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// void reset();
14
15#include <memory>
16#include <cassert>
17
18#include "test_macros.h"
19
20struct B
21{
22 static int count;
23
24 B() {++count;}
25 B(const B&) {++count;}
26 virtual ~B() {--count;}
27};
28
29int B::count = 0;
30
31struct A
32 : public B
33{
34 static int count;
35
36 A() {++count;}
37 A(const A& other) : B(other) {++count;}
38 ~A() {--count;}
39};
40
41int A::count = 0;
42
43int main(int, char**)
44{
45 {
46 std::shared_ptr<B> p(new B);
47 p.reset();
48 assert(A::count == 0);
49 assert(B::count == 0);
50 assert(p.use_count() == 0);
51 assert(p.get() == 0);
52 }
53 assert(A::count == 0);
54 {
55 std::shared_ptr<B> p;
56 p.reset();
57 assert(A::count == 0);
58 assert(B::count == 0);
59 assert(p.use_count() == 0);
60 assert(p.get() == 0);
61 }
62 assert(A::count == 0);
63
64 return 0;
65}
66

source code of libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.mod/reset.pass.cpp