Yay! The static_assert(false) thing was resolved as no longer ifndr.

Hey!

I saw a commit for it, but I don't think it's released... So "the next one" probably. Same story with applying to all modes. More details on my answer here.

I'm wondering where you wanted to use this. Was it a generic context, where you didn't know what types you were getting? Also, I think it will interfere with the retern-value optimization.