[Bug libstdc++/66559] Uses-allocator construction disregarded by list::emplace_back

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66559

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Yes, I know what the bug is. If the container used
allocator_traits::construct() as it's supposed to then scoped_allocator_adaptor
would work. 

The problem is that std::list is missing all C++11 allocator support. There's
no point having separate bugs for every little piece. This is a duplicate.