get_deleter.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02c 
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// shared_ptr
13
14// template<class D, class T> D* get_deleter(const shared_ptr<T>& p);
15
16#include <memory>
17#include <cassert>
18#include "../test_deleter.h"
19
20struct A
21{
22    static int count;
23
24    A() {++count;}
25    A(const A&) {++count;}
26    ~A() {--count;}
27};
28
29int A::count = 0;
30
31int main()
32{
33    {
34        {
35            A* ptr = new A;
36            std::shared_ptr<A> p(ptr, test_deleter<A>(3));
37            test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
38            assert(test_deleter<A>::count == 1);
39            assert(test_deleter<A>::dealloc_count == 0);
40            assert(d);
41            assert(d->state() == 3);
42        }
43        assert(A::count == 0);
44        assert(test_deleter<A>::count == 0);
45        assert(test_deleter<A>::dealloc_count == 1);
46    }
47    test_deleter<A>::dealloc_count = 0;
48    {
49        {
50            std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
51            test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
52            assert(test_deleter<A>::count == 1);
53            assert(test_deleter<A>::dealloc_count == 0);
54            assert(d);
55            assert(d->state() == 3);
56        }
57        assert(A::count == 0);
58        assert(test_deleter<A>::count == 0);
59        assert(test_deleter<A>::dealloc_count == 1);
60    }
61    test_deleter<A>::dealloc_count = 0;
62    {
63        std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
64        std::default_delete<A>* d = std::get_deleter<std::default_delete<A> >(p);
65        assert(d == 0);
66    }
67}
68