[Bug objc/77404] Add Wobjc-root-class

["egall at gwmail dot gwu.edu" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77404

Eric Gallager <egall at gwmail dot gwu.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |egall at gwmail dot gwu.edu

--- Comment #1 from Eric Gallager <egall at gwmail dot gwu.edu> ---
(In reply to Tom de Vries from comment #0)
> clang supports:
> - the objc_root_class attribute, and 
> - a warning Wobjc-root-class that warns if a class both:
>   - does not have a superclass, and
>   - does not have the objc_root_class attribute
> 
> gcc:
> - does not support the -Wobjc-root-class warning, and 
> - when encountering the objc_root_class attribute, gives an unsupported
>   attribute warning.
> 
> Is the -Wobjc-root-class warning something we want to have in gcc objc as
> well?


What's the reasoning behind clang having it? Do you have any links to
documentation of the warning?