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// time_point
13
14// template <class Duration2>
15//   time_point(const time_point<clock, Duration2>& t);
16
17#include <chrono>
18#include <cassert>
19
20int main()
21{
22    typedef std::chrono::system_clock Clock;
23    typedef std::chrono::microseconds Duration1;
24    typedef std::chrono::milliseconds Duration2;
25    {
26    std::chrono::time_point<Clock, Duration2> t2(Duration2(3));
27    std::chrono::time_point<Clock, Duration1> t1 = t2;
28    assert(t1.time_since_epoch() == Duration1(3000));
29    }
30#if _LIBCPP_STD_VER > 11
31    {
32    constexpr std::chrono::time_point<Clock, Duration2> t2(Duration2(3));
33    constexpr std::chrono::time_point<Clock, Duration1> t1 = t2;
34    static_assert(t1.time_since_epoch() == Duration1(3000), "");
35    }
36#endif
37}
38