The other day I ran across some code like this: template struct Holder { T t_; explicit Holder() : t_() {} Holder(const Holder& rhs) : t_(rhs.t_) {} ~~~~ }; This was in an old codebase, which until recently had still been using GCC's `-Weffc++` to enforce C++98 idioms such as the explicitly non-defaulted copy constructor depicted above. > If you're still using `-Weffc++`, please, > [stop using it!](https://github.com/google/googletest/issues/898#issuecomment-332582070)
