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Date:      Wed, 3 Nov 2004 08:42:16 -0800
From:      Kris Kennaway <kris@obsecurity.org>
To:        Kirk Strauser <kirk@strauser.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: HEADS UP: Ports are not ready for CFLAGS=-O2 in 6.0
Message-ID:  <20041103164216.GA56484@xor.obsecurity.org>
In-Reply-To: <200411031036.17792.kirk@strauser.com>
References:  <20041102222000.GA65845@xor.obsecurity.org> <200411021736.21034.kirk@strauser.com> <20041102234821.GA76782@xor.obsecurity.org> <200411031036.17792.kirk@strauser.com>

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On Wed, Nov 03, 2004 at 10:36:14AM -0600, Kirk Strauser wrote:
> On Tuesday 02 November 2004 17:48, Kris Kennaway wrote:
>=20
> > Don't know, perhaps they don't care about the fraction of ports that
> > don't work properly since the rest of them have such eleet
> > optimization.
>=20
> On the technical end of things, what exactly is it that causes problems w=
ith=20
> higher-level optimizations?  Are they due to bugs in GCC, or obfuscated=
=20
> code that can be interpreted several ways?

Sometimes GCC bugs, but also incorrect C code in a lot of cases
(that's how I came up with the number of 350 ports; those are the
ports that emit a certain warning about probable bugs when compiled
with -O2).

Kris

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