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

[Mark Favas]

[Guido]
>> Hmm... here's an old problem that's returned (recursion on repeated
>> group matches, I expect):
>> 
>> >>> p=re.compile('(x)*')
>> >>> p
>> <SRE_Pattern object at 0x8127048>
>> >>> p.match(500000*'x')
>> Segmentation fault (core dumped)
>
>Ouch.
>
>Andrew, would you mind adding a test case for that to the re test
>suite?  It's important that this doesn't come back!

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...

Mark

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