[author of the blog post here]

Sadly, gcc 8 isn't smart enough to do that yet; I only implemented it for simple "return name_of_field;" accessors.

But it's an interesting idea, which I've filed as: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84895 - thanks.

Are there other cases where idiomatic C++ might lead to such an indirect suggestion being appropriate for accessing the field? (std::tuple, I suppose, but I'm not sure how often that would arise in practice...)