move_convert01.fail.cpp revision b64f8b07c104c6cc986570ac8ee0ed16a9f23976 
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
21struct A
22{
23    static int count;
24    A() {++count;}
25    A(const A&) {++count;}
26    virtual ~A() {--count;}
27};
28
29int A::count = 0;
30
31struct B
32    : public A
33{
34    static int count;
35    B() {++count;}
36    B(const B&) {++count;}
37    virtual ~B() {--count;}
38};
39
40int B::count = 0;
41
42int 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