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1 | // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> |
2 | ||
83ffe9cd | 3 | // Copyright (C) 2001-2023 Free Software Foundation, Inc. |
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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 | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
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17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
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19 | |
20 | // 27.8.1.4 Overridden virtual functions | |
21 | ||
22 | #include <streambuf> | |
23 | #include <locale> | |
24 | #include <cwchar> | |
25 | #include <testsuite_hooks.h> | |
26 | ||
27 | class MyTraits : public std::char_traits<wchar_t> | |
28 | { | |
29 | public: | |
30 | static bool eq(wchar_t c1, wchar_t c2) | |
31 | { | |
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32 | VERIFY( c1 != L'X' ); |
33 | VERIFY( c2 != L'X' ); | |
34 | return std::char_traits<wchar_t>::eq(c1, c2); | |
35 | } | |
36 | }; | |
37 | ||
38 | class MyBuf : public std::basic_streambuf<wchar_t, MyTraits> | |
39 | { | |
40 | wchar_t buffer[8]; | |
41 | ||
42 | public: | |
43 | MyBuf() | |
44 | { | |
45 | std::wmemset(buffer, L'X', sizeof(buffer) / sizeof(buffer[0])); | |
46 | std::wmemset(buffer + 2, L'f', 4); | |
47 | setg(buffer + 2, buffer + 2, buffer + 6); | |
48 | } | |
49 | }; | |
50 | ||
51 | // libstdc++/9538 | |
52 | void test08() | |
53 | { | |
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54 | MyBuf mb; |
55 | mb.sputbackc(L'a'); | |
56 | } | |
57 | ||
58 | int main() | |
59 | { | |
60 | test08(); | |
61 | return 0; | |
62 | } |