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

["vries at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

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

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Eric Gallager from comment #1)
> (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?

I can find just the commit:
https://github.com/llvm-mirror/clang/commit/b2f6820773aabff3c5c9e0dbb1cbbbda0d80c41f
.