1 // 1999-10-14 bkoz
2
3 // Copyright (C) 1999-2021 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20
21 // 27.6.1.1.2 class basic_istream::sentry
22
23 #include <istream>
24 #include <sstream>
25 #include <testsuite_hooks.h>
26
27 // libstdc++/9562
28 void
test03()29 test03()
30 {
31 std::stringbuf strbuf01;
32 std::istream strm1(&strbuf01);
33 const std::istream::sentry sentry1(strm1);
34
35 VERIFY( bool(sentry1) == false );
36 }
37
main()38 int main()
39 {
40 test03();
41 return 0;
42 }
43