Date: Sat, 5 Jul 2014 14:10:46 +0100 From: David Chisnall <theraven@FreeBSD.org> To: Dimitry Andric <dim@FreeBSD.org> Cc: Hans Petter Selasky <hps@selasky.org>, stable@freebsd.org, "current@freebsd.org" <current@freebsd.org> Subject: Re: [HEADS-UP] Problem with clang in 9-stable [was: r268244 (stable/9) seems to break "sysctl hw.ncpu"] Message-ID: <771D269B-AC6D-4686-ABB0-04F7DCD3A8D9@FreeBSD.org> In-Reply-To: <F7112AF8-82DD-410D-97A1-C01FFB49B3B4@FreeBSD.org> References: <20140704123901.GR6056@albert.catwhisker.org> <53B6E218.5070009@selasky.org> <20140704174705.GS6056@albert.catwhisker.org> <53B6EDD1.8030506@selasky.org> <20140704181831.GV6056@albert.catwhisker.org> <909248A4-1B7C-4836-ADAA-F81A70A8AC3C@theravensnest.org> <F7112AF8-82DD-410D-97A1-C01FFB49B3B4@FreeBSD.org>
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On 5 Jul 2014, at 14:07, Dimitry Andric <dim@FreeBSD.org> wrote:
> Interestingly, -Wno-uninitialized has been in bsd.sys.mk since r76861,
> and the accompanying comment ("XXX Delete -Wuninitialized by default =
for
> now -- the compiler doesn't always get it right") has never been
> changed. :-)
>=20
> It is probably time to re-enable that warning after 13 years, at =
least.
It probably only wants enabling for clang. GCC (at least, GCC 4.2.1) =
performs this analysis based on analyses run by the optimisers and so =
the warnings are dependent on optimisation level.
David
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