[Python-Dev] (s)re crashing in regrtest (was SRE 0.9.8 benchmarks)

[Fredrik Lundh]

mark favas wrote:
> >> >>> p.match(500000*'x')
> >> Segmentation fault (core dumped)
> >
> >Andrew, would you mind adding a test case for that to the re test
> >suite?  It's important that this doesn't come back!
>=20
> In fact, on my machine with the default stacksize of 2048kb, =
test_re.py
> already exercises this bug. (Goes away if I do an "unlimit", of =
course.)
> So testing for this deterministically is always going to be dependent =
on
> the platform. How large do you want to go (reasonably)? - although I
> guess core dumps should be avoided...

afaik, there was no test in the standard test suite that
included run-away recursion...

what test is causing this error?

(adding a print statement to sre._compile should help you
figure that out...)

</F>