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 #include <utility>
11 #include <string>
12 #include <complex>
13 
14 #include <cassert>
15 
main()16 int main()
17 {
18 #if _LIBCPP_STD_VER > 11
19     typedef std::complex<float> cf;
20     {
21     auto t1 = std::make_pair<int, cf> ( 42, { 1,2 } );
22     assert ( std::get<int>(t1) == 42 );
23     assert ( std::get<cf>(t1).real() == 1 );
24     assert ( std::get<cf>(t1).imag() == 2 );
25     }
26 
27     {
28     const std::pair<int, const int> p1 { 1, 2 };
29     const int &i1 = std::get<int>(p1);
30     const int &i2 = std::get<const int>(p1);
31     assert ( i1 == 1 );
32     assert ( i2 == 2 );
33     }
34 
35     {
36     typedef std::unique_ptr<int> upint;
37     std::pair<upint, int> t(upint(new int(4)), 42);
38     upint p = std::get<0>(std::move(t)); // get rvalue
39     assert(*p == 4);
40     assert(std::get<0>(t) == nullptr); // has been moved from
41     }
42 
43 #endif
44 }
45