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 // <shared_mutex> 11 12 // template <class Mutex> class shared_lock; 13 14 // shared_lock(); 15 16 #include <shared_mutex> 17 #include <cassert> 18 19 int main() 20 { 21 #if _LIBCPP_STD_VER > 11 22 std::shared_lock<std::shared_timed_mutex> ul; 23 assert(!ul.owns_lock()); 24 assert(ul.mutex() == nullptr); 25 #endif // _LIBCPP_STD_VER > 11 26 } 27
