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1 | // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> |
2 | ||
7adcbafe | 3 | // Copyright (C) 2001-2022 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 | ||
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22 | // { dg-require-fileio "" } |
23 | ||
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24 | #include <fstream> |
25 | #include <testsuite_hooks.h> | |
26 | #include <testsuite_io.h> | |
27 | ||
28 | // @require@ %-*.tst %-*.txt | |
29 | // @diff@ %-*.tst %*.txt | |
30 | ||
31 | const char name_01[] = "sgetc.txt"; // file with data in it | |
32 | ||
33 | // Test overloaded virtual functions. | |
34 | void test01() | |
35 | { | |
36 | using namespace std; | |
aecf642c | 37 | using namespace __gnu_test; |
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38 | typedef std::filebuf::int_type int_type; |
39 | typedef filebuf::traits_type traits_type; | |
40 | ||
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41 | int_type c1, c2, c3; |
42 | ||
43 | // int_type sungetc() | |
44 | // if in_cur not avail, return pbackfail(), else decrement and | |
45 | // return to_int_type(*gptr()) | |
46 | ||
47 | // in | |
48 | { | |
49 | constraint_filebuf fb_01; | |
50 | fb_01.pubsetbuf(0, 0); | |
51 | fb_01.open(name_01, ios::in); | |
52 | VERIFY( fb_01.unbuffered() ); | |
53 | c1 = fb_01.sbumpc(); | |
54 | VERIFY( c1 == '/' ); | |
55 | c2 = fb_01.sungetc(); | |
56 | VERIFY( c2 == c1 ); | |
57 | c3 = fb_01.sgetc(); | |
58 | VERIFY( c3 == c2 ); | |
59 | fb_01.pubseekoff(2, ios_base::beg, ios_base::in); | |
60 | c1 = fb_01.sgetc(); | |
61 | VERIFY( c1 == ' ' ); | |
62 | c2 = fb_01.sungetc(); | |
63 | VERIFY( c2 == traits_type::not_eof(traits_type::eof()) ); | |
64 | VERIFY( fb_01.unbuffered() ); | |
65 | } | |
66 | } | |
67 | ||
11f10e6b | 68 | int main() |
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69 | { |
70 | test01(); | |
71 | return 0; | |
72 | } |