https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94061
--- Comment #3 from Frank Heckenbach <f.heckenb...@fh-soft.de> ---
(In reply to Patrick Palka from comment #2)
> How do you define it? It works if we define it as
>
> auto operator <=> (const B& b) const {
> return A::operator<=>(b);
> }
>
> but not if it's defined as
>
> auto operator <=> (const B& b) const {
> return static_cast<const A&>(*this) <=> static_cast<const A&>(b);
> }
I'd do the former. I don't know what the standard says exactly, but intuitively
it seems to me that "protected" should suffice, also by comparison with
constructors.
