[Bug c++/81700] Unresolved function type when taking address of operator() of generic lambda

[gufideg at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81700

--- Comment #1 from Guillaume Racicot <gufideg at gmail dot com> ---
Still happen with 7.3 and trunk on godbolt: https://godbolt.org/g/xXUn1v