52 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9// UNSUPPORTED: no-threads10// UNSUPPORTED: c++03, c++11, c++1411 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 21int 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