1 // PR c++/63522 2 // { dg-do compile { target c++11 } } 3 4 template <typename...> struct tuple; 5 template <typename...> void slice(); 6 template <int Index, typename...> using slice_result = decltype(slice<Index>); 7 template <typename Tuple, typename... Tuples, int... ElementIndices, 8 typename = 9 typename tuple<slice_result<ElementIndices, Tuples...>, 10 slice_result<ElementIndices, Tuples...>...>::type> // { dg-error "parameter pack" } 11 void zip_with(Tuple...); 12 decltype(zip_with(0)) d; // { dg-error "no match" } 13