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 lock_guard; 15 16 // explicit lock_guard(mutex_type& m); 17 18 #include <mutex> 19 20 int main() 21 { 22 std::mutex m; 23 std::lock_guard<std::mutex> lg = m; // expected-error{{no viable conversion}} 24 } 25
