https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92416
Marek Polacek <mpolacek at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mpolacek at gcc dot gnu.org --- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> --- We now say: 92416.C: In function ‘constexpr auto cmp()’: 92416.C:5:12: sorry, unimplemented: three-way comparison of vectors 5 | return i <=> i; | ~~^~~~~ 92416.C:2:1: error: invalid return type ‘auto’ of ‘constexpr’ function ‘constexpr auto cmp()’ 2 | cmp() | ^~~