[Bug libstdc++/110352] [C++26] P2630R4 submdspan

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110352

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Also:
Fix submdspan for C++26 https://wg21.link/P3355R1