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

[wjwray at gmail dot com]

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

--- Comment #8 from Will Wray <wjwray at gmail dot com> ---
OK. I'll try to get full confirmation and clarification on legality,
with links to wording if possible, then open a new bug if valid.