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e2882c85 | 1 | // Copyright (C) 2013-2018 Free Software Foundation, Inc. |
d35d1958 PA |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | namespace cons_copy { | |
19 | ||
20 | struct tracker | |
21 | { | |
22 | tracker(int value) : value(value) { ++count; } | |
23 | ~tracker() { --count; } | |
24 | ||
25 | tracker(tracker const& other) : value(other.value) { ++count; } | |
26 | tracker(tracker&& other) : value(other.value) | |
27 | { | |
28 | other.value = -1; | |
29 | ++count; | |
30 | } | |
31 | ||
32 | tracker& operator=(tracker const&) = default; | |
33 | tracker& operator=(tracker&&) = default; | |
34 | ||
35 | int value; | |
36 | ||
37 | static int count; | |
38 | }; | |
39 | ||
40 | int tracker::count = 0; | |
41 | ||
42 | struct exception { }; | |
43 | ||
44 | struct throwing_copy | |
45 | { | |
46 | throwing_copy() = default; | |
47 | throwing_copy(throwing_copy const&) { throw exception {}; } | |
48 | }; | |
49 | ||
50 | void test() | |
51 | { | |
52 | // [20.5.4.1] Constructors | |
53 | ||
54 | { | |
55 | gdb::optional<long> o; | |
56 | auto copy = o; | |
57 | VERIFY( !copy ); | |
58 | VERIFY( !o ); | |
59 | } | |
60 | ||
61 | { | |
62 | const long val = 0x1234ABCD; | |
63 | gdb::optional<long> o { gdb::in_place, val}; | |
64 | auto copy = o; | |
65 | VERIFY( copy ); | |
66 | VERIFY( *copy == val ); | |
67 | #ifndef GDB_OPTIONAL | |
68 | VERIFY( o && o == val ); | |
69 | #endif | |
70 | } | |
71 | ||
72 | { | |
73 | gdb::optional<tracker> o; | |
74 | auto copy = o; | |
75 | VERIFY( !copy ); | |
76 | VERIFY( tracker::count == 0 ); | |
77 | VERIFY( !o ); | |
78 | } | |
79 | ||
80 | { | |
81 | gdb::optional<tracker> o { gdb::in_place, 333 }; | |
82 | auto copy = o; | |
83 | VERIFY( copy ); | |
84 | VERIFY( copy->value == 333 ); | |
85 | VERIFY( tracker::count == 2 ); | |
86 | VERIFY( o && o->value == 333 ); | |
87 | } | |
88 | ||
89 | enum outcome { nothrow, caught, bad_catch }; | |
90 | ||
91 | { | |
92 | outcome result = nothrow; | |
93 | gdb::optional<throwing_copy> o; | |
94 | ||
95 | try | |
96 | { | |
97 | auto copy = o; | |
98 | } | |
99 | catch(exception const&) | |
100 | { result = caught; } | |
101 | catch(...) | |
102 | { result = bad_catch; } | |
103 | ||
104 | VERIFY( result == nothrow ); | |
105 | } | |
106 | ||
107 | { | |
108 | outcome result = nothrow; | |
109 | gdb::optional<throwing_copy> o { gdb::in_place }; | |
110 | ||
111 | try | |
112 | { | |
113 | auto copy = o; | |
114 | } | |
115 | catch(exception const&) | |
116 | { result = caught; } | |
117 | catch(...) | |
118 | { result = bad_catch; } | |
119 | ||
120 | VERIFY( result == caught ); | |
121 | } | |
122 | ||
123 | VERIFY( tracker::count == 0 ); | |
124 | } | |
125 | ||
126 | } // namespace cons_copy |