1 // PR c++/80840 2 // { dg-do compile { target c++11 } } 3 4 template <class T, T X> 5 struct Just; 6 7 template <const double& X> 8 struct Number { 9 static constexpr double value = X; 10 using result = Just<const double&, value>; 11 }; 12 main()13 int main() {} 14