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End function node ancestor search at document

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Avoids dereferencing a non-existent ->ns property on an
XML_DOCUMENT_NODE pointer.

Fixes #151.
This commit is contained in:
Dominik Röttsches
2025-08-27 14:28:40 +03:00
parent 841a1805a9
commit fe508f201e
1 changed files with 7 additions and 2 deletions
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9
libexslt/functions.c
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@@ -617,8 +617,13 @@ exsltFuncResultComp (xsltStylesheetPtr style, xmlNodePtr inst,
* instanciation of a func:result element.
*/
for (test = inst->parent; test != NULL; test = test->parent) {
if (IS_XSLT_ELEM(test) &&
IS_XSLT_NAME(test, "stylesheet")) {
if (/* Traversal has reached the top-level document without
* finding a func:function ancestor. */
(test != NULL && test->type == XML_DOCUMENT_NODE) ||
/* Traversal reached a stylesheet-namespace node,
* and has left the function namespace. */
(IS_XSLT_ELEM(test) &&
IS_XSLT_NAME(test, "stylesheet"))) {
xsltGenericError(xsltGenericErrorContext,
"func:result element not a descendant "
"of a func:function\n");