Eli Friedman | 88530d5 | 2012-03-01 21:32:56 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -fsyntax-only -Wunused-parameter -verify -std=c++11 %s |
Douglas Gregor | c077e45 | 2010-04-19 23:56:20 +0000 | [diff] [blame] | 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 | } |
Eli Friedman | 88530d5 | 2012-03-01 21:32:56 +0000 | [diff] [blame] | 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 | } |