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23cac885 | 1 | // 1999-10-11 bkoz |
b2dad0e3 | 2 | |
83ffe9cd | 3 | // Copyright (C) 1999-2023 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/>. | |
19 | ||
b2dad0e3 | 20 | |
23cac885 | 21 | // 27.5.2 template class basic_streambuf |
b2dad0e3 | 22 | |
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23 | #include <cstring> // for memset, memcmp |
24 | #include <streambuf> | |
25 | #include <sstream> | |
b2dad0e3 | 26 | #include <ostream> |
f13a69ec | 27 | #include <testsuite_hooks.h> |
b2dad0e3 | 28 | |
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29 | // libstdc++/9424 |
30 | class Outbuf_2 : public std::streambuf | |
bcc6a03a | 31 | { |
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32 | char buf[1]; |
33 | ||
34 | public: | |
35 | Outbuf_2() | |
36 | { | |
37 | setp(buf, buf + 1); | |
38 | } | |
39 | ||
40 | int_type overflow(int_type c) | |
41 | { | |
42 | int_type eof = traits_type::eof(); | |
43 | ||
44 | if (pptr() < epptr()) | |
45 | { | |
46 | if (traits_type::eq_int_type(c, eof)) | |
47 | return traits_type::not_eof(c); | |
48 | ||
49 | *pptr() = traits_type::to_char_type(c); | |
50 | pbump(1); | |
51 | return c; | |
52 | } | |
53 | ||
54 | return eof; | |
55 | } | |
56 | }; | |
bcc6a03a | 57 | |
23cac885 | 58 | class Inbuf_2 : public std::streambuf |
e6705174 | 59 | { |
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60 | static const char buf[]; |
61 | const char* current; | |
62 | int size; | |
63 | ||
64 | public: | |
65 | Inbuf_2() | |
66 | { | |
67 | current = buf; | |
68 | size = std::strlen(buf); | |
69 | } | |
70 | ||
71 | int_type underflow() | |
72 | { | |
73 | if (current < buf + size) | |
74 | return traits_type::to_int_type(*current); | |
75 | return traits_type::eof(); | |
76 | } | |
77 | ||
78 | int_type uflow() | |
79 | { | |
80 | if (current < buf + size) | |
81 | return traits_type::to_int_type(*current++); | |
82 | return traits_type::eof(); | |
83 | } | |
84 | }; | |
85 | ||
86 | const char Inbuf_2::buf[] = "Atteivlis"; | |
87 | ||
88 | void test12() | |
fd0bf20c | 89 | { |
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90 | Outbuf_2 outbuf2; |
91 | std::ostream os (&outbuf2); | |
92 | Inbuf_2 inbuf2; | |
93 | os << &inbuf2; | |
94 | VERIFY( inbuf2.sgetc() == 't' ); | |
95 | VERIFY( os.good() ); | |
96 | } | |
b2dad0e3 | 97 | |
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98 | int main() |
99 | { | |
23cac885 | 100 | test12(); |
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101 | return 0; |
102 | } |