Date: Mon, 29 Jul 2002 12:20:14 +0400 (MSD) From: Dmitry Morozovsky <marck@rinet.ru> To: Gregory Bond <gnb@itga.com.au> Cc: Clifton Royston <cliftonr@lava.net>, <freebsd-stable@FreeBSD.ORG> Subject: Re: Is use of -O2 still deprecated for buildworld in -stable? Message-ID: <20020729121517.A35799-100000@woozle.rinet.ru> In-Reply-To: <200207290447.OAA22147@lightning.itga.com.au>
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On Mon, 29 Jul 2002, Gregory Bond wrote: GB> > My understanding is that whether or not -O2 *should* produce exactly GB> > equivalent code to -O, there are recurrent reports of people having GB> > trouble doing a buildworld with -O2 in -stable or in 4.x release GB> > trains, where their problems go away when they revert back to -O. GB> GB> The TCP checksum code seems to be the most common culprit - compiling with -O2 GB> seems to create checksum routines that fail in certain corner cases, meaning GB> some hosts or some data patterns cause TCP sessions to freeze. GB> GB> [I've not seen it myself, but it has been reported here a couple of times.] It possibly has been fixed recently: http://docs.freebsd.org/cgi/getmsg.cgi?fetch=727930+0+archive/2002/cvs-all/20020707.cvs-all Sincerely, D.Marck [DM5020, DM268-RIPE, DM3-RIPN] ------------------------------------------------------------------------ *** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck@rinet.ru *** ------------------------------------------------------------------------ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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