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 <utility>
18 #include <cassert>
19 
20 // Can't assign from const lvalue
21 
22 struct A
23 {
24     static int count;
AA25     A() {++count;}
AA26     A(const A&) {++count;}
~AA27     virtual ~A() {--count;}
28 };
29 
30 int A::count = 0;
31 
32 struct B
33     : public A
34 {
35     static int count;
BB36     B() {++count;}
BB37     B(const B&) {++count;}
~BB38     virtual ~B() {--count;}
39 };
40 
41 int B::count = 0;
42 
main()43 int main()
44 {
45     {
46     const boost::unique_ptr<B[]> s(new B);
47     A* p = s.get();
48     boost::unique_ptr<A[]> s2;
49     s2 = s;
50     assert(s2.get() == p);
51     assert(s.get() == 0);
52     assert(A::count == 1);
53     assert(B::count == 1);
54     }
55     assert(A::count == 0);
56     assert(B::count == 0);
57 }
58