[Bug c++/120990] Narrowing conversion in std::function return value is not reported

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120990

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I am not sure if a warning is even wanted here. This is just one bad symptoms
of std::function.