--- old/src/com/sun/xml/internal/stream/XMLEventReaderImpl.java	2012-06-11 16:08:35.843554600 -0700
+++ new/src/com/sun/xml/internal/stream/XMLEventReaderImpl.java	2012-06-11 16:08:34.884024900 -0700
@@ -248,8 +248,10 @@
             object = nextEvent();
         }catch(XMLStreamException streamException){
             fLastEvent = null ;
-            //xxx: what should be done in this case ?
-            throw new NoSuchElementException();
+            //don't swallow the cause
+            NoSuchElementException e = new NoSuchElementException(streamException.getMessage());
+            e.initCause(streamException.getCause());
+            throw e;
         }
         return object;
     }