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: no-threads
10
11 // <mutex>
12
13 // struct once_flag;
14
15 // once_flag& operator=(const once_flag&) = delete;
16
17 #include <mutex>
18
main(int,char **)19 int main(int, char**)
20 {
21 std::once_flag f;
22 std::once_flag f2;
23 f2 = f;
24
25 return 0;
26 }
27