--- embedaddon/libxml2/include/libxml/xpath.h	2012/02/21 23:37:58	1.1.1.1
+++ embedaddon/libxml2/include/libxml/xpath.h	2013/07/22 01:22:22	1.1.1.2
@@ -68,7 +68,8 @@ typedef enum {
     XPATH_UNDEF_PREFIX_ERROR,
     XPATH_ENCODING_ERROR,
     XPATH_INVALID_CHAR_ERROR,
-    XPATH_INVALID_CTXT
+    XPATH_INVALID_CTXT,
+    XPATH_STACK_ERROR
 } xmlXPathError;
 
 /*
@@ -380,6 +381,8 @@ struct _xmlXPathParserContext {
     xmlXPathCompExprPtr comp;		/* the precompiled expression */
     int xptr;				/* it this an XPointer expression */
     xmlNodePtr         ancestor;	/* used for walking preceding axis */
+
+    int              valueFrame;        /* used to limit Pop on the stack */
 };
 
 /************************************************************************