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Date:      Sat, 02 Oct 1999 19:10:03 +0900
From:      "Daniel C. Sobral" <dcs@newsguy.com>
To:        obrien@freebsd.org
Cc:        John Polstra <jdp@polstra.com>, Alan Cox <alc@cs.rice.edu>, arch@freebsd.org
Subject:   Re: Now that sigcontext is gone ...
Message-ID:  <37F5D9FB.D121CF79@newsguy.com>
References:  <19990930162834.C20978@nonpc.cs.rice.edu> <XFMail.990930144341.jdp@polstra.com> <19991002011955.A85828@dragon.nuxi.com>

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[redirecting to -arch as a test-case]

David O'Brien wrote:
> 
> > > P.S.  This also reminds me that FreeBSD is non-standard relative
> > > to Linux and all of the major vender commercial Unices in that a disallowed
> > > access, such as a write to a read-only region of memory, generates
> > > a SIGBUS rather than a SIGSEGV.
> >
> > Yes, this even violates the 1996 POSIX spec.
> 
> So lets make the change for 4.0. :-)
> 
> Just how much code will break?

Well, it won't break any POSIX code, that's sure... :-)

I like having the distinction this provides, but since this is
stricly freebsd-i386, I'd wager we won't have too much trouble
making the change. After all, if freebsd-alpha works ok in a
POSIX-compatible way...

--
Daniel C. Sobral			(8-DCS)
dcs@newsguy.com
dcs@freebsd.org

	Rule 69: Do unto other's code as you'd have it done unto yours





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