https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77298
--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> --- You can always use -fkeep-inline-functions to get the warning even for unused inlines (by forcing them to be emitted). -Wnonnull-compare isn't the only warning that isn't performed in the FEs early, think about -Wuninitialized and -Wmaybe-uninitialized and many others. Those have the same behavior here.
