GDB (xrefs)

5.cc
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1 // Copyright (C) 2013-2018 Free Software Foundation, Inc.
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 assign_5 {
19
20 int counter = 0;
21
22 struct mixin_counter
23 {
24 mixin_counter() { ++counter; }
25 mixin_counter(mixin_counter const&) { ++counter; }
26 ~mixin_counter() { --counter; }
27 };
28
29 struct value_type : private mixin_counter { };
30
31 void test()
32 {
33 using O = gdb::optional<value_type>;
34
35 // Check std::nullopt_t and 'default' (= {}) assignment
36
37 #ifndef GDB_OPTIONAL
38 {
39 O o;
40 o = std::nullopt;
41 VERIFY( !o );
42 }
43 #endif
44
45 #ifndef GDB_OPTIONAL
46 {
47 O o { gdb::in_place };
48 o = std::nullopt;
49 VERIFY( !o );
50 }
51 #endif
52
53 #ifndef GDB_OPTIONAL
54 {
55 O o;
56 o = {};
57 VERIFY( !o );
58 }
59 #endif
60
61 #ifndef GDB_OPTIONAL
62 {
63 O o { gdb::in_place };
64 o = {};
65 VERIFY( !o );
66 }
67 #endif
68 {
69 gdb::optional<std::vector<int>> ovi{{1, 2, 3}};
70 VERIFY(ovi->size() == 3);
71 VERIFY((*ovi)[0] == 1 && (*ovi)[1] == 2 && (*ovi)[2] == 3);
72 ovi = {4, 5, 6, 7};
73 VERIFY(ovi->size() == 4);
74 VERIFY((*ovi)[0] == 4 && (*ovi)[1] == 5 &&
75 (*ovi)[2] == 6 && (*ovi)[3] == 7);
76 }
77 VERIFY( counter == 0 );
78 }
79
80 } // namespace assign_5
assign_5::mixin_counter
Definition: 5.cc:22
gdb::in_place
constexpr gdb::in_place_t in_place
Definition: gdb_optional.h:33
assign_5::value_type
Definition: 5.cc:29
VERIFY
#define VERIFY
Definition: optional-selftests.c:31
assign_5::test
void test()
Definition: 5.cc:31
assign_5
Definition: 5.cc:18
assign_5::counter
int counter
Definition: 5.cc:20
assign_5::mixin_counter::mixin_counter
mixin_counter()
Definition: 5.cc:24
gdb::optional
Definition: gdb_optional.h:51
assign_5::mixin_counter::~mixin_counter
~mixin_counter()
Definition: 5.cc:26
assign_5::mixin_counter::mixin_counter
mixin_counter(mixin_counter const &)
Definition: 5.cc:25