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 #include "../../deleter.h"
20 
21 // Can't assign from lvalue
22 
23 struct A
24 {
25     static int count;
AA26     A() {++count;}
AA27     A(const A&) {++count;}
~AA28     virtual ~A() {--count;}
29 };
30 
31 int A::count = 0;
32 
33 struct B
34     : public A
35 {
36     static int count;
BB37     B() {++count;}
BB38     B(const B&) {++count;}
~BB39     virtual ~B() {--count;}
40 };
41 
42 int B::count = 0;
43 
main()44 int main()
45 {
46     {
47     std::unique_ptr<B, Deleter<B> > s(new B);
48     A* p = s.get();
49     std::unique_ptr<A, Deleter<A> > s2;
50     s2 = s;
51     assert(s2.get() == p);
52     assert(s.get() == 0);
53     assert(A::count == 1);
54     assert(B::count == 1);
55     assert(s2.get_deleter().state() == 5);
56     assert(s.get_deleter().state() == 0);
57     }
58     assert(A::count == 0);
59     assert(B::count == 0);
60 }
61