1// RUN: %clang_cc1 -fsyntax-only -Wunused-parameter -verify -std=c++11 %s
2template<typename T>
3struct 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
12template<typename T> T X<T>::f0(T x) { return x; }
13template<typename T> T X<T>::f1(T) { return T(); }
14template<typename T> T X<T>::f2(T x) { return T(); } // expected-warning{{unused parameter 'x'}}
15template<typename T> template<typename U> U X<T>::f3(U x) { return x; }
16template<typename T> template<typename U> U X<T>::f4(U) { return U(); }
17template<typename T> template<typename U> U X<T>::f5(U x) { return U(); } // expected-warning{{unused parameter 'x'}}
18
19void 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.
29template <typename... T>
30static int test_pack(T... t, T... s)
31{
32  auto l = [&t...]() { return sizeof...(s); };
33  return l();
34}
35