Not sure why the regression test missed this, but the PyXML tests caught it.

We should get attributes from the right object.

Lib/xml/sax/expatreader.py

@@ -49,7 +49,7 @@ class ExpatLocator(xmlreader.Locator):
         parser = self._ref()
         if parser is None or parser._parser is None:
             return 1
-        return self._parser.ErrorLineNumber
+        return parser._parser.ErrorLineNumber
 
     def getPublicId(self):
         parser = self._ref()