On Wed, 17 Feb 2010 11:38:55 +1100, Stephen Rothwell wrote:
> Hi Jean,
>
> After merging the i2c tree, today's linux-next build (powerpc
> ppc64_defconfig) produced warnings like this:
>
> In file included from include/linux/bitops.h:17,
> from include/linux/kernel.h:15,
> from drivers/i2c/i2c-boardinfo.c:19:
> arch/powerpc/include/asm/bitops.h:226: warning: declaration of 'ffs' shadows a built-in function
>
> The x86_64 allmodconfig produces similar:
>
> In file included from include/linux/bitops.h:17,
> from include/linux/kernel.h:15,
> from next/drivers/i2c/i2c-boardinfo.c:19:
> arch/x86/include/asm/bitops.h:395: warning: declaration of 'ffs' shadows a built-in function
>
> Exposed by commit fa4f62e9f3a85490aebe8857e2208c37da851ce3 ("i2c: Build
> core and algo drivers with -Wshadow").
>
> Jean, I realise that these warnings are not something your tree has
> added, just that you have exposed them. They are a bit annoying,
> though. I am using gcc v4.4.3.
Oh well. I had the hope that at least the header files were
Wshadow-compliant so it could be enabled for selected source files. Not
getting any warning on my own system when I tried, I thought it was
fine... If it is not, then I'll just remove this patch from my tree.
Sorry for the noise and thanks for reporting.
--
Jean Delvare
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