garbage input crashes zsh

garbage input crashes zsh

[Danek Duvall]

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This is with 4.2.5 on both Solaris and Linux (and I've reproduced with
4.3.2 on Linux).  Someone at Sun filed this bug; I don't know how much
y'all care.

    zsh -f < test_8

where test_8 is the attached file.  I've got a couple more such files, all
of which leave a core file with the same stack trace, FWIW.

Danek

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Re: garbage input crashes zsh

[Peter Stephenson]

Danek Duvall wrote:
> This is with 4.2.5 on both Solaris and Linux (and I've reproduced with
> 4.3.2 on Linux).  Someone at Sun filed this bug; I don't know how much
> y'all care.

Thanks, this is always useful to know.

>     zsh -f < test_8
> 
> where test_8 is the attached file.  I've got a couple more such files, all
> of which leave a core file with the same stack trace, FWIW.

It seems to be OK with the latest version (lots of errors, of course,
but no damage), but I can get the crash with the tip of the 4.2 branch.
It seems to be doing something wayward in (what looks to it like) a
complicated pattern match.  If I get a chance I'll try to work out what
fixed it, but it could be complicated since the pattern code has changed
quite a lot owing to adding multibyte support.  It's quite possibly a
simple error to do with metafication; a number of those turned up along
the way.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070


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Re: garbage input crashes zsh

[Danek Duvall]

Peter Stephenson wrote:

> It seems to be OK with the latest version (lots of errors, of course,
> but no damage), but I can get the crash with the tip of the 4.2 branch.
> It seems to be doing something wayward in (what looks to it like) a
> complicated pattern match.  If I get a chance I'll try to work out what
> fixed it, but it could be complicated since the pattern code has changed
> quite a lot owing to adding multibyte support.  It's quite possibly a
> simple error to do with metafication; a number of those turned up along
> the way.

Okay.  If it's fixed in the tip of 4.3, that's probably good enough (I
didn't realize 4.3.2 was that out of date), so if you can't track it down
easily, don't lose any sleep over it.

Most of the non-Sun software in Solaris gets bugfixed by upgrade, and
that's probably sufficient for this case (though I'm still hesitant to
upgrade to 4.3 given all the multibyte change that -- IIRC -- isn't
complete yet, even if any portion of the shell which was converted is
done).

Thanks,
Danek

Re: garbage input crashes zsh

[Peter Stephenson]

Danek Duvall wrote:
> Most of the non-Sun software in Solaris gets bugfixed by upgrade, and
> that's probably sufficient for this case (though I'm still hesitant to
> upgrade to 4.3 given all the multibyte change that -- IIRC -- isn't
> complete yet, even if any portion of the shell which was converted is
> done).

I'm hoping 4.3.3 will be fairly feature-complete, which is why I'm
waiting.  There doesn't seem to be a good reason for a real release
while the fiddly little changes ramble on.

-- 
Peter Stephenson <pws@csr.com>                  Software Engineer
CSR PLC, Churchill House, Cambridge Business Park, Cowley Road
Cambridge, CB4 0WZ, UK                          Tel: +44 (0)1223 692070


To access the latest news from CSR copy this link into a web browser:  http://www.csr.com/email_sig.php

Re: garbage input crashes zsh

[Danek Duvall]

Peter Stephenson wrote:

> I'm hoping 4.3.3 will be fairly feature-complete, which is why I'm
> waiting.  There doesn't seem to be a good reason for a real release
> while the fiddly little changes ramble on.

Okay, cool.

Thanks,
Danek