[Bug libstdc++/52745] GCC4.7 vector uses copy instead of move constructor

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52745

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-03-27 
23:30:23 UTC ---
That's known, it's a design choice: in that case you are essentially back to
the unsafe 4.6 behavior. Look for 'move_if_noexcept'.