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

Simon Marlow marlowsd at gmail.com
Tue Jul 13 07:23:14 EDT 2010


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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