On Tue, Jul 30, 2019 at 10:35:18PM -0700, Joe Perches wrote:
> Reserve the pseudo keyword 'fallthrough' for the ability to convert the
> various case block /* fallthrough */ style comments to appear to be an
> actual reserved word with the same gcc case block missing fallthrough
> warning capability.
>
> All switch/case blocks now must end in one of:
>
> break;
> fallthrough;
> goto <label>;
> return [expression];
>
> fallthough is gcc's __attribute__((__fallthrough__)) which was introduced
> in gcc version 7..
>
> fallthrough devolves to an empty "do {} while (0)" if the compiler version
> (any version less than gcc 7) does not support the attribute.
>
> Signed-off-by: Joe Perches <[email protected]>
_MUCH_ better than that silly comment, thanks for doing this!
Acked-by: Peter Zijlstra (Intel) <[email protected]>
