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Date:      Mon, 11 Dec 2000 00:11:18 +1100 (EST)
From:      Bruce Evans <bde@zeta.org.au>
To:        John Baldwin <jhb@FreeBSD.ORG>
Cc:        atrens@nortel.ca, current@FreeBSD.ORG
Subject:   RE: possibly related data point - (was) Re: Current Broken!
Message-ID:  <Pine.BSF.4.21.0012110003140.714-100000@besplex.bde.org>
In-Reply-To: <XFMail.001208092345.jhb@FreeBSD.org>

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On Fri, 8 Dec 2000, John Baldwin wrote:

> On 08-Dec-00 atrens@nortel.ca wrote:
> > 
> > John,
> > 
> > I'm not a constraints expert either, but I noticed that when I try to
> > build a kernel WITHOUT any optimization, I get a failure in
> > 
> > /usr/src/sys/i386/atomic.h .
> 
> Compiling a kernel with anything but -O for optimization is not supported.  gcc
> has produced buggy code for the -O0 case in the past.

-O0 (or plain cc without -O) is supposed to work, but no one cares enough
about it to fix it every day.  Fixing <machine/atomic.h> has been pending
for many days now.  My oldest saved mail about it is dated 21 July 2000,
but ISTR discussing it last year.

Bruce



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