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 // <mutex>
13
14 // template <class Mutex> class unique_lock;
15
16 // unique_lock();
17
18 #include <mutex>
19 #include <cassert>
20
main()21 int main()
22 {
23 std::unique_lock<std::mutex> ul;
24 assert(!ul.owns_lock());
25 assert(ul.mutex() == nullptr);
26 }
27