[Bug libstdc++/65122] std::vector doesn't honor element alignment

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65122

--- Comment #17 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think this is fixed for GCC 7 with -std=c++17 support.