[Bug c++/82632] copy deduction candidate erroneously preferred over deduction-guide

[barry.revzin at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82632

--- Comment #1 from Barry Revzin <barry.revzin at gmail dot com> ---
Actually, I'm pretty sure that gcc is correct here while this is a clang bug
for rejecting. The copy deduction candidate is more specialized, which is
preferred first over the deduction-guide.