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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// <memory>
// UNSUPPORTED: c++03, c++11, c++14
// UNSUPPORTED: libcpp-no-deduction-guides
// template<class T> class shared_ptr
// shared_ptr(weak_ptr<T>) -> shared_ptr<T>
// shared_ptr(unique_ptr<T>) -> shared_ptr<T>
#include <memory>
#include <cassert>
#include "test_macros.h"
struct A {};
struct D {
void operator()(A* ptr) const
{
delete ptr;
}
};
int main(int, char**)
{
{
std::shared_ptr<A> s0(new A);
std::weak_ptr<A> w = s0;
auto s = std::shared_ptr(w);
ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A>);
assert(s0.use_count() == 2);
assert(s.use_count() == 2);
assert(s0.get() == s.get());
}
{
std::unique_ptr<A> u(new A);
A* const uPointee = u.get();
std::shared_ptr s = std::move(u);
ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A>);
assert(u == nullptr);
assert(s.get() == uPointee);
}
{
std::unique_ptr<A, D> u(new A, D{});
A* const uPointee = u.get();
std::shared_ptr s(std::move(u));
ASSERT_SAME_TYPE(decltype(s), std::shared_ptr<A>);
assert(u == nullptr);
assert(s.get() == uPointee);
}
return 0;
}
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