[Bug c++/105406] coroutines: since 11.3 co_await attempts to copy a move-only value when await_transform(T &) exists

[dvratil at kde dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105406

--- Comment #1 from Daniel Vrátil <dvratil at kde dot org> ---
Link to godbolt: https://godbolt.org/z/MecdTEzMT