[Bug c++/51989] std::deque::iterator recognised as container

[leonid at volnitsky dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51989

--- Comment #6 from Leonid Volnitsky <leonid at volnitsky dot com> 2012-01-25 10:29:29 UTC ---
Also,  new is_container<T> with decltype, have value == 0 for any, non-void
type.