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 converting move assignment
15 
16 #include <memory>
17 #include <cassert>
18 
19 // Can't assign from lvalue
20 
21 struct A
22 {
23     static int count;
24     A() {++count;}
25     A(const A&) {++count;}
26     virtual ~A() {--count;}
27 };
28 
29 int A::count = 0;
30 
31 struct B
32     : public A
33 {
34     static int count;
35     B() {++count;}
36     B(const B&) {++count;}
37     virtual ~B() {--count;}
38 };
39 
40 int B::count = 0;
41 
42 int main()
43 {
44     {
45     std::unique_ptr<B[]> s(new B);
46     A* p = s.get();
47     std::unique_ptr<A[]> s2;
48     s2 = s;
49     assert(s2.get() == p);
50     assert(s.get() == 0);
51     assert(A::count == 1);
52     assert(B::count == 1);
53     }
54     assert(A::count == 0);
55     assert(B::count == 0);
56 }
57