1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <chrono>
10 
11 // duration
12 
13 // constexpr duration operator++(int);  // constexpr in C++17
14 
15 #include <chrono>
16 #include <cassert>
17 
18 #include "test_macros.h"
19 
20 #if TEST_STD_VER > 14
test_constexpr()21 constexpr bool test_constexpr()
22 {
23     std::chrono::hours h1(3);
24     std::chrono::hours h2 = h1++;
25     return h1.count() == 4 && h2.count() == 3;
26 }
27 #endif
28 
main(int,char **)29 int main(int, char**)
30 {
31     {
32     std::chrono::hours h1(3);
33     std::chrono::hours h2 = h1++;
34     assert(h1.count() == 4);
35     assert(h2.count() == 3);
36     }
37 
38 #if TEST_STD_VER > 14
39     static_assert(test_constexpr(), "");
40 #endif
41 
42   return 0;
43 }
44