| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // UNSUPPORTED: libcpp-has-no-threads |
| |
| // <mutex> |
| |
| // template <class Mutex> class lock_guard; |
| |
| // explicit lock_guard(mutex_type& m); |
| |
| #include <mutex> |
| |
| int main() |
| { |
| std::mutex m; |
| std::lock_guard<std::mutex> lg = m; // expected-error{{no viable conversion}} |
| } |