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> shared_ptr(nullptr_t, D d);
14
15#include <memory>
16#include <cassert>
17#include "test_macros.h"
18#include "deleter_types.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(int, char**)
32{
33 {
34 std::shared_ptr<A> p(nullptr, test_deleter<A>(3));
35 assert(A::count == 0);
36 assert(p.use_count() == 1);
37 assert(p.get() == 0);
38 assert(test_deleter<A>::count == 1);
39 assert(test_deleter<A>::dealloc_count == 0);
40#ifndef TEST_HAS_NO_RTTI
41 test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
42 assert(d);
43 assert(d->state() == 3);
44#endif
45 }
46 assert(A::count == 0);
47 assert(test_deleter<A>::count == 0);
48 assert(test_deleter<A>::dealloc_count == 1);
49
50 {
51 std::shared_ptr<A const> p(nullptr, test_deleter<A const>(3));
52 assert(p.get() == nullptr);
53 }
54
55 return 0;
56}
57

source code of libcxx/test/std/utilities/memory/util.smartptr/util.smartptr.shared/util.smartptr.shared.const/nullptr_t_deleter.pass.cpp