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Fix freeing of nested documents

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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.
This commit is contained in:
Nick Wellnhofer 2019-12-06 12:27:29 +01:00
parent 2c80fc9116
commit 0815302dee
1 changed files with 5 additions and 0 deletions
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tree.c
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@ -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)
}