[Bug libstdc++/61023] set/map move assignment doesn't move (or copy) the comparator

[nevin at eviloverlord dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=61023

--- Comment #1 from Nevin Liber <nevin at eviloverlord dot com> ---
Created attachment 32719
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32719&action=edit
Test case using set showing the problem