[Bug c++/53067] New: c++0x GCC 4.7.0 Regression std::ref with unordered sets

[cmaloney at tagged dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53067

             Bug #: 53067
           Summary: c++0x GCC 4.7.0 Regression std::ref with unordered
                    sets
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: cmalo...@tagged.com


Building the following code with gcc4.7 snapshot 20120421 fails, but passed
with gcc4.6.

$g++ -std=c++11

#include <functional>
#include <unordered_set>

int main(int, char**){
  std::unordered_map<int> Foo;
  ref(Foo);
}