Validate parser parameter to XML_SetStartCdataSectionHandler

diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index 064a08f6699cddbf1f71d39e0e2964dc72c3620a..61598de848ae0e556c1d62da9b912689c0113bb7 100644 (file)
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -1440,7 +1440,8 @@ XML_SetCdataSectionHandler(XML_Parser parser,
 void XMLCALL
 XML_SetStartCdataSectionHandler(XML_Parser parser,
                                 XML_StartCdataSectionHandler start) {
-  startCdataSectionHandler = start;
+  if (parser != NULL)
+    startCdataSectionHandler = start;
 }
 
 void XMLCALL