[Bug c++/84855] structered bindings require "decomposed" type to be copy'able

[h2+bugs at fsfe dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84855

--- Comment #2 from Hannes Hauswedell <h2+bugs at fsfe dot org> ---
Thanks for your explanation, I went to through cppreferences again and the
behaviour is now clear to me, although I still wonder why in the case of an
lvalue as "input", the step through the intermediary is not required to be
elided.