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 // Due to C++17 inline variables ASAN flags this test as containing an ODR
11 // violation because Clock::is_steady is defined in both the dylib and this TU.
12 // UNSUPPORTED: asan
13
14 // Starting with C++17, Clock::is_steady is inlined (but not before LLVM-3.9!),
15 // but before C++17 it requires the symbol to be present in the dylib, which
16 // is only shipped starting with macosx10.9.
17 // XFAIL: with_system_cxx_lib=macosx10.7 && (c++98 || c++03 || c++11 || c++14 || apple-clang-7 || apple-clang-8.0)
18 // XFAIL: with_system_cxx_lib=macosx10.8 && (c++98 || c++03 || c++11 || c++14 || apple-clang-7 || apple-clang-8.0)
19
20 // <chrono>
21
22 // system_clock
23
24 // check clock invariants
25
26 #include <chrono>
27
28 template <class T>
test(const T &)29 void test(const T &) {}
30
main()31 int main()
32 {
33 typedef std::chrono::system_clock C;
34 static_assert((std::is_same<C::rep, C::duration::rep>::value), "");
35 static_assert((std::is_same<C::period, C::duration::period>::value), "");
36 static_assert((std::is_same<C::duration, C::time_point::duration>::value), "");
37 static_assert((std::is_same<C::time_point::clock, C>::value), "");
38 static_assert((C::is_steady || !C::is_steady), "");
39 test(std::chrono::system_clock::is_steady);
40 }
41