[xml] Re: Access Violation

[Vincent Finn <vincent finn automsoft com>]

Daniel Veillard wrote:
> On Mon, Jul 28, 2003 at 03:15:09PM +0100, Vincent Finn wrote:
>
> > I am using it as follows
> > void fn(xmlNodePtr pOperationElement)
> > {
> >         xmlNodePtr pEvent = pOperationElement->children;
> >         while (pEvent != NULL)
> >         {
> >                 xmlNodePtr pValueText = pValue->children;
> >                 const char* bstrValueText = reinterpret_cast<char
> > const*>(pValueText->content);
> >                 // etc...
> >                 pEvent = pEvent->next;
> >         }
> > }
> >
> > I assume since it looks like heap corruption that I am misusing the library
> > in some way
> > Is there anything here that looks wrong to anyone?
>
>
>   accessing ->content without checking the type of the node first
> is 100% wrong. You're making assumption which is very likely to be false.

In my case it won't ever be false.
Unless I have misunderstood content is for getting the text from a text 
node, in which case I would have thought what I am doing is fine

I know with 100% certainty that the node I am accessing is of the form
<E><V>48471740</V><T>01c354fc14bb8030</T></E>
so I use content to access the text values

As far as I could tell it seemed the same as using 
xmlNodeListGetString() but without the need to free the xmlChar which 
seemed to be a better solution for me since I am purely reading and want 
to avoid any data copying I can

Is using content inherently unsafe?

        Vin