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//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// <memory>
// shared_ptr
// shared_ptr(shared_ptr&& r);
#include <memory>
#include <cassert>
struct A
{
static int count;
A() {++count;}
A(const A&) {++count;}
~A() {--count;}
};
int A::count = 0;
int main()
{
{
std::shared_ptr<A> pA(new A);
assert(pA.use_count() == 1);
assert(A::count == 1);
{
A* p = pA.get();
std::shared_ptr<A> pA2(std::move(pA));
assert(A::count == 1);
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
assert(pA.use_count() == 0);
assert(pA2.use_count() == 1);
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
assert(pA.use_count() == 2);
assert(pA2.use_count() == 2);
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
assert(pA2.get() == p);
}
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
assert(pA.use_count() == 0);
assert(A::count == 0);
#else // _LIBCPP_HAS_NO_RVALUE_REFERENCES
assert(pA.use_count() == 1);
assert(A::count == 1);
#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES
}
assert(A::count == 0);
{
std::shared_ptr<A> pA;
assert(pA.use_count() == 0);
assert(A::count == 0);
{
std::shared_ptr<A> pA2(std::move(pA));
assert(A::count == 0);
assert(pA.use_count() == 0);
assert(pA2.use_count() == 0);
assert(pA2.get() == pA.get());
}
assert(pA.use_count() == 0);
assert(A::count == 0);
}
assert(A::count == 0);
}
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