1 // Copyright (C) 2017-2020 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 // { dg-options "-std=gnu++17" }
19 // { dg-additional-options "-Wno-deprecated" { target c++2a } }
20 // { dg-do compile { target c++17 } }
21
22 // PR libstdc++/78939
23
24 #include <utility>
25
26 struct A { int i, j; };
27
28 int
test01()29 test01()
30 {
31 A a{};
32 const auto [i, j] = a;
33 return i + j;
34 }
35
36 int
test02()37 test02()
38 {
39 A a{};
40 volatile auto [i, j] = a; // deprecated in C++20
41 return i + j;
42 }
43
44 int
test03()45 test03()
46 {
47 A a{};
48 const volatile auto [i, j] = a; // deprecated in C++20
49 return i + j;
50 }
51