Crash inside TiXmlNode::LinkEndChild()

[James Wang]

Hi Everybody,

Sometimes my program crashes when invoking TiXmlNode::LinkEndChild(), I don't know why the crash occurs, below is the detail about this kind of crash:

<<source code>>
TiXmlElement * tmpElement = new TiXmlElement("Maybe some certain identifier");
//......
//some code, for example, tmpElement.SetAttribute(ID, value);
//......
TiXmlText * cdata = new TiXmlText(sValue); //the type of sValue is 'std::string'
cdata->SetCDATA(true);
aElement->LinkEndChild(cdata);

<<crash inside TiXmlNode::LinkEndChild()>>
TiXmlNode* TiXmlNode::LinkEndChild( TiXmlNode* node )
{
    assert( node->parent == 0 || node->parent == this );
    assert( node->GetDocument() == 0 || node->GetDocument() == this->GetDocument() );

    node->parent = this;

    node->prev = lastChild;zz
    node->next = 0;

    if ( lastChild )
        lastChild->next = node;   //******the breakpoint or crash-point is at this line******//
    else
        firstChild = node;           

    lastChild = node;
    return node;
}

As implied by the source code above, the lastChild of tmpElement should be NULL/0 as my program doesn't link any node(child) before the invocation of TiXmlNode::LinkEndChild(), but the fact is that the lastChild of tmpElement has been modified somewhere and it doesn't equal to NULL/0, I have spent more than three days looking for the reason, but it's just a waste of time, so do you know something about it? or do you have encoutered the same problem? any feedbacks are appreciated, thanks in advance.

with best regards,
James

[James Wang]

Sorry, I forgot to tell you the details about my development environment.

My operating system is windows xp sp2, and my IDE is MS VS2005 professional.

[Ellers]

Hi James
I don't know if you found your problem or not, but do you have a small, all-in-one-main() compilable version that reproduces the problem?
Ellers
PS
It's probably not relevant but you use a variable called tmpElement then reference aElement?