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a945c346 | 1 | // Copyright (C) 2003-2024 Free Software Foundation, Inc. |
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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 | |
748086b7 | 6 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
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15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
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17 | |
18 | // 27.8.1.4 Overridden virtual functions | |
19 | ||
0c20e4ec NS |
20 | // { dg-require-fileio "" } |
21 | ||
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22 | #include <locale> |
23 | #include <fstream> | |
24 | #include <testsuite_hooks.h> | |
25 | #include <testsuite_character.h> | |
26 | ||
27 | // libstdc++/12790 | |
28 | void test01() | |
29 | { | |
30 | using namespace std; | |
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31 | using __gnu_test::pod_uchar; |
32 | typedef basic_filebuf<pod_uchar>::traits_type traits_type; | |
5e93f39f | 33 | |
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34 | const char* name = "tmp_seekoff_12790"; |
35 | ||
36 | locale loc(locale::classic(), | |
37 | new codecvt<traits_type::char_type, char, | |
38 | traits_type::state_type>); | |
39 | ||
821503db | 40 | basic_filebuf<pod_uchar> fb; |
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41 | fb.pubimbue(loc); |
42 | ||
43 | fb.open(name, ios_base::out); | |
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44 | fb.sputc(pod_uchar::from<char>(0xff)); |
45 | fb.sputc(pod_uchar::from<char>(0)); | |
46 | fb.sputc(pod_uchar::from<char>(0)); | |
47 | fb.sputc(pod_uchar::from<char>('a')); | |
48 | fb.sputc(pod_uchar::from<char>('a')); | |
49 | fb.sputc(pod_uchar::from<char>('a')); | |
50 | fb.sputc(pod_uchar::from<char>('a')); | |
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51 | fb.close(); |
52 | ||
53 | fb.open(name, ios_base::in); | |
54 | fb.sbumpc(); | |
55 | fb.sbumpc(); | |
56 | fb.sbumpc(); | |
57 | ||
58 | // Check that seekoff resets the state when seeking to beginning. | |
59 | traits_type::pos_type pos = fb.pubseekoff(0, ios_base::beg); | |
60 | VERIFY( pos != traits_type::pos_type(traits_type::off_type(-1)) ); | |
61 | ||
62 | traits_type::int_type c = fb.sbumpc(); | |
63 | VERIFY( c != traits_type::eof() ); | |
64 | VERIFY( traits_type::eq(traits_type::to_char_type(c), | |
821503db | 65 | pod_uchar::from<char>(0xff)) ); |
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66 | fb.sbumpc(); |
67 | fb.sbumpc(); | |
68 | fb.sbumpc(); | |
69 | fb.sbumpc(); | |
70 | fb.sbumpc(); | |
71 | c = fb.sbumpc(); | |
72 | VERIFY( c != traits_type::eof() ); | |
73 | VERIFY( traits_type::eq(traits_type::to_char_type(c), | |
821503db | 74 | pod_uchar::from<char>('a')) ); |
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75 | c = fb.sbumpc(); |
76 | VERIFY( c == traits_type::eof() ); | |
77 | ||
78 | fb.close(); | |
79 | } | |
80 | ||
81 | int main() | |
82 | { | |
83 | test01(); | |
84 | return 0; | |
85 | } |