Re: AW: AW: [xml] xmlTextWriter

[Daniel Veillard <veillard redhat com>]

On Wed, Oct 08, 2003 at 10:38:42AM +0200, Mickautsch, Alfred wrote:
> > Was interesting to see you did printf like functions btw. :) 
> > are those safe 
> > for overflows and such ?
>
> They use vsnprintf internally, so they are safe for buffer overflows. I did a little searching and found 
> out that vsnprintf isn't very portable (different implementations return different values for the same 
> errors). So I will have to fix that.
> Output truncating if the buffer is too small is still a problem, so I will have to call vsnprintf in a loop 
> until it returns a value less than the size of the buffer.
> And if vsnprintf returns a negative value, errno should be checked, of course... you never know what errors 
> you can get :-(
>
> > does any other part oflixml use printf like functions anyways ?
>
> I saw an xmlStrPrintf mentioned on the list not so long ago (obviously) :)

  We use the TRIO set of *printf reimplementation for platforms where
they are not available. So there should be no portability issues, it's
already dealt with. I'm not sure what your problems are in practice.

Daniel

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