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// UNSUPPORTED: c++03, c++11, c++14
10// <optional>
11
12// ~optional();
13
14#include <optional>
15#include <type_traits>
16#include <cassert>
17
18#include "test_macros.h"
19
20using std::optional;
21
22struct PODType {
23 int value;
24 int value2;
25};
26
27class X
28{
29public:
30 static bool dtor_called;
31 X() = default;
32 X(const X&) = default;
33 X& operator=(const X&) = default;
34 ~X() {dtor_called = true;}
35};
36
37bool X::dtor_called = false;
38
39int main(int, char**)
40{
41 {
42 typedef int T;
43 static_assert(std::is_trivially_destructible<T>::value, "");
44 static_assert(std::is_trivially_destructible<optional<T>>::value, "");
45 }
46 {
47 typedef double T;
48 static_assert(std::is_trivially_destructible<T>::value, "");
49 static_assert(std::is_trivially_destructible<optional<T>>::value, "");
50 }
51 {
52 typedef PODType T;
53 static_assert(std::is_trivially_destructible<T>::value, "");
54 static_assert(std::is_trivially_destructible<optional<T>>::value, "");
55 }
56 {
57 typedef X T;
58 static_assert(!std::is_trivially_destructible<T>::value, "");
59 static_assert(!std::is_trivially_destructible<optional<T>>::value, "");
60 {
61 X x;
62 optional<X> opt{x};
63 assert(X::dtor_called == false);
64 }
65 assert(X::dtor_called == true);
66 }
67
68 return 0;
69}
70

source code of libcxx/test/std/utilities/optional/optional.object/optional.object.dtor/dtor.pass.cpp