[Bug libstdc++/63456] unordered_map incorrectly frees _M_single_bucket. Patch Included

[fdumont at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63456

François Dumont <fdumont at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2014-10-05
                 CC|                            |fdumont at gcc dot gnu.org
           Assignee|unassigned at gcc dot gnu.org      |fdumont at gcc dot 
gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from François Dumont <fdumont at gcc dot gnu.org> ---
I of course confirm the bug. Occur only if you copy assign to an empty instance
from a non-empty one like this:

  std::unordered_set<int> s1, s2;
  s2.insert(2);

  s1 = s2;

Thanks for reporting.