--- old/src/share/classes/java/io/SerialCallbackContext.java	2014-01-31 14:00:21.308068405 +0000
+++ new/src/share/classes/java/io/SerialCallbackContext.java	2014-01-31 14:00:21.128068412 +0000
@@ -60,7 +60,7 @@
         return desc;
     }
 
-    private void checkAndSetUsed() throws NotActiveException {
+    public void checkAndSetUsed() throws NotActiveException {
         if (thread != Thread.currentThread()) {
              throw new NotActiveException(
               "not in readObject invocation or fields already read");