[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

[glisse at gcc dot gnu.org]

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



--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> 2013-03-30 09:06:44 
UTC ---

I assume (needs to be checked) this is related to the issue, reported

elsewhere, that makes the size of

std::tuple<std::tuple<std::tuple<std::tuple<>>>> grow linearly with the nesting

depth.