https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101485
--- Comment #8 from Jan Schultke <janschultke at googlemail dot com> --- It is a tiny bit pessimistic if it uses std::convertible_to instead of std::__boolean_testable or what it was called. I cannot come up with an example that produces a false positive though (which is crucial for correctness), and if we cover 99% of enums, that's still much better than just std::byte. Nice job.
