https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77404
--- Comment #3 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) > > Is the -Wobjc-root-class warning something we want to have in gcc objc as > > well? > > What's the reasoning behind clang having it? My understanding of the reasoning is: when gcc encounters a class that does not have a super class, either: a. it's a new root class, or b. the programmer forgot to specify the super class. Given that the amount of root classes in a typical objc application is small, the warning/attribute combination allows the trade off that by annotating the root classes (case a) with the attribute, which should be a minor effort, we can warn about the programmer errors (case b).
