Thanks! Out of paranoia, I have adjusted one suppression to encompass the entire statement as we haven't done subexpression suppression (outside of perhaps some _Pragmas) elsewhere. Will merge after the tests cycle.

I've pushed a merge to resolve a conflict - the warning suppression is still necessary despite the change from == to cmp_equal.

Thanks for all of these <mdspan> PRs, this is great progress! 🎉