Hello,
I'm new to using libxml2 and I'm trying to perform the following procedure:
1. Create a new doc tree and assign a root node
2. Read an existing XML file into a tree (i.e. 'subtree')
3. Move the subtree under the root node of the tree I created
4. Save the new doc tree to an XML file
5. Free the new doc tree (crashes here)
Everything seems to work until Step 5 when I free the document and it causes my
process to crash. The generated output XML file (step 4) looks good however.
Here's a simplified sample of my code:
void RunXml(void)
{
xmlDocPtr rootDoc = NULL, subDoc = NULL;
xmlNodePtr rootNode = NULL, subRootNode = NULL;
/* Creates a new XML document, a new node, and sets it as a root node */
rootDoc = xmlNewDoc(BAD_CAST "1.0");
rootNode = xmlNewNode(NULL, BAD_CAST "rootElement");
xmlDocSetRootElement(rootDoc, rootNode);
/* Read the subtree into a new doc */
subDoc = xmlReadFile("/tmp/subtree.xml", NULL, 0);
/* Get the subtree root node */
subRootNode = xmlDocGetRootElement(subDoc);
/* Unlink the sub-root node from the sub doc */
xmlUnlinkNode(subRootNode);
/* Add the sub root node into the root tree */
xmlAddChild(rootNode, subRootNode);
/* Save the tree to a file */
xmlSaveFormatFileEnc("/tmp/outfile.xml", rootDoc, "UTF-8", 1);
/* Free the root doc */
if (rootDoc != NULL) {
xmlFreeDoc(rootDoc); /* <--- Crashes here */
}
}
I've also tried minor adjustments such as creating a new temporary node using
xmlNewChild() under the rootNode, and then calling xmlReplaceNode() to swap out
the temp node with the subRootNode without luck. Any ideas/suggestions of what
I'm doing incorrectly?
Thanks
Jordan
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