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// unique_ptr
12
13// test release
14
15#include <memory>
16#include <cassert>
17
18#include "test_macros.h"
19#include "unique_ptr_test_helper.h"
20
21template <bool IsArray>
22TEST_CONSTEXPR_CXX23 void test_basic() {
23 typedef typename std::conditional<IsArray, A[], A>::type VT;
24 const int expect_alive = IsArray ? 3 : 1;
25#if TEST_STD_VER >= 11
26 {
27 using U = std::unique_ptr<VT>;
28 U u; ((void)u);
29 ASSERT_NOEXCEPT(u.release());
30 }
31#endif
32 {
33 std::unique_ptr<VT> p(newValue<VT>(expect_alive));
34 if (!TEST_IS_CONSTANT_EVALUATED)
35 assert(A::count == expect_alive);
36 A* ap = p.get();
37 A* a = p.release();
38 if (!TEST_IS_CONSTANT_EVALUATED)
39 assert(A::count == expect_alive);
40 assert(p.get() == nullptr);
41 assert(ap == a);
42 assert(a != nullptr);
43
44 if (IsArray)
45 delete[] a;
46 else
47 delete a;
48
49 if (!TEST_IS_CONSTANT_EVALUATED)
50 assert(A::count == 0);
51 }
52 if (!TEST_IS_CONSTANT_EVALUATED)
53 assert(A::count == 0);
54}
55
56TEST_CONSTEXPR_CXX23 bool test() {
57 test_basic</*IsArray*/ false>();
58 test_basic<true>();
59
60 return true;
61}
62
63int main(int, char**) {
64 test();
65#if TEST_STD_VER >= 23
66 static_assert(test());
67#endif
68
69 return 0;
70}
71

source code of libcxx/test/std/utilities/smartptr/unique.ptr/unique.ptr.class/unique.ptr.modifiers/release.pass.cpp