Re: [PATCH 2/5] kbuild: LLVMLinux: Adapt warnings for compilation with clang

[Behan Webster <behanw@converseincode.com>]

On 02/25/14 17:17, Dave Jones wrote:
> On Tue, Feb 25, 2014 at 05:08:40PM -0800, behanw@converseincode.com wrote:
>   
>   > When compiling kernel with clang, disable warnings which are too noisy, and
>   > add the clang flag catch-undefined-behavior.
>   >
>   > +# Clang
>   > +warning-1 += $(call cc-disable-warning, initializer-overrides)
>   > +warning-1 += $(call cc-disable-warning, unused-value)
>   > +warning-1 += $(call cc-disable-warning, format)
>   > +warning-1 += $(call cc-disable-warning, unknown-warning-option)
>   > +warning-1 += $(call cc-disable-warning, self-assign)
>   > +warning-1 += $(call cc-disable-warning, sign-compare)
>   > +warning-1 += $(call cc-disable-warning, format-zero-length)
>   > +warning-1 += $(call cc-disable-warning, uninitialized)
>   > +warning-1 += $(call cc-option, -fcatch-undefined-behavior)
>
> Do you have a pointer to an example log-file from before this change ?
> I'm curious for eg, which self-assign warnings are showing up,
> because I've been fixing up the ones that Coverity found, of which
> there are only a dozen or so left iirc.
I count 22 in this particular x86 kernel build (some of which you may 
well have fixed already). Enjoy.

http://buildbot.llvm.linuxfoundation.org/self-assign-build.log.txt

Perhaps I should re-enable that warning, considering the number has 
dropped so dramatically from when I last checked over a year ago.

Thanks,

Behan

-- 
Behan Webster
behanw@converseincode.com