Date: Mon, 29 Jul 2002 14:47:09 +1000 From: Gregory Bond <gnb@itga.com.au> To: Clifton Royston <cliftonr@lava.net> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: Is use of -O2 still deprecated for buildworld in -stable? Message-ID: <200207290447.OAA22147@lightning.itga.com.au> In-Reply-To: Your message of Sat, 27 Jul 2002 19:19:45 -1000.
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> My understanding is that whether or not -O2 *should* produce exactly > equivalent code to -O, there are recurrent reports of people having > trouble doing a buildworld with -O2 in -stable or in 4.x release > trains, where their problems go away when they revert back to -O. The TCP checksum code seems to be the most common culprit - compiling with -O2 seems to create checksum routines that fail in certain corner cases, meaning some hosts or some data patterns cause TCP sessions to freeze. [I've not seen it myself, but it has been reported here a couple of times.] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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