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 duration& d);
15 
16 #include <chrono>
17 #include <cassert>
18 
main()19 int main()
20 {
21     std::chrono::seconds s(3);
22     s += std::chrono::seconds(2);
23     assert(s.count() == 5);
24     s += std::chrono::minutes(2);
25     assert(s.count() == 125);
26 }
27