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// { dg-do compile { target c++17 } } #include <initializer_list> struct B { }; template <class T> struct A { A(std::initializer_list<T>); A(T, B); }; A a { 1, B() }; template <class,class> struct same; template <class T> struct same<T,T> { }; same<decltype(a), A<int>> s;