[Bug libstdc++/51083] gnu++0x: resolving overloaded functions belonging to different namespaces

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51083

--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-11-10 
19:03:37 UTC ---
slightly further reduced

#include <complex>

namespace a
{
  template<typename> class Mat { };

  template<typename T>
    struct Mat2
    {
      Mat2(Mat<T>) { }
    };

  template<typename T>
    int
    imag(Mat2<T>)
    { return 1; }
}

int main()
{
  a::Mat< std::complex<double> > c;
  return imag(c);
}