tree ea50f73f912835632652cfdbc8b3cfe90c6b4af7
parent 3157cf4e53c03bc3da604472c015c63141907db8
author Nick Wellnhofer <wellnhofer@aevum.de> 1496351539 +0200
committer Nick Wellnhofer <wellnhofer@aevum.de> 1506009339 +0200

Fix XPath stack frame logic

Move the calls to xmlXPathSetFrame and xmlXPathPopFrame around in
xmlXPathCompOpEvalPositionalPredicate to make sure that the context
object on the stack is actually protected. Otherwise, memory corruption
can occur when calling sloppily coded XPath extension functions.

Fixes bug 783160.