linux-kernel - Re: [PATCH] regmap: silence GCC warning

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Date:	Mon, 01 Oct 2012 12:32:57 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] regmap: silence GCC warning

On Mon, 2012-10-01 at 11:19 +0100, Mark Brown wrote:
> I haven't actually stared hard enough at the code to figure this out
> yet but given what you're changing I'd hope it's a flow analysis bug.
> I'm certainly not seeing a warning here.

Well, you may be using another version of gcc, or using different
defaults. I'm using gcc-4.7.2-2.fc17.x86_64 (ie, the gcc currently
shipped in Fedora 17 for x86_64), in what I think to be default
settings.

Note that it's not some local oddity. Looking at the (currently) latest
log for a Fedora build of v3.6-rc7 you'll find an identical warning [0].
Apparently that build was done with gcc-4.7.1-5.fc18.x86_64 [1].


Paul Bolle

[0] http://kojipkgs.fedoraproject.org/packages/kernel/3.6.0/0.rc7.git2.2.fc18/data/logs/x86_64/build.log
[1] http://kojipkgs.fedoraproject.org/packages/kernel/3.6.0/0.rc7.git2.2.fc18/data/logs/x86_64/root.log

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