--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/math/BigDecimal/SerializationTests.java	Mon Jan 26 19:49:26 2009 -0800
@@ -0,0 +1,76 @@
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/*
+ * @test
+ * @bug 6177836
+ * @summary Verify BigDecimal objects with collapsed values are serialized properly.
+ * @author Joseph D. Darcy
+ */
+
+import java.math.*;
+import java.io.*;
+
+public class SerializationTests {
+
+    static void checkSerialForm(BigDecimal bd) throws Exception  {
+        ByteArrayOutputStream bos = new ByteArrayOutputStream();
+        ObjectOutputStream oos = new ObjectOutputStream(bos);
+        oos.writeObject(bd);
+        oos.flush();
+        oos.close();
+        ObjectInputStream ois = new
+            ObjectInputStream(new ByteArrayInputStream(bos.toByteArray()));
+        BigDecimal tmp = (BigDecimal)ois.readObject();
+
+        if (!bd.equals(tmp) ||
+            bd.hashCode() != tmp.hashCode()) {
+            System.err.print("  original : " + bd);
+            System.err.println(" (hash: 0x" + Integer.toHexString(bd.hashCode()) + ")");
+            System.err.print("serialized : " + tmp);
+            System.err.println(" (hash: 0x" + Integer.toHexString(tmp.hashCode()) + ")");
+            throw new RuntimeException("Bad serial roundtrip");
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        BigDecimal values[] = {
+            BigDecimal.ZERO,
+            BigDecimal.ONE,
+            BigDecimal.TEN,
+            new BigDecimal(0),
+            new BigDecimal(1),
+            new BigDecimal(10),
+            new BigDecimal(Integer.MAX_VALUE),
+            new BigDecimal(Long.MAX_VALUE-1),
+            new BigDecimal(BigInteger.valueOf(1), 1),
+            new BigDecimal(BigInteger.valueOf(100), 50),
+        };
+
+        for(BigDecimal value : values) {
+            checkSerialForm(value);
+            checkSerialForm(value.negate());
+        }
+
+    }
+}