xref: /llvm-project-15.0.7/libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.scoped/mutex.fail.cpp (revision a7f9895c)

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// UNSUPPORTED: no-threads
// UNSUPPORTED: c++03, c++11, c++14

// <mutex>

// template <class ...Mutex> class scoped_lock;

// explicit scoped_lock(Mutex&...);

#include <mutex>
#include "test_macros.h"

template <class LG>
void test_conversion(LG) {}

int main(int, char**)
{
    using M = std::mutex;
    M m0, m1, m2;
    M n0, n1, n2;
    {
        using LG = std::scoped_lock<>;
        LG lg = {}; // expected-error{{chosen constructor is explicit in copy-initialization}}
        test_conversion<LG>({}); // expected-error{{no matching function for call}}
        ((void)lg);
    }
    {
        using LG = std::scoped_lock<M>;
        LG lg = {m0}; // expected-error{{chosen constructor is explicit in copy-initialization}}
        test_conversion<LG>({n0}); // expected-error{{no matching function for call}}
        ((void)lg);
    }
    {
        using LG = std::scoped_lock<M, M>;
        LG lg = {m0, m1}; // expected-error{{chosen constructor is explicit in copy-initialization}}
        test_conversion<LG>({n0, n1}); // expected-error{{no matching function for call}}
        ((void)lg);
    }
    {
        using LG = std::scoped_lock<M, M, M>;
        LG lg = {m0, m1, m2}; // expected-error{{chosen constructor is explicit in copy-initialization}}
        test_conversion<LG>({n0, n1, n2}); // expected-error{{no matching function for call}}
    }

  return 0;
}