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: libcpp-has-no-threads
11 
12 // <future>
13 
14 // enum class launch
15 // {
16 //     async = 1,
17 //     deferred = 2,
18 //     any = async | deferred
19 // };
20 
21 #include <future>
22 #include <cassert>
23 
main()24 int main()
25 {
26 #ifdef _LIBCPP_HAS_NO_STRONG_ENUMS
27     static_assert(static_cast<int>(std::launch::any) ==
28                  (static_cast<int>(std::launch::async) | static_cast<int>(std::launch::deferred)), "");
29 #else
30     static_assert(std::launch::any == (std::launch::async | std::launch::deferred), "");
31     static_assert(std::launch(0) == (std::launch::async & std::launch::deferred), "");
32     static_assert(std::launch::any == (std::launch::async ^ std::launch::deferred), "");
33     static_assert(std::launch::deferred == ~std::launch::async, "");
34     std::launch x = std::launch::async;
35     x &= std::launch::deferred;
36     assert(x == std::launch(0));
37     x = std::launch::async;
38     x |= std::launch::deferred;
39     assert(x == std::launch::any);
40     x ^= std::launch::deferred;
41     assert(x == std::launch::async);
42 #endif
43     static_assert(static_cast<int>(std::launch::async) == 1, "");
44     static_assert(static_cast<int>(std::launch::deferred) == 2, "");
45 }
46