Re: [PATCH -next 006/491] ARM/RISCPC ARCHITECTURE: Use fallthrough;

[Joe Perches]

On Thu, 2020-03-12 at 10:11 +0000, Russell King - ARM Linux admin wrote:
> On Tue, Mar 10, 2020 at 09:51:20PM -0700, Joe Perches wrote:
> > Convert the various uses of fallthrough comments to fallthrough;
> 
> And the point of what on the face of it seems to be useless churn is?
> 
> What compilers support this?

gcc 7.1, clang 9

clang does not support the /* fallthrough */ comment styles.

clang does support the __attribute__((__fallthrough__))
and the c++17 [[fallthrough]] weirdness.

see:

commit 294f69e662d1 ("compiler_attributes.h: Add 'fallthrough' pseudo
keyword for switch/case use")