--- old/src/share/classes/java/lang/Throwable.java	2011-04-28 13:06:50.000000000 -0700
+++ new/src/share/classes/java/lang/Throwable.java	2011-04-28 13:06:50.000000000 -0700
@@ -958,18 +958,15 @@
         // trace field is a valid value indicating the stack trace
         // should not be set.
         getOurStackTrace();
-        ObjectOutputStream.PutField fields = s.putFields();
 
-        fields.put("detailMessage", detailMessage);
-        fields.put("cause", cause);
-        // Serialize a null stacktrace using the stack trace sentinel.
-        if (stackTrace == null)
-            fields.put("stackTrace", SentinelHolder.STACK_TRACE_SENTINEL);
-        else
-            fields.put("stackTrace", stackTrace);
-        fields.put("suppressedExceptions", suppressedExceptions);
-
-        s.writeFields();
+        StackTraceElement[] oldStackTrace = stackTrace;
+        try {
+            if (stackTrace == null)
+                stackTrace = SentinelHolder.STACK_TRACE_SENTINEL;
+            s.defaultWriteObject();
+        } finally {
+            stackTrace = oldStackTrace;
+        }
     }
 
     /**