1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <memory>
11
12// unique_ptr
13
14// Test unique_ptr(pointer) ctor
15
16#include <memory>
17#include <cassert>
18
19// template <class U> explicit unique_ptr(auto_ptr<U>&);
20
21struct A
22{
23    static int count;
24    A() {++count;}
25    A(const A&) {++count;}
26    virtual ~A() {--count;}
27};
28
29int A::count = 0;
30
31struct B
32    : public A
33{
34    static int count;
35    B() {++count;}
36    B(const B&) {++count;}
37    virtual ~B() {--count;}
38};
39
40int B::count = 0;
41
42int main()
43{
44    {
45    B* p = new B;
46    std::auto_ptr<B> ap(p);
47    std::unique_ptr<A> up(std::move(ap));
48    assert(up.get() == p);
49    assert(ap.get() == 0);
50    assert(A::count == 1);
51    assert(B::count == 1);
52    }
53    assert(A::count == 0);
54    assert(B::count == 0);
55    {
56    B* p = new B;
57    std::auto_ptr<B> ap(p);
58    std::unique_ptr<A> up;
59    up = std::move(ap);
60    assert(up.get() == p);
61    assert(ap.get() == 0);
62    assert(A::count == 1);
63    assert(B::count == 1);
64    }
65    assert(A::count == 0);
66    assert(B::count == 0);
67}
68