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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 #include <streambuf>
19 #include <istream>
20 #include <testsuite_hooks.h>
21
22 struct SB : std::streambuf
23 {
24 virtual int_type underflow() { throw 1; }
25 };
26
27 void
28 test01()
29 {
30 SB sb;
31 std::istream is(&sb);
32 int i;
33 is >> i;
34 VERIFY( is.bad() );
35 }
36
37 int
38 main()
39 {
40 test01();
41 }