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23cac885 | 1 | // 2001-06-05 Benjamin Kosnik <bkoz@redhat.com> |
afb6c265 | 2 | |
99dee823 | 3 | // Copyright (C) 2001-2021 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/>. | |
afb6c265 | 19 | |
afb6c265 | 20 | |
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21 | #include <fstream> |
22 | #include <iostream> | |
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23 | #include <testsuite_hooks.h> |
24 | ||
23cac885 | 25 | class gnu_filebuf: public std::filebuf |
ff5d863f | 26 | { |
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27 | int i; |
28 | public: | |
29 | gnu_filebuf(int j = 1): i(j) { } | |
30 | ~gnu_filebuf() { --i; } | |
31 | int get_i() { return i;} | |
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32 | }; |
33 | ||
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34 | const int initial = 4; |
35 | gnu_filebuf buf(initial); | |
36 | ||
37 | // libstdc++/3045, in a vague way. | |
38 | void test01() | |
ff5d863f | 39 | { |
23cac885 | 40 | int k1; |
ff5d863f | 41 | |
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42 | // 1 normal |
43 | k1 = buf.get_i(); | |
44 | VERIFY( k1 == initial ); | |
45 | { | |
46 | std::cout.rdbuf(&buf); | |
47 | } | |
48 | k1 = buf.get_i(); | |
49 | VERIFY( k1 == initial ); | |
ff5d863f | 50 | |
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51 | // 2 syncd off |
52 | k1 = buf.get_i(); | |
53 | VERIFY( k1 == initial ); | |
54 | { | |
55 | std::cout.rdbuf(&buf); | |
56 | std::ios_base::sync_with_stdio(false); // make sure doesn't clobber buf | |
57 | } | |
58 | k1 = buf.get_i(); | |
59 | VERIFY( k1 == initial ); | |
ff5d863f | 60 | |
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61 | // 3 callling init |
62 | k1 = buf.get_i(); | |
63 | VERIFY( k1 == initial ); | |
64 | { | |
65 | std::cout.rdbuf(&buf); | |
66 | std::ios_base::Init make_sure_initialized; | |
67 | } | |
68 | k1 = buf.get_i(); | |
69 | VERIFY( k1 == initial ); | |
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70 | } |
71 | ||
23cac885 | 72 | int main() |
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73 | { |
74 | test01(); | |
75 | return 0; | |
76 | } |