1 // { dg-options -std=c++17 } 2 3 template <class T> struct A 4 { 5 template <auto v> struct Y; 6 template <auto* p> struct Y<p> { using type1 = decltype (p); }; 7 template <auto** pp> struct Y<pp> { using type2 = decltype (pp); }; 8 }; 9 10 int i; 11 int *p; 12 13 A<void>::Y<&i>::type1 t1; 14 A<void>::Y<&p>::type2 t2; 15 16