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 // scoped_lock& operator=(scoped_lock const&) = delete;
17 
18 #include <mutex>
19 #include "test_macros.h"
20 
21 int main(int, char**)
22 {
23     using M = std::mutex;
24     M m0, m1, m2;
25     M om0, om1, om2;
26     {
27         using LG = std::scoped_lock<>;
28         LG lg1, lg2;
29         lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
30     }
31     {
32         using LG = std::scoped_lock<M>;
33         LG lg1(m0);
34         LG lg2(om0);
35         lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
36     }
37     {
38         using LG = std::scoped_lock<M, M>;
39         LG lg1(m0, m1);
40         LG lg2(om0, om1);
41         lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
42     }
43     {
44         using LG = std::scoped_lock<M, M, M>;
45         LG lg1(m0, m1, m2);
46         LG lg2(om0, om1, om2);
47         lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
48     }
49 
50   return 0;
51 }
52