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 // <chrono>
11 
12 // duration
13 
14 // duration operator+() const;
15 
16 #include <chrono>
17 #include <cassert>
18 
main()19 int main()
20 {
21     {
22     const std::chrono::minutes m(3);
23     std::chrono::minutes m2 = +m;
24     assert(m.count() == m2.count());
25     }
26 #ifndef _LIBCPP_HAS_NO_CONSTEXPR
27     {
28     constexpr std::chrono::minutes m(3);
29     constexpr std::chrono::minutes m2 = +m;
30     static_assert(m.count() == m2.count(), "");
31     }
32 #endif
33 }
34