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// template<class Y, class D, class A> shared_ptr(Y* p, D d, A a);
12
13#include <memory>
14#include <cassert>
15#include "test_macros.h"
16#include "deleter_types.h"
17#include "test_allocator.h"
18#include "min_allocator.h"
19
20#include "types.h"
21struct A
22{
23 static int count;
24
25 A() {++count;}
26 A(const A&) {++count;}
27 ~A() {--count;}
28};
29
30int A::count = 0;
31
32// LWG 3233. Broken requirements for shared_ptr converting constructors
33// https://cplusplus.github.io/LWG/issue3233
34// https://llvm.org/PR60258
35// Invalid constructor SFINAE for std::shared_ptr's array ctors
36static_assert( std::is_constructible<std::shared_ptr<int>, int*, test_deleter<int>, test_allocator<int> >::value, "");
37static_assert(!std::is_constructible<std::shared_ptr<int>, int*, bad_deleter, test_allocator<int> >::value, "");
38static_assert( std::is_constructible<std::shared_ptr<base>, derived*, test_deleter<base>, test_allocator<base> >::value, "");
39static_assert(!std::is_constructible<std::shared_ptr<A>, int*, test_deleter<A>, test_allocator<A> >::value, "");
40
41#if TEST_STD_VER >= 17
42static_assert( std::is_constructible<std::shared_ptr<int[]>, int*, test_deleter<int>, test_allocator<int> >::value, "");
43static_assert(!std::is_constructible<std::shared_ptr<int[]>, int*, bad_deleter, test_allocator<int> >::value, "");
44static_assert(!std::is_constructible<std::shared_ptr<int[]>, int(*)[], test_deleter<int>, test_allocator<int> >::value, "");
45static_assert( std::is_constructible<std::shared_ptr<int[5]>, int*, test_deleter<int>, test_allocator<int> >::value, "");
46static_assert(!std::is_constructible<std::shared_ptr<int[5]>, int*, bad_deleter, test_allocator<int> >::value, "");
47static_assert(!std::is_constructible<std::shared_ptr<int[5]>, int(*)[5], test_deleter<int>, test_allocator<int> >::value, "");
48#endif
49
50
51int main(int, char**)
52{
53 {
54 test_allocator_statistics alloc_stats;
55 {
56 A* ptr = new A;
57 std::shared_ptr<A> p(ptr, test_deleter<A>(3), test_allocator<A>(5, &alloc_stats));
58 assert(A::count == 1);
59 assert(p.use_count() == 1);
60 assert(p.get() == ptr);
61 assert(test_deleter<A>::count == 1);
62 assert(test_deleter<A>::dealloc_count == 0);
63#ifndef TEST_HAS_NO_RTTI
64 test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
65 assert(d);
66 assert(d->state() == 3);
67#endif
68 assert(alloc_stats.count == 1);
69 assert(alloc_stats.alloc_count == 1);
70 }
71 assert(A::count == 0);
72 assert(test_deleter<A>::count == 0);
73 assert(test_deleter<A>::dealloc_count == 1);
74 assert(alloc_stats.count == 0);
75 assert(alloc_stats.alloc_count == 0);
76 test_deleter<A>::dealloc_count = 0;
77 }
78
79 {
80 test_allocator_statistics alloc_stats;
81 {
82 A const* ptr = new A;
83 std::shared_ptr<A const> p(ptr, test_deleter<A const>(3), test_allocator<A>(5, &alloc_stats));
84 assert(A::count == 1);
85 assert(p.use_count() == 1);
86 assert(p.get() == ptr);
87 assert(test_deleter<A const>::count == 1);
88 assert(test_deleter<A const>::dealloc_count == 0);
89#ifndef TEST_HAS_NO_RTTI
90 test_deleter<A const>* d = std::get_deleter<test_deleter<A const> >(p);
91 assert(d);
92 assert(d->state() == 3);
93#endif
94 assert(alloc_stats.count == 1);
95 assert(alloc_stats.alloc_count == 1);
96 }
97 assert(A::count == 0);
98 assert(test_deleter<A const>::count == 0);
99 assert(test_deleter<A const>::dealloc_count == 1);
100 assert(alloc_stats.count == 0);
101 assert(alloc_stats.alloc_count == 0);
102 test_deleter<A const>::dealloc_count = 0;
103 }
104
105 // Test an allocator with a minimal interface
106 {
107 A* ptr = new A;
108 std::shared_ptr<A> p(ptr, test_deleter<A>(3), bare_allocator<void>());
109 assert(A::count == 1);
110 assert(p.use_count() == 1);
111 assert(p.get() == ptr);
112 assert(test_deleter<A>::count == 1);
113 assert(test_deleter<A>::dealloc_count == 0);
114#ifndef TEST_HAS_NO_RTTI
115 test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
116 assert(d);
117 assert(d->state() == 3);
118#endif
119 }
120 assert(A::count == 0);
121 assert(test_deleter<A>::count == 0);
122 assert(test_deleter<A>::dealloc_count == 1);
123 test_deleter<A>::dealloc_count = 0;
124
125#if TEST_STD_VER >= 11
126 // Test an allocator that returns class-type pointers
127 {
128 A* ptr = new A;
129 std::shared_ptr<A> p(ptr, test_deleter<A>(3), min_allocator<void>());
130 assert(A::count == 1);
131 assert(p.use_count() == 1);
132 assert(p.get() == ptr);
133 assert(test_deleter<A>::count == 1);
134 assert(test_deleter<A>::dealloc_count == 0);
135#ifndef TEST_HAS_NO_RTTI
136 test_deleter<A>* d = std::get_deleter<test_deleter<A> >(p);
137 assert(d);
138 assert(d->state() == 3);
139#endif
140 }
141 assert(A::count == 0);
142 assert(test_deleter<A>::count == 0);
143 assert(test_deleter<A>::dealloc_count == 1);
144
145 {
146 move_deleter<int> d(0);
147 std::shared_ptr<int> p2(new int, std::move(d), std::allocator<int>());
148 std::shared_ptr<int> p3(nullptr, std::move(d), std::allocator<int>());
149 }
150#endif // TEST_STD_VER >= 11
151
152 {
153 // Make sure we can't construct with:
154 // a) a deleter that doesn't have an operator ()(int*)
155 // b) a deleter that doesn't have a move constructor.
156 static_assert(!std::is_constructible<std::shared_ptr<int>, int*, bad_deleter,
157 test_allocator<A> >::value, "");
158 static_assert(!std::is_constructible<std::shared_ptr<int>, int*, no_move_deleter,
159 test_allocator<A> >::value, "");
160
161 // Make sure that we can construct a shared_ptr where the element type and pointer type
162 // aren't "convertible" but are "compatible".
163 static_assert(!std::is_constructible<std::shared_ptr<derived[4]>,
164 base[4], test_deleter<derived[4]>,
165 test_allocator<derived[4]> >::value, "");
166 }
167
168 return 0;
169}
170

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