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Date:      Tue, 22 Apr 1997 21:32:05 +0400 (MSD)
From:      =?KOI8-R?B?4c7E0sXKIP7F0s7P1w==?= <ache@nagual.ru>
To:        Bruce Evans <bde@zeta.org.au>
Cc:        current@FreeBSD.ORG, dyson@FreeBSD.ORG
Subject:   Re: Recent vfork kernel changes broke csh & tcsh!
Message-ID:  <Pine.BSF.3.96.970422212716.363E-100000@nagual.ru>
In-Reply-To: <199704221236.WAA18843@godzilla.zeta.org.au>

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On Tue, 22 Apr 1997, Bruce Evans wrote:

> It may be a csh bug.  csh does a lot of work to preserve the parent
> state.  It's not clear that this can work with an optimising compiler.
> However, compiling without -O and declaring all local variables as
> volatile didn't help.

Yes, it may be csh & tcsh common bug, but I can't find what clobbers
exactly. It finally hits process list in both csh & tcsh, but preserving
process list not helps.

> I think I found other bugs while attempting to debug this:

Do you have some results from debugging?

BTW, this bug easily cause another bug I report early (ufs lockstatus
panic) when csh or tcsh is login shell. When you call a.sh from login
shell, sometimes it cause lockstatus panic instead of exiting to getty.

-- 
Andrey A. Chernov
<ache@null.net>
http://www.nagual.ru/~ache/




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