Re: [Boost-users] follow up on regex questions

From: Mike Marchywka (marchywka_at_[hidden])
Date: 2007-10-04 15:52:18

>What is the text you are matching against?  If you can give me a concrete
>example I can test it here, but "it hangs" isn't very useful I'm afraid ;-)
>

Unless it is easy, please hold off on that last example. I think greta may 
be failing
too but with a less overt failure mode. It isn't hanging or aborting but
the piece of code exploding with boost may be dropping some data with
greta. Given all the suspects, let me make sure greta code works perfectly.

Thanks again.

>From: "John Maddock" <john_at_[hidden]>
>Reply-To: boost-users_at_[hidden]
>To: <boost-users_at_[hidden]>
>Subject: Re: [Boost-users] follow up on regex questions
>Date: Thu, 4 Oct 2007 17:37:22 +0100
>
>Mike Marchywka wrote:
> > Hi,
> > Thanks for your help in the past. I would  normally drop the issue at
> > this point
> > until I get my build environment cleaned up
> > (" My build is messed up, I haven't read the documentation. What is
> > wrong with YOUR library?" LOL).
> > but I do have one more question which I believe is related to boost
> > regex processing.
> > If someone has a known good regex test program or can point to an
> > obvious problem
> > it may be helpful.
>
>You mean libs/regex/test/regress/*.cpp ?
>
>It would be a good idea to build and run this to verify the sanity of your
>setup at least: I still have a suspision that the binaries you are using 
>are
>not compatible with your build options or regex headers, but I can't be
>sure.
>
> > Again, this code seems to work with Microsoft's
> > greta and boost gives identical results on a longer list of SIMPLER
> > regexes so I reasonably believe that the problem is due to handling
> > of more complicated expression ( One caveat, to be complete, is that
> > greta did seem to return some spurious
> > results but they are easily filter programmatically, things like
> > negative location,
> > but the plausible ones that I have checked manually are right).
> > However, on this sequence of regexes (regexi?) I get either an abort
> > OR the program hangs
> > later on non-sensical execution (I know, "Gee, you have a build
> > problem and the stack is messed up?").
> >
> > myboost.cpp114 (GU.*?TACTAAC.{20,40}AG|^)(.*?)(GU.*?TACTAAC.{20,40}AG)
> > myboost.cpp114 ATG(...)*?(TAG|TAA|TGA)
> > myboost.cpp114 TATAA.*?ATAAA
> > myboost.cpp114 (GU.*?TACTAAC.{20,40}AG|^)(.*?)(GU.*?TACTAAC.{20,40}AG)
> > myboost.cpp114 ATG(...)*?(TAG|TAA|TGA)
> >
> > ( progam hangs in my code or had been core dumping in boost::regex )
>
>What is the text you are matching against?  If you can give me a concrete
>example I can test it here, but "it hangs" isn't very useful I'm afraid ;-)
>
>John.
>
>_______________________________________________
>Boost-users mailing list
>Boost-users_at_[hidden]
>http://lists.boost.org/mailman/listinfo.cgi/boost-users

_________________________________________________________________
Spiderman 3 Spin to Win! Your chance to win $50,000 & many other great 
prizes! Play now! http://spiderman3.msn.com