[Bug libstdc++/55043] [4.7/4.8 Regression] issue with nesting unordered_map containing unique_ptr into vector

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55043

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-10-23 23:06:43 UTC ---
Oh dear.

If a type is not nothrow MoveInsertable and is not CopyInsertable, should we
just move it, with unspecified behaviour if an except is thrown?