[Bug libstdc++/68995] Including both <tr1/functional> and <functional> can cause ADL problems in std::function SFINAE

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68995

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think TR1 is considered as non-supported now.