Re: [xslt] Segmentation fault with an infinite loop

[Morus Walter <morus walter tanto de>]

Hi,
> 
> I certainly don't see anything wrong with your settings.  However, I
> am still convinced that my analysis is correct - the problem you
> reported occurs because of the amount of stack which your process
> has available to it.
> 
> If you want to further convince yourself, you can play around with
> xsltproc under the debugger.  A couple of important points: the
> detection and forced termination of excessive recursion is
> controlled by the global variable xsltMaxDepth (defined at
> transform.c:66, where it is preset to 5000 [number of stored
> templates]).  You can try (under the debugger) setting it to a lower
> value to see that the detection process properly occurs.  Then, the
> comparison of the current template stack level (which is kept at
> ctxt->templNr) with this constant happens at templates.c:1484.  You
> can put a break on this statement and see that all proceeds well up
> to whatever level your stack setting allows (I only know from your
> description that this number is < 5000 :-).
> 
You don't need the debugger, there's a --maxdepth option in xsltproc.

I find (debian woody, kernel 2.4.21; xsltproc 1.0.33, libxml 2.5.11) that 
the detection works up to a depth of ~4400 and fails for deeper (>4500) 
recursion.

Changing the stacksize (8192k in my case) to 10240k doesn't change this.
Changing the stacksize down to 4096k doesn't change it either.

So I don't understand what's going on there.
But I agree with William that this doesn't seem to be a libxslt issue.

Morus