[Bug libstdc++/58982] [4.9 Regression] std::vector<std::atomic<int>> vai(10); does not compile anymore

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58982

--- Comment #3 from Paolo Carlini <paolo.carlini at oracle dot com> ---
Well, something closer to a correct minimal fix would be is_trivial &&
is_copy_assignable. Jon, I think that in general in this file minimal fixes
would involve && with the existing is_trivial.