[Bug libstdc++/90415] [9/10 Regression] std::is_copy_constructible<std::tuple<std::any>> is incomplete

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90415

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
          Component|c++                         |libstdc++

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think this is a libstdc++ bug, because Clang has always rejected the example
with any version of the libstdc++ headers. And I know what's going on, and
might have a fix.