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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