[Bug objc/69844] [6 Regression] Possibly bogus error: unknown type name in ObjC code

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69844

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I think a safe fix would be to just add if (!c_dialect_objc ()) to the change
that caused this.