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a945c346 | 1 | // Copyright (C) 2005-2024 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/>. | |
ba4b172f | 17 | |
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18 | // { dg-require-fileio "" } |
19 | ||
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20 | // 27.6.2.4 basic_ostream seek members [lib.ostream.seeks] |
21 | // @require@ %-*.tst %-*.txt | |
22 | // @diff@ %-*.tst %-*.txt | |
23 | ||
24 | #include <ostream> | |
25 | #include <istream> | |
26 | #include <fstream> | |
debac9f4 | 27 | #include <cstdlib> |
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28 | #include <testsuite_hooks.h> |
29 | ||
30 | const wchar_t* s = L" lootpack, peanut butter wolf, rob swift, madlib, quasimoto"; | |
31 | const int times = 10; | |
32 | ||
33 | void write_rewind(std::wiostream& stream) | |
34 | { | |
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35 | for (int j = 0; j < times; j++) |
36 | { | |
37 | std::streampos begin = stream.tellp(); | |
38 | ||
39 | for (int i = 0; i < times; ++i) | |
40 | stream << j << L'-' << i << s << L'\n'; | |
41 | ||
42 | stream.seekp(begin); | |
43 | } | |
44 | VERIFY( stream.good() ); | |
45 | } | |
46 | ||
47 | void check_contents(std::wiostream& stream) | |
48 | { | |
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49 | stream.clear(); |
50 | stream.seekg(0, std::wios::beg); | |
51 | int i = 0; | |
52 | int loop = times * times + 2; | |
53 | while (i < loop) | |
54 | { | |
55 | stream.ignore(80, L'\n'); | |
56 | if (stream.good()) | |
57 | ++i; | |
58 | else | |
59 | break; | |
60 | } | |
61 | VERIFY( i == times ); | |
62 | } | |
63 | ||
64 | // fstream | |
65 | // libstdc++/2346 | |
66 | void test02() | |
67 | { | |
68 | std::wfstream ofstrm; | |
69 | ofstrm.open("wistream_seeks-3.txt", std::wios::out); | |
70 | if (!ofstrm) | |
71 | std::abort(); | |
72 | write_rewind(ofstrm); | |
73 | ofstrm.close(); | |
74 | ||
75 | std::wfstream ifstrm; | |
76 | ifstrm.open("wistream_seeks-3.txt", std::wios::in); | |
77 | check_contents(ifstrm); | |
78 | ifstrm.close(); | |
79 | } | |
80 | ||
81 | int main() | |
82 | { | |
83 | test02(); | |
84 | return 0; | |
85 | } |