[Intel-wired-lan] [PATCH 000/141] Fix fall-through warnings for Clang
Finn Thain
fthain at telegraphics.com.au
Tue Nov 24 23:53:13 UTC 2020
On Wed, 25 Nov 2020, Miguel Ojeda wrote:
>
> The C standard has nothing to do with this. We use compiler extensions
> of several kinds, for many years. Even discounting those extensions, the
> kernel is not even conforming to C due to e.g. strict aliasing. I am not
> sure what you are trying to argue here.
>
I'm saying that supporting the official language spec makes more sense
than attempting to support a multitude of divergent interpretations of the
spec (i.e. gcc, clang, coverity etc.)
I'm also saying that the reason why we use -std=gnu89 is that existing
code was written in that language, not in ad hoc languages comprised of
collections of extensions that change with every release.
> But, since you insist: yes, the `fallthrough` attribute is in the
> current C2x draft.
>
Thank you for checking. I found a free version that's only 6 weeks old:
http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2583.pdf
It will be interesting to see whether 6.7.11.5 changes once the various
implementations reach agreement.
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