https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116399
--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I don't agree. Containers do:
class X {
using iterator = <implementation-defined>;
iterator begin();
iterator end();
};
So clearly the type is the same.
That's not how text_encoding::aliases_view is specified.
The standard doesn't say begin() and end() return the same type, and it doesn't
say aliases_view models common_range. So it's already unspecified.
