1 //===----------------------------------------------------------------------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 // <utility>
11
12 // template <class T1, class T2> struct pair
13
14 // tuple_element<I, pair<T1, T2> >::type
15
16 #include <utility>
17
18 template <class T1, class T2>
test()19 void test()
20 {
21 {
22 typedef T1 Exp1;
23 typedef T2 Exp2;
24 typedef std::pair<T1, T2> P;
25 static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
26 static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
27 }
28 {
29 typedef T1 const Exp1;
30 typedef T2 const Exp2;
31 typedef std::pair<T1, T2> const P;
32 static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
33 static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
34 }
35 {
36 typedef T1 volatile Exp1;
37 typedef T2 volatile Exp2;
38 typedef std::pair<T1, T2> volatile P;
39 static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
40 static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
41 }
42 {
43 typedef T1 const volatile Exp1;
44 typedef T2 const volatile Exp2;
45 typedef std::pair<T1, T2> const volatile P;
46 static_assert((std::is_same<typename std::tuple_element<0, P>::type, Exp1>::value), "");
47 static_assert((std::is_same<typename std::tuple_element<1, P>::type, Exp2>::value), "");
48 }
49 }
50
main()51 int main()
52 {
53 test<int, short>();
54 test<int*, char>();
55 }
56