[xml] Crash using xmlFreeNode

["Theodore H. Smith" <delete elfdata com>]

I'm getting a crash using xmlFreeNode.

The stack frame reads:

#0      0x92c29a58 in xmlFreeNodeList
#1      0x92c29cd8 in xmlFreeNode
#2      0x0009112c in ReplaceDependancies at SCORMDisag.cpp:168

ReplaceDependancies is my own function.

The function is this:


void ReplaceDependancies( xmlNode* WholeRoot, xmlNode* NewResource,  
XML_Map& xMap ) {
        xmlNode* next = My_XMLGetElement(NewResource, "dependency");

        while (next) {
                xmlNode* dep = next;
                next = My_XMLNextElement( dep, "dependency" );
                
                ReplaceDepSub( WholeRoot, NewResource, dep, xMap );

                xmlUnlinkNode( dep );
                xmlFreeNode( dep );
        };
}

If I comment out xmlFreeNode, then the code *appears* to work  
perfectly. (Although it might still be doing something wrong.)

Am I doing something wrong? The NewResource xmlNode* parameter, was  
created via xmlCopyNode. The document copied from has an XML name  
space, and so NewResource has an "xmlns" attribute.

Actually a separate issue is that I wish NewResource *didn't* have an  
xmlns resource. This is because the document I am putting it back  
into, (via xmlAddChild), has a name space already! And so the xmlns  
thingy gets duplicated. It's quite annoying to look at duplicate  
xmlns attributes. They weren't there in the original XML so they  
shouldn't be there in the copied XML, and they arent' needed even to  
maintain the XML's meaning, because I'm putting it back into a  
document with the same name space.

I'd like some way to disable this automatic xmlns addition, please.

Also, this list is quite quiet. Not much activity. Is it because of  
the holiday or has the list quietned down over time? Really I just  
worry about getting an answer to my questions!

Thanks in advance to anyone who is able to advise!