checksum of the packed file
+        RandomAccessFile raf = new RandomAccessFile(testPack, "rw");
+        raf.seek(raf.length() - 8);
+        int val = raf.readInt();
+        val = Integer.MAX_VALUE - val;
+        raf.seek(raf.length() - 8);
+        raf.writeInt(val);
+        raf.close();
+
+        File dstFile = new File("dst_tools.jar");
+        cmdsList.clear();
+        cmdsList.add(Utils.getUnpack200Cmd());
+        cmdsList.add(testPack.getName());
+        cmdsList.add(dstFile.getName());
+
+        boolean passed = false;
+        try {
+            Utils.runExec(cmdsList);
+        } catch (RuntimeException re) {
+            // unpack200 should exit with non-zero exit code
+            passed = true;
+        }
+
+        // tidy up
+        if (testFile.exists()) testFile.delete();
+        if (testPack.exists()) testPack.delete();
+        if (dstFile.exists()) dstFile.delete();
+        if (!passed) {
+            throw new Exception("File with incorrect CRC unpacked without the error.");
+        }
+    }
+
+    static void generateJar(File result) throws IOException {
+        if (result.exists()) {
+            result.delete();
+        }
+
+        try (JarOutputStream output = new JarOutputStream(new FileOutputStream(result)); ) {
+            for (int i = 0 ; i < 100 ; i++) {
+                JarEntry e = new JarEntry("F-" + i + ".txt");
+                output.putNextEntry(e);
+            }
+            output.flush();
+            output.close();
+        }
+    }
+
+}