--- a/nashorn/src/jdk/nashorn/internal/objects/NativeURIError.java	Thu Jan 16 22:50:53 2014 +0530
+++ b/nashorn/src/jdk/nashorn/internal/objects/NativeURIError.java	Fri Jan 17 20:09:47 2014 +0530
@@ -54,6 +54,10 @@
     @Property(attributes = Attribute.NOT_ENUMERABLE, where = Where.PROTOTYPE)
     public Object message;
 
+    /** Nashorn extension: underlying exception */
+    @Property(attributes = Attribute.NOT_ENUMERABLE)
+    public Object nashornException;
+
     // initialized by nasgen
     private static PropertyMap $nasgenmap$;