[Bug libstdc++/100824] ranges::size should treat the subexpression as an lvalue

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100824

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
And LWG 3403 was fixed by r12-1228.

I plan to backport these three patches too.

Thanks for all the bug reports like this!