| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // UNSUPPORTED: c++98, c++03 |
| |
| // <mutex> |
| |
| // template <class ...Mutex> class lock_guard; |
| |
| // explicit lock_guard(Mutex&...); |
| |
| // MODULES_DEFINES: _LIBCPP_ABI_VARIADIC_LOCK_GUARD |
| #define _LIBCPP_ABI_VARIADIC_LOCK_GUARD |
| #include <mutex> |
| |
| template <class LG> |
| void test_conversion(LG) {} |
| |
| int main() |
| { |
| using M = std::mutex; |
| M m0, m1, m2; |
| M n0, n1, n2; |
| { |
| using LG = std::lock_guard<>; |
| LG lg = {}; // expected-error{{chosen constructor is explicit in copy-initialization}} |
| test_conversion<LG>({}); // expected-error{{no matching function for call}} |
| ((void)lg); |
| } |
| { |
| using LG = std::lock_guard<M, M>; |
| LG lg = {m0, m1}; // expected-error{{chosen constructor is explicit in copy-initialization}} |
| test_conversion<LG>({n0, n1}); // expected-error{{no matching function for call}} |
| ((void)lg); |
| } |
| { |
| using LG = std::lock_guard<M, M, M>; |
| LG lg = {m0, m1, m2}; // expected-error{{chosen constructor is explicit in copy-initialization}} |
| test_conversion<LG>({n0, n1, n2}); // expected-error{{no matching function for call}} |
| } |
| } |