diff -aur Python-2.6.9/Modules/pyexpat.c Python-2.6.9.new/Modules/pyexpat.c
--- Python-2.6.9/Modules/pyexpat.c	2014-04-25 21:34:10.703530459 +0200
+++ Python-2.6.9.new/Modules/pyexpat.c	2014-04-25 21:34:27.836864643 +0200
@@ -456,6 +456,9 @@
     PyObject *args;
     PyObject *temp;
 
+    if (!have_handler(self, CharacterData))
+        return -1;
+
     args = PyTuple_New(1);
     if (args == NULL)
         return -1;