[Bug libstdc++/91243] is_invocable mishandles functions returning indestructible types by value

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91243

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |rejects-valid
             Status|WAITING                     |NEW

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I think it's caused by a compiler bug though. For C++17 and up, G++ doesn't
object to returning a non-destructible type unless the temporary gets
materialized.