[Bug c++/93862] [10 Regression] ICE on static_cast of rvalue-reference-to-array of unknown bound [P0338] to its known static bound

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93862

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
I have a patch but both (2) and (3) are invalid, see
<https://gcc.gnu.org/ml/gcc-patches/2019-10/msg00433.html>.  (icc also rejects
it.)