1 // PR c++/78124 2 // { dg-do compile { target c++11 } } 3 4 struct base { basebase5 explicit constexpr base(int&&) {} 6 }; 7 8 struct derived: base { 9 using base::base; 10 }; 11 main()12 int main() 13 { 14 derived d { 0 }; 15 } 16 17