move01.pass.cpp revision c52f43e72dfcea03037729649da84c23b3beb04a 
1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// <memory>
11
12// unique_ptr
13
14// Test unique_ptr move assignment
15
16// test move assignment.  Should only require a MoveConstructible deleter, or if
17//    deleter is a reference, not even that.
18
19#include <memory>
20#include <cassert>
21
22#include "../deleter.h"
23
24struct A
25{
26    static int count;
27    A() {++count;}
28    A(const A&) {++count;}
29    ~A() {--count;}
30};
31
32int A::count = 0;
33
34int main()
35{
36    {
37    std::unique_ptr<A[]> s1(new A[3]);
38    A* p = s1.get();
39    assert(A::count == 3);
40    std::unique_ptr<A[]> s2(new A[2]);
41    assert(A::count == 5);
42    s2 = std::move(s1);
43    assert(A::count == 3);
44    assert(s2.get() == p);
45    assert(s1.get() == 0);
46    }
47    assert(A::count == 0);
48    {
49    std::unique_ptr<A[], Deleter<A[]> > s1(new A[4], Deleter<A[]>(5));
50    A* p = s1.get();
51    assert(A::count == 4);
52    std::unique_ptr<A[], Deleter<A[]> > s2(new A[5]);
53    assert(A::count == 9);
54    s2 = std::move(s1);
55    assert(s2.get() == p);
56    assert(s1.get() == 0);
57    assert(A::count == 4);
58    assert(s2.get_deleter().state() == 5);
59    assert(s1.get_deleter().state() == 0);
60    }
61    assert(A::count == 0);
62    {
63    CDeleter<A[]> d1(5);
64    std::unique_ptr<A[], CDeleter<A[]>&> s1(new A[6], d1);
65    A* p = s1.get();
66    assert(A::count == 6);
67    CDeleter<A[]> d2(6);
68    std::unique_ptr<A[], CDeleter<A[]>&> s2(new A[3], d2);
69    assert(A::count == 9);
70    s2 = std::move(s1);
71    assert(A::count == 6);
72    assert(s2.get() == p);
73    assert(s1.get() == 0);
74    assert(d1.state() == 5);
75    assert(d2.state() == 5);
76    }
77    assert(A::count == 0);
78}
79