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//===----------------------------------------------------------------------===//
//
// ÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊÊThe LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <mutex>
// template <class Mutex> class unique_lock;
// unique_lock& operator=(unique_lock const&) = delete;
#include <mutex>
#include <cassert>
std::mutex m0;
std::mutex m1;
int main()
{
std::unique_lock<std::mutex> lk0(m0);
std::unique_lock<std::mutex> lk1(m1);
lk1 = lk0;
assert(lk1.mutex() == &m0);
assert(lk1.owns_lock() == true);
assert(lk0.mutex() == nullptr);
assert(lk0.owns_lock() == false);
}
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