[Bug objc/80912] enhancement: -Wundeclared-selector improvements

[egall at gwmail dot gwu.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80912

--- Comment #1 from Eric Gallager <egall at gwmail dot gwu.edu> ---
Created attachment 41437
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41437&action=edit
compressed preprocessed source

Oops, the preprocessed source was too big to attach by itself, so I had to
compress it.