https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92057
--- Comment #9 from pj at patrickjohnston dot org --- I'm sorry to belabour this, but I don't see how narrowing conversions even has anything to do with p0608. The only modification described by the paper (relevant to this case) is the requirement that `T_i x[] = {std::forward<T>(t)};` is well formed, which it is, regardless of whether the conversion is provably lossless ( https://wandbox.org/permlink/ybECPFinbwPMtxJF ).