[Bug c++/79555] Warning 'base class should be explicitly initialized in the copy constructor' issued in wrong case

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79555

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes sorry, I messed up my test using GCC 6!