partial-ordering.cpp revision 77d6bb9e223496aa5288294f34e7225d1f65dddc 
1// RUN: %clang_cc1 -std=c++0x -fsyntax-only -verify %s
2
3// Various tests related to partial ordering of variadic templates.
4template<typename ...Types> struct tuple;
5
6template<typename Tuple>
7struct X1 {
8  static const unsigned value = 0;
9};
10
11template<typename Head, typename ...Tail>
12struct X1<tuple<Head, Tail...> > {
13  static const unsigned value = 1;
14};
15
16template<typename Head, typename ...Tail>
17struct X1<tuple<Head, Tail&...> > {
18  static const unsigned value = 2;
19};
20
21template<typename Head, typename ...Tail>
22struct X1<tuple<Head&, Tail&...> > {
23  static const unsigned value = 3;
24};
25
26int check0[X1<tuple<>>::value == 0? 1 : -1];
27int check1[X1<tuple<int>>::value == 2? 1 : -1];
28int check2[X1<tuple<int, int>>::value == 1? 1 : -1];
29int check3[X1<tuple<int, int&>>::value == 2? 1 : -1];
30int check4[X1<tuple<int&, int&>>::value == 3? 1 : -1];
31