https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93740
--- Comment #4 from m.cencora at gmail dot com --- I have done some more experiments, and it seems the problem applies to all pointer-to-member (not just pointer to member function, but also for pointer to data member). Also it doesn't matter if these pointer-to-members are all from same class or not, error is the same.
