1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 // UNSUPPORTED: libcpp-has-no-threads 10 // UNSUPPORTED: c++98, c++03, c++11, c++14 11 12 // <mutex> 13 14 // template <class ...Mutex> class scoped_lock; 15 16 // explicit scoped_lock(Mutex&...); 17 18 #include <mutex> 19 #include "test_macros.h" 20 21 template <class LG> 22 void test_conversion(LG) {} 23 24 int main(int, char**) 25 { 26 using M = std::mutex; 27 M m0, m1, m2; 28 M n0, n1, n2; 29 { 30 using LG = std::scoped_lock<>; 31 LG lg = {}; // expected-error{{chosen constructor is explicit in copy-initialization}} 32 test_conversion<LG>({}); // expected-error{{no matching function for call}} 33 ((void)lg); 34 } 35 { 36 using LG = std::scoped_lock<M>; 37 LG lg = {m0}; // expected-error{{chosen constructor is explicit in copy-initialization}} 38 test_conversion<LG>({n0}); // expected-error{{no matching function for call}} 39 ((void)lg); 40 } 41 { 42 using LG = std::scoped_lock<M, M>; 43 LG lg = {m0, m1}; // expected-error{{chosen constructor is explicit in copy-initialization}} 44 test_conversion<LG>({n0, n1}); // expected-error{{no matching function for call}} 45 ((void)lg); 46 } 47 { 48 using LG = std::scoped_lock<M, M, M>; 49 LG lg = {m0, m1, m2}; // expected-error{{chosen constructor is explicit in copy-initialization}} 50 test_conversion<LG>({n0, n1, n2}); // expected-error{{no matching function for call}} 51 } 52 53 return 0; 54 } 55