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 // UNSUPPORTED: c++98, c++03, c++11, c++14
12
13 // <mutex>
14
15 // template <class ...Mutex> class scoped_lock;
16
17 // explicit scoped_lock(Mutex&...);
18
19 #include <mutex>
20 #include "test_macros.h"
21
22 template <class LG>
test_conversion(LG)23 void test_conversion(LG) {}
24
main()25 int main()
26 {
27 using M = std::mutex;
28 M m0, m1, m2;
29 M n0, n1, n2;
30 {
31 using LG = std::scoped_lock<>;
32 LG lg = {}; // expected-error{{chosen constructor is explicit in copy-initialization}}
33 test_conversion<LG>({}); // expected-error{{no matching function for call}}
34 ((void)lg);
35 }
36 {
37 using LG = std::scoped_lock<M>;
38 LG lg = {m0}; // expected-error{{chosen constructor is explicit in copy-initialization}}
39 test_conversion<LG>({n0}); // expected-error{{no matching function for call}}
40 ((void)lg);
41 }
42 {
43 using LG = std::scoped_lock<M, M>;
44 LG lg = {m0, m1}; // expected-error{{chosen constructor is explicit in copy-initialization}}
45 test_conversion<LG>({n0, n1}); // expected-error{{no matching function for call}}
46 ((void)lg);
47 }
48 {
49 using LG = std::scoped_lock<M, M, M>;
50 LG lg = {m0, m1, m2}; // expected-error{{chosen constructor is explicit in copy-initialization}}
51 test_conversion<LG>({n0, n1, n2}); // expected-error{{no matching function for call}}
52 }
53 }
54