On Sun, 2009-05-31 at 09:15 -0700, Sander Temme wrote:
> Looks like descs has not been filled in:
> 
> (gdb) p descs
> $8 = (const apr_pollfd_t *) 0x0
> 
> Should that be NULL after the poll?

Maybe you need to step into apr_pollset_poll() on line 384, to see what
happens to descs there. Looks like success is being returned, but descs
is still NULL, where it should not be:
---------------------
        if (descriptors) {
            *descriptors = pollset->result_set;
        }
---------------------

We know that descriptors is not NULL there, because it is &descs. So, I
guess pollset->result_set must be NULL then, which it cannot be because
it was supposed to be initialised in apr_pollset_create().

Maybe something is stomping over the apr_pollset_t structure and making
result_set NULL. Really weird...

-- 
Bojan