// PR c++/70505
// { dg-do compile { target c++11 } }

template <class X>
struct s
{
  template <class T>
  static constexpr T f1(const T x) {return x;}
  template <class T, T = f1<T>(sizeof(T))>
  static constexpr T f2(const T x) {return x;}
  static void f() {s<int>::f2(42);}
};

int main()
{
  s<int>::f();
}