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 reset
15 
16 #include <memory>
17 #include <cassert>
18 
19 struct A
20 {
21     static int count;
AA22     A() {++count;}
AA23     A(const A&) {++count;}
~AA24     virtual ~A() {--count;}
25 };
26 
27 int A::count = 0;
28 
29 struct B
30     : public A
31 {
32     static int count;
BB33     B() {++count;}
BB34     B(const B&) {++count;}
~BB35     virtual ~B() {--count;}
36 };
37 
38 int B::count = 0;
39 
main()40 int main()
41 {
42     {
43     std::unique_ptr<A[]> p(new A);
44     assert(A::count == 1);
45     assert(B::count == 0);
46     A* i = p.get();
47     p.reset(new B);
48     assert(A::count == 1);
49     assert(B::count == 1);
50     }
51     assert(A::count == 0);
52     assert(B::count == 0);
53     {
54     std::unique_ptr<A[]> p(new B);
55     assert(A::count == 1);
56     assert(B::count == 1);
57     A* i = p.get();
58     p.reset(new B);
59     assert(A::count == 1);
60     assert(B::count == 1);
61     }
62     assert(A::count == 0);
63     assert(B::count == 0);
64 }
65