1*67e74705SXin Li // RUN: %clang_cc1 -fsyntax-only -Wunused-parameter -verify -std=c++11 %s 2*67e74705SXin Li template<typename T> 3*67e74705SXin Li struct X { 4*67e74705SXin Li T f0(T x); 5*67e74705SXin Li T f1(T x); 6*67e74705SXin Li T f2(T); 7*67e74705SXin Li template<typename U> U f3(U x); 8*67e74705SXin Li template<typename U> U f4(U x); 9*67e74705SXin Li template<typename U> U f5(U); 10*67e74705SXin Li }; 11*67e74705SXin Li f0(T x)12*67e74705SXin Litemplate<typename T> T X<T>::f0(T x) { return x; } f1(T)13*67e74705SXin Litemplate<typename T> T X<T>::f1(T) { return T(); } f2(T x)14*67e74705SXin Litemplate<typename T> T X<T>::f2(T x) { return T(); } // expected-warning{{unused parameter 'x'}} f3(U x)15*67e74705SXin Litemplate<typename T> template<typename U> U X<T>::f3(U x) { return x; } f4(U)16*67e74705SXin Litemplate<typename T> template<typename U> U X<T>::f4(U) { return U(); } f5(U x)17*67e74705SXin Litemplate<typename T> template<typename U> U X<T>::f5(U x) { return U(); } // expected-warning{{unused parameter 'x'}} 18*67e74705SXin Li test_X(X<int> & x,int i)19*67e74705SXin Livoid test_X(X<int> &x, int i) { 20*67e74705SXin Li x.f0(i); 21*67e74705SXin Li x.f1(i); 22*67e74705SXin Li x.f2(i); 23*67e74705SXin Li x.f3(i); 24*67e74705SXin Li x.f4(i); 25*67e74705SXin Li x.f5(i); 26*67e74705SXin Li } 27*67e74705SXin Li 28*67e74705SXin Li // Make sure both parameters aren't considered unused. 29*67e74705SXin Li template <typename... T> test_pack(T...t,T...s)30*67e74705SXin Listatic int test_pack(T... t, T... s) 31*67e74705SXin Li { 32*67e74705SXin Li auto l = [&t...]() { return sizeof...(s); }; 33*67e74705SXin Li return l(); 34*67e74705SXin Li } 35