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8d9254fc | 1 | // Copyright (C) 2004-2020 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 | // 27.6.1.3 unformatted input functions | |
19 | // @require@ %-*.tst %-*.txt | |
20 | // @diff@ %-*.tst %-*.txt | |
21 | ||
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22 | // { dg-require-fileio "" } |
23 | ||
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24 | #include <istream> |
25 | #include <fstream> | |
26 | #include <limits> | |
27 | #include <testsuite_hooks.h> | |
28 | ||
29 | // istream& ignore(streamsize n) | |
30 | void | |
31 | test01() | |
32 | { | |
33 | using namespace std; | |
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34 | |
35 | const char filename[] ="istream_unformatted-1.txt"; | |
36 | ios_base::iostate state1, state2; | |
37 | ||
38 | wifstream ifstrm; | |
39 | ifstrm.open(filename); | |
40 | ||
41 | state1 = ifstrm.rdstate(); | |
42 | VERIFY( state1 == ios_base::goodbit ); | |
43 | VERIFY( ifstrm.peek() == L'1' ); | |
44 | state2 = ifstrm.rdstate(); | |
45 | VERIFY( state1 == state2 ); | |
46 | ||
47 | state1 = ifstrm.rdstate(); | |
48 | ifstrm.ignore(1); | |
49 | VERIFY( ifstrm.gcount() == 1 ); | |
50 | state2 = ifstrm.rdstate(); | |
51 | VERIFY( state1 == state2 ); | |
52 | VERIFY( ifstrm.peek() == L'2' ); | |
53 | ||
54 | state1 = ifstrm.rdstate(); | |
55 | ifstrm.ignore(10); | |
56 | VERIFY( ifstrm.gcount() == 10 ); | |
57 | state2 = ifstrm.rdstate(); | |
58 | VERIFY( state1 == state2 ); | |
59 | VERIFY( ifstrm.peek() == L'1' ); | |
60 | ||
61 | state1 = ifstrm.rdstate(); | |
62 | ifstrm.ignore(100); | |
63 | VERIFY( ifstrm.gcount() == 100 ); | |
64 | state2 = ifstrm.rdstate(); | |
65 | VERIFY( state1 == state2 ); | |
66 | VERIFY( ifstrm.peek() == L'2' ); | |
67 | ||
68 | state1 = ifstrm.rdstate(); | |
69 | ifstrm.ignore(1000); | |
70 | VERIFY( ifstrm.gcount() == 1000 ); | |
71 | state2 = ifstrm.rdstate(); | |
72 | VERIFY( state1 == state2 ); | |
73 | VERIFY( ifstrm.peek() == L'1' ); | |
74 | ||
75 | state1 = ifstrm.rdstate(); | |
76 | ifstrm.ignore(10000); | |
77 | VERIFY( ifstrm.gcount() == 10000 ); | |
78 | state2 = ifstrm.rdstate(); | |
79 | VERIFY( state1 == state2 ); | |
80 | VERIFY( ifstrm.peek() == L'2' ); | |
81 | ||
82 | state1 = ifstrm.rdstate(); | |
83 | ifstrm.ignore(numeric_limits<streamsize>::max()); | |
84 | VERIFY( ifstrm.gcount() == 5389 ); | |
85 | state2 = ifstrm.rdstate(); | |
86 | VERIFY( state1 != state2 ); | |
87 | VERIFY( state2 == ios_base::eofbit ); | |
88 | } | |
89 | ||
90 | int | |
91 | main() | |
92 | { | |
93 | test01(); | |
94 | return 0; | |
95 | } |