[Bug libstdc++/119899] Custom invoke has name collision with std::invoke, without using namespace std

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119899

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The question should std::ref be in the std namespace and participate in ADL
with std namespace.

I think so.

The "workaround" works as then invoke becomes qualified and ADL no longer comes
into play.