1 // { dg-do compile { target c++17 } } 2 3 template <class T> 4 struct A 5 { 6 static constexpr auto x = T::x; 7 }; 8 9 struct B; 10 A<B> a; 11 12 struct B 13 { 14 static constexpr auto x = 42; 15 }; 16 17 auto x = a.x; 18