Re: [PATCH] media: do not use C++ style comments in uapi headers

[Masahiro Yamada]

On Tue, Jun 4, 2019 at 8:24 PM Joe Perches <joe@xxxxxxxxxxx> wrote:
>
> On Tue, 2019-06-04 at 20:13 +0900, Masahiro Yamada wrote:
> > On the other hand, uapi headers are written in more strict C, where
> > the C++ comment style is forbidden.
>
> Is this a real problem for any toolchain?


I was waiting for this comment!

Which standard should UAPI headers follow?
Is it defined somewhere?

If there is no rule, is it up to subsystem maintainers?

We have a certain of unknowledge in user-space,
I do not know it it is a real problem.


Actually, this patch is related to this thread:
https://lkml.org/lkml/2019/5/22/1441

Thomas and you agreed
// should be avoided for SPDX tags in UAPI headers.

So, I just thought C99 was forbidden for user-space.


If C89/C90 is already fantasy,
let's clearly say "Kernel requires C99 for user-space",
and use // everywhere for SPDX tags?


-- 
Best Regards
Masahiro Yamada