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1925855c0f
Upon freeing libxslt's context, every document which is not the *main* document will be freed by libxslt. If a node of a document which is not the main document gets returned to userland, we'd free the node twice: - first by the cleanup of the xslt context - and then by our own refcounting mechanism. This was reported in bug 49634, and was fixed by always copying the node (and later re-fixed in bug 70078). The original fix is not entirely correct unfortunately because of the following two main reasons: - modifications to the node will only modify the copy, and not the original - accesses to the parent, path, ... will not work This patch fixes it properly by only copying the node if it origins from a document other than the main document. Co-authored-by: juha.ikavalko@agentit.fi Closes GH-10318.