--- a/jdk/src/share/classes/com/sun/org/apache/xml/internal/security/c14n/implementations/Canonicalizer20010315Excl.java	Sat Oct 12 10:22:43 2013 +0800
+++ b/jdk/src/share/classes/com/sun/org/apache/xml/internal/security/c14n/implementations/Canonicalizer20010315Excl.java	Sat Oct 12 20:46:35 2013 -0700
@@ -292,7 +292,7 @@
             if (xmlns != null && !isVisible(xmlns)) {
                 // There is a definition but the xmlns is not selected by the
                 // xpath. then xmlns=""
-                ns.addMapping(XMLNS, "", nullNode);
+                ns.addMapping(XMLNS, "", getNullNode(xmlns.getOwnerDocument()));
             }
 
             String prefix = null;