| // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s |
| |
| // Various tests related to partial ordering of variadic templates. |
| template<typename ...Types> struct tuple; |
| |
| template<typename Tuple> |
| struct X1 { |
| static const unsigned value = 0; |
| }; |
| |
| template<typename Head, typename ...Tail> |
| struct X1<tuple<Head, Tail...> > { |
| static const unsigned value = 1; |
| }; |
| |
| template<typename Head, typename ...Tail> |
| struct X1<tuple<Head, Tail&...> > { |
| static const unsigned value = 2; |
| }; |
| |
| template<typename Head, typename ...Tail> |
| struct X1<tuple<Head&, Tail&...> > { |
| static const unsigned value = 3; |
| }; |
| |
| int check0[X1<tuple<>>::value == 0? 1 : -1]; |
| int check1[X1<tuple<int>>::value == 2? 1 : -1]; |
| int check2[X1<tuple<int, int>>::value == 1? 1 : -1]; |
| int check3[X1<tuple<int, int&>>::value == 2? 1 : -1]; |
| int check4[X1<tuple<int&, int&>>::value == 3? 1 : -1]; |
| |
| // Partial ordering of function templates. |
| template<typename T1, typename T2, typename ...Rest> |
| int &f0(T1, T2, Rest...); |
| |
| template<typename T1, typename T2> |
| float &f0(T1, T2); |
| |
| void test_f0() { |
| int &ir1 = f0(1, 2.0, 'a'); |
| float &fr1 = f0(1, 2.0); |
| } |
| |
| template<typename T1, typename T2, typename ...Rest> |
| int &f1(T1, T2, Rest...); |
| |
| template<typename T1, typename T2> |
| float &f1(T1, T2, ...); |
| |
| void test_f1() { |
| int &ir1 = f1(1, 2.0, 'a'); |
| } |
| |
| template<typename T1, typename T2, typename ...Rest> |
| int &f2(T1, T2, Rest...); |
| |
| float &f2(...); |
| |
| void test_f2() { |
| int &ir1 = f2(1, 2.0, 'a'); |
| } |