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