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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>
// shared_ptr
// shared_ptr(const shared_ptr& r);
#include <memory>
#include <cassert>
#include "test_macros.h"
struct A
{
static int count;
A() {++count;}
A(const A&) {++count;}
~A() {--count;}
};
int A::count = 0;
int main(int, char**)
{
{
std::shared_ptr<A> pA(new A);
assert(pA.use_count() == 1);
assert(A::count == 1);
{
std::shared_ptr<A> pA2(pA);
assert(A::count == 1);
assert(pA.use_count() == 2);
assert(pA2.use_count() == 2);
assert(pA2.get() == pA.get());
}
assert(pA.use_count() == 1);
assert(A::count == 1);
}
assert(A::count == 0);
{
std::shared_ptr<A> pA;
assert(pA.use_count() == 0);
assert(A::count == 0);
{
std::shared_ptr<A> pA2(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);
{
std::shared_ptr<A const> pA(new A);
std::shared_ptr<A const> pA2(pA);
assert(pA.get() == pA2.get());
}
return 0;
}
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