(Periodic) Segmentation faults when using regex-compat-0.92

[Kathleen Fisher]

I am able to repeat the bug using regex 0.93.1 and ghci (version 6.13.20100309).  I've filed a trac report.  In the meantime, any suggestions on what I might do to work around the problem?    Is there a way to upgrade to the most recent HEAD version without going through a complete reinstallation (which takes hours)?

Kathleen



On Jul 13, 2010, at 4:23 AM, Simon Marlow wrote:

> I tried this here with regex 0.93.1 and GHC build yesterday, and couldn't reproduce it on either 32 or 64-bit x86.
> 
> Cheers,
> 	Simon
> 
> On 13/07/2010 08:13, Simon Peyton-Jones wrote:
>> Don's right.  If it's reproducible please file a Trac ticket.
>> 
>> Simon
>> 
>> | -----Original Message-----
>> | From: libraries-bounces at haskell.org [mailto:libraries-bounces at haskell.org] On
>> | Behalf Of Don Stewart
>> | Sent: 13 July 2010 00:36
>> | To: Kathleen Fisher
>> | Cc: TextRegexLazy at personal.mightyreason.com; libraries at haskell.org
>> | Subject: Re: (Periodic) Segmentation faults when using regex-compat-0.92
>> |
>> | kathleen.fisher:
>> |>  I am getting periodic (although frequent) segmentation faults when loading
>> | the following code into ghci (version 6.13.20100309) and then asking for the
>> | value of re_results1:
>> |>
>> |>  >  module Examples.RegExpTest where
>> |>  >
>> |>  >  import qualified Text.Regex as RE
>> |>  >
>> |>  >  re = RE.mkRegexWithOpts "^a+" True True
>> |>  >  re_results1 = RE.matchRegexAll re "aaaab"
>> |>
>> |>  Is this a known problem?  Are there known work arounds?
>> |
>> | That sounds very scary. There should never be a segfault in code like
>> | this. It may point to a compiler bug in the GHC head.
>> |
>> | I wonder if you can upgrade to regex-compat 0.93.1 ?
>> |
>> |     http://hackage.haskell.org/package/regex-compat
>> |
>> | Forwarding to the maintainer, Chris Kuklewicz.
>> |
>> | -- Don
>> |
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