[Bug libstdc++/120717] Passing reference to incomplete type to std::move_only_function emits false-positive '-Wsfinae-incomplete' warning

[ykakeyama3014 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120717

--- Comment #5 from Yaito Kakeyama <ykakeyama3014 at gmail dot com> ---
Thank you for your work on this!