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23cac885 | 1 | // 1999-10-11 bkoz |
afb6c265 | 2 | |
748086b7 JJ |
3 | // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2009 |
4 | // Free Software Foundation, Inc. | |
afb6c265 PC |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
748086b7 | 9 | // Free Software Foundation; either version 3, or (at your option) |
afb6c265 PC |
10 | // any later version. |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
748086b7 JJ |
18 | // with this library; see the file COPYING3. If not see |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
afb6c265 | 21 | |
23cac885 | 22 | // 27.5.2 template class basic_streambuf |
afb6c265 | 23 | |
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24 | #include <sstream> |
25 | #include <testsuite_hooks.h> | |
26 | ||
23cac885 | 27 | class setpbuf : public std::stringbuf |
afb6c265 | 28 | { |
23cac885 BK |
29 | char buffer[4]; |
30 | std::string result; | |
afb6c265 | 31 | |
23cac885 | 32 | public: |
afb6c265 | 33 | |
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34 | std::string& |
35 | get_result() | |
36 | { return result; } | |
afb6c265 | 37 | |
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38 | setpbuf() |
39 | { | |
40 | char foo [32]; | |
41 | setp(foo, foo + 32); | |
42 | setp(buffer, buffer + 4); | |
43 | } | |
44 | ||
45 | ~setpbuf() | |
46 | { sync(); } | |
47 | ||
48 | virtual int_type | |
49 | overflow(int_type n) | |
50 | { | |
51 | if (sync() != 0) | |
52 | return traits_type::eof(); | |
53 | ||
54 | result += traits_type::to_char_type(n); | |
55 | ||
56 | return n; | |
57 | } | |
ff5d863f | 58 | |
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59 | virtual int |
60 | sync() | |
ff5d863f | 61 | { |
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62 | result.append(pbase(), pptr()); |
63 | setp(buffer, buffer + 4); | |
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64 | return 0; |
65 | } | |
66 | }; | |
67 | ||
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68 | // libstdc++/1057 |
69 | void test04() | |
ff5d863f | 70 | { |
11f10e6b | 71 | bool test __attribute__((unused)) = true; |
23cac885 | 72 | std::string text = "abcdefghijklmn"; |
ff5d863f | 73 | |
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74 | // 01 |
75 | setpbuf sp1; | |
76 | // Here xsputn writes over sp1.result | |
77 | sp1.sputn(text.c_str(), text.length()); | |
ff5d863f | 78 | |
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79 | // This crashes when result is accessed |
80 | sp1.pubsync(); | |
81 | VERIFY( sp1.get_result() == text ); | |
82 | ||
83 | // 02 | |
84 | setpbuf sp2; | |
85 | for (std::string::size_type i = 0; i < text.length(); ++i) | |
86 | { | |
87 | // sputc also writes over result | |
88 | sp2.sputc(text[i]); | |
89 | } | |
90 | ||
91 | // Crash here | |
92 | sp2.pubsync(); | |
93 | VERIFY( sp2.get_result() == text ); | |
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94 | } |
95 | ||
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96 | int main() |
97 | { | |
23cac885 | 98 | test04(); |
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99 | return 0; |
100 | } |