https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107761
--- Comment #7 from Desmond Gold <cooky.ykooc922 at gmail dot com> --- Here's an updated version of the implementation with following changes: + followed coding style of GNU (maybe not all) + added initial implementation of std::submdspan facilities (without constraints and preconditions yet) + tweaked some of the problems in previous implementation https://godbolt.org/z/Mxs1YP8n7 summary + implemented c++23 <mdspan> + implemented c++26 std::submdspan facilities in <mdspan> + added c++23 feature (concepts only): '__tuple_like' and '__pair_like' to be used by '__mdspan::__index_pair_like' + added alias template '_Nth_type_t' which would supposedly be placed inside <bits/utility.h> + still no documentations, incomplete preconditions and constraints, and incomplete tests
