1 // PR c++/48530 2 // { dg-do compile { target c++11 } } 3 4 template<class T, 5 class = decltype(T()) 6 > 7 char f(int); 8 9 template<class> 10 char (&f(...))[2]; 11 12 struct DelDtor { 13 DelDtor() = default; 14 ~DelDtor() = delete; 15 }; 16 17 static_assert(sizeof(f<DelDtor>(0)) != 1, "Error"); 18