https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81279
--- Comment #7 from Jason Vas Dias <jason.vas.dias at gmail dot com> --- Created attachment 41665 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41665&action=edit Fixed version - also demonstrates point : addresses of members increase So when I mangle it to actually print each member's address in order, whenever the tuple is printed : std::ostream &tuple::operator <<(std::ostream &out) const { std::cerr << " out: @ :" << (static_cast<const void*> (reinterpret_cast<const _Head *>(this))) << std::endl; return _t.operator<<( out << head() << " " ); } $ ./tTuple < /tmp/t out: @ :0x7ffc6f93d410 one out: @ :0x7ffc6f93d430 two out: @ :0x7ffc6f93d450 three fun( one two three ) one two three This would not be the case had std::tuple been used - the addresses would be DECREASING . But I am now able to use with no problems in C++14, C++17 under 7.1.0 . Thanks!
