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Date: Tue, 12 Aug 2008 21:42:07 +0200
From: Gerd Hoffmann <kraxel@redhat.com>
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Subject: Re: [Qemu-devel] [PATCH] Handle terminating signals.
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To: "M. Warner Losh" <imp@bsdimp.com>
Cc: qemu-devel@nongnu.org

M. Warner Losh wrote:
> In message: <48A1D6A3.4050406@redhat.com>
>             Gerd Hoffmann <kraxel@redhat.com> writes:
> : > No, because the program should not attempt to catch SEGV either.
> : 
> : Why not?  Can you change your attitude to say "no" without giving
> : reasons please?
> 
> The only portable thing one can do when catching SEGV is terminate the
> program.  Otherwise, when the signal handler returns, SEGV happens
> again...

Returning from the signal handler isn't going to work, sure.  The only
thing I want do is cleaning up before exiting.

Most apps never ever have to care about that.  Sometimes there are good
reasons to attempt a cleanup even for a SEGV though.  The X-Server for
example attempts to put the gfx card into a sane state then.

cheers,
  Gerd

-- 
http://kraxel.fedorapeople.org/xenner/