#9054: fix crash when using pyexpat with a system expat lib version 2.0.1.

Misc/NEWS

@@ -66,6 +66,9 @@ Library
 Extensions
 ----------
 
+- Issue #9054: Fix a crash occurring when using the pyexpat module
+  with expat version 2.0.1.
+
 - Issue #5355: Provide mappings from Expat error numbers to string
   descriptions and backwards, in order to actually make it possible
   to analyze error codes provided by ExpatError.

Modules/pyexpat.c

@@ -351,6 +351,9 @@ call_character_handler(xmlparseobject *self, const XML_Char *buffer, int len)
     PyObject *args;
     PyObject *temp;
 
+    if (!have_handler(self, CharacterData))
+        return -1;
+
     args = PyTuple_New(1);
     if (args == NULL)
         return -1;