[Bug libstdc++/23978] New: tr1::tie doesn't work with std::pair

["chris at bubblescope dot net" <gcc-bugzilla at gcc dot gnu dot org>]

The following program doesn't work. It does if I tie to a tuple. I suspect it should work, but aren't sure 
why. It's possible this isn't a bug and is in fact a bug in the TR1 standard, but I know boost's 
implementation of tie and tuple support it. Don't try debugging this unless you enjoy digging through 
evil macro filled template code :) 

I'm going to look at this in about a week once I've finished moving to the other end of the country and 
didn't want to forget it.

#include <tr1/tuple>
#include <tr1/utility>

int main(void)
{
std::pair<int,int> p(1,1);
int a,b;
std::tr1::tie(a,b) = p;
}

-- 
           Summary: tr1::tie doesn't work with std::pair
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: chris at bubblescope dot net
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23978