https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119144
--- Comment #11 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Giuseppe D'Angelo from comment #8) > I'll get rid of the string, I guess. > It was to test some other datatype (not just arithmetic or scalars) in > tuple_cat. Yeah, I used string_view which still gives us the non-scalar checking, without depending on the unfortunate properties of our std::string.