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 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
11 
12 // TODO: Remove this when filesystem gets integrated into the dylib
13 // REQUIRES: c++filesystem
14 
15 // <chrono>
16 
17 // file_clock
18 
19 // rep should be signed
20 
21 #include <chrono>
22 #include <cassert>
23 
main()24 int main()
25 {
26     static_assert(std::is_signed<std::chrono::file_clock::rep>::value, "");
27     assert(std::chrono::file_clock::duration::min() <
28            std::chrono::file_clock::duration::zero());
29 }
30