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
12
13 // <mutex>
14
15 // template <class ...Mutex> class lock_guard;
16
17 // lock_guard& operator=(lock_guard const&) = delete;
18
19 // MODULES_DEFINES: _LIBCPP_ABI_VARIADIC_LOCK_GUARD
20 #define _LIBCPP_ABI_VARIADIC_LOCK_GUARD
21 #include <mutex>
22
main()23 int main()
24 {
25 using M = std::mutex;
26 M m0, m1, m2;
27 M om0, om1, om2;
28 {
29 using LG = std::lock_guard<>;
30 LG lg1, lg2;
31 lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
32 }
33 {
34 using LG = std::lock_guard<M, M>;
35 LG lg1(m0, m1);
36 LG lg2(om0, om1);
37 lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
38 }
39 {
40 using LG = std::lock_guard<M, M, M>;
41 LG lg1(m0, m1, m2);
42 LG lg2(om0, om1, om2);
43 lg1 = lg2; // expected-error{{overload resolution selected deleted operator '='}}
44 }
45 }
46