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 
21 struct A
22 {
23     static int count;
AA24     A() {++count;}
AA25     A(const A&) {++count;}
~AA26     virtual ~A() {--count;}
27 };
28 
29 int A::count = 0;
30 
31 struct B
32 //    : public A
33 {
34     static int count;
BB35     B() {++count;}
BB36     B(const B&) {++count;}
~BB37     virtual ~B() {--count;}
38 };
39 
40 int B::count = 0;
41 
main()42 int main()
43 {
44     {
45     B* p = new B;
46     std::auto_ptr<B> ap(p);
47     std::unique_ptr<A> up(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 = 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