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From 0815302dee2b78139832c2080348086a0564836b Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Fri, 6 Dec 2019 12:27:29 +0100
Subject: [PATCH] Fix freeing of nested documents
Apparently, some libxslt RVTs can contain nested document nodes, see
issue #132. I'm not sure how this happens exactly but it can cause a
segfault in xmlFreeNodeList after the changes in commit 0762c9b6.
Make sure not to touch the (nonexistent) `content` member of xmlDocs.
---
tree.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/tree.c b/tree.c
index 070670f..0d7fc98 100644
--- a/tree.c
+++ b/tree.c
@@ -3708,6 +3708,11 @@ xmlFreeNodeList(xmlNodePtr cur) {
(cur->type != XML_XINCLUDE_START) &&
(cur->type != XML_XINCLUDE_END) &&
(cur->type != XML_ENTITY_REF_NODE) &&
+ (cur->type != XML_DOCUMENT_NODE) &&
+#ifdef LIBXML_DOCB_ENABLED
+ (cur->type != XML_DOCB_DOCUMENT_NODE) &&
+#endif
+ (cur->type != XML_HTML_DOCUMENT_NODE) &&
(cur->content != (xmlChar *) &(cur->properties))) {
DICT_FREE(cur->content)
}
--
1.8.3.1
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