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Date:      Mon, 1 Jul 2002 16:05:06 -0400 (EDT)
From:      Daniel Eischen <eischen@pcnet1.pcnet.com>
To:        Julian Elischer <julian@elischer.org>
Cc:        "Andrey A. Chernov" <ache@nagual.pp.ru>, NAKAJI Hiroyuki <nakaji@boggy.acest.tutrp.tut.ac.jp>, freebsd-current@FreeBSD.ORG
Subject:   Re: Post-KSE disaster with libc_r
Message-ID:  <Pine.GSO.4.10.10207011556130.26890-100000@pcnet1.pcnet.com>
In-Reply-To: <Pine.BSF.4.21.0207011215390.91887-100000@InterJet.elischer.org>

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On Mon, 1 Jul 2002, Julian Elischer wrote:
> 
> On Mon, 1 Jul 2002, Andrey A. Chernov wrote:
> 
> > On Mon, Jul 01, 2002 at 10:26:22 -0700, Julian Elischer wrote:
> > > the question is:
> > > did you update both kernel and userland?
> > 
> > This bug is not related to in-kernel KSE code (but, maybe related to
> > header files compiled in). I got it even with updated userland and old
> > pre-KSE kernel (with both updated I have it too). Only switching to libc_r 
> > old about month ago helps.
> 
> Ok this is good news becasue it helps narrow the problem.
> If an old libc_r runs well it at least suggests that the kernel is
> working as it should. That is a great relief to me!
> 
> My current guess is that something in an include file is poisonning the
> compile of a new libc_r.
> 
> I think we may need Dan to help us find it..

I'm a few days away from being able to upgrade to the latest
-current.

I'd suspect that it is something to do with the layout of
the fpregs, mcontext or something like that.  Libc_r mucks
about in jmp_buf (userland) and ucontext/mcontext, so anything
that changed those would cause problems.

You can enable error checking when compiling libc_r and see
if anything comes up too.  It should be relatively error free
(other than a few _<function-names> not being defined).

-- 
Dan Eischen


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