[Bug libstdc++/56785] std::tuple of two elements does not apply empty base class optimization when one of its elements is a std::tuple with two elements

[gcc-bugzilla at contacts dot eelis.net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56785

--- Comment #10 from Eelis <gcc-bugzilla at contacts dot eelis.net> ---
I see what you mean! And while stuff with empty types and EBO is IMHO not
nearly as serious as random superfluous bytes that are inserted when you use
tuples of a bread and butter type like char, I agree it would be good to file a
ticket in http://llvm.org/bugs/ if there isn't one already. :)