1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <memory>
10
11// shared_ptr
12
13// template<class D, class T> D* get_deleter(const shared_ptr<T>& p);
14
15// UNSUPPORTED: no-rtti
16
17#include <memory>
18#include <cassert>
19#include "test_macros.h"
20#include "deleter_types.h"
21
22struct A
23{
24 static int count;
25
26 A() {++count;}
27 A(const A&) {++count;}
28 ~A() {--count;}
29};
30
31int A::count = 0;
32
33int main(int, char**)
34{
35 {
36 {
37 A* ptr = new A;
38 std::shared_ptr<A> p(ptr, test_deleter<A>(3));
39 test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
40 assert(test_deleter<A>::count == 1);
41 assert(test_deleter<A>::dealloc_count == 0);
42 assert(d);
43 assert(d->state() == 3);
44 }
45 assert(A::count == 0);
46 assert(test_deleter<A>::count == 0);
47 assert(test_deleter<A>::dealloc_count == 1);
48 }
49 test_deleter<A>::dealloc_count = 0;
50 {
51 {
52 std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
53 test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
54 assert(test_deleter<A>::count == 1);
55 assert(test_deleter<A>::dealloc_count == 0);
56 assert(d);
57 assert(d->state() == 3);
58 }
59 assert(A::count == 0);
60 assert(test_deleter<A>::count == 0);
61 assert(test_deleter<A>::dealloc_count == 1);
62 }
63 test_deleter<A>::dealloc_count = 0;
64 {
65 std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
66 std::default_delete<A>* d = std::get_deleter<std::default_delete<A> >(p: p);
67 assert(d == 0);
68 }
69
70 return 0;
71}
72

source code of libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.getdeleter/get_deleter.pass.cpp