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23cac885 | 1 | // 1999-10-11 bkoz |
b2dad0e3 | 2 | |
8d59b230 | 3 | // Copyright (C) 1999, 2000, 2001, 2002, 2003 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 | |
8 | // Free Software Foundation; either version 2, or (at your option) | |
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 | |
17 | // with this library; see the file COPYING. If not, write to the Free | |
18 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
19 | // USA. | |
20 | ||
21 | // As a special exception, you may use this file as part of a free software | |
22 | // library without restriction. Specifically, if other files instantiate | |
23 | // templates or use macros or inline functions from this file, or you compile | |
24 | // this file and link it with other files to produce an executable, this | |
25 | // file does not by itself cause the resulting executable to be covered by | |
26 | // the GNU General Public License. This exception does not however | |
27 | // invalidate any other reasons why the executable file might be covered by | |
28 | // the GNU General Public License. | |
29 | ||
23cac885 | 30 | // 27.5.2 template class basic_streambuf |
b2dad0e3 | 31 | |
23cac885 | 32 | #include <fstream> |
f13a69ec | 33 | #include <testsuite_hooks.h> |
b2dad0e3 | 34 | |
23cac885 | 35 | class setpbuf : public std::filebuf |
bcc6a03a | 36 | { |
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37 | char buffer[4]; |
38 | std::string result; | |
39 | ||
40 | public: | |
41 | ||
42 | std::string& | |
43 | get_result() | |
44 | { return result; } | |
45 | ||
46 | setpbuf() | |
47 | { | |
48 | this->open("tmp_1057", std::ios_base::out | std::ios_base::trunc); | |
49 | char foo [32]; | |
50 | setp(foo, foo + 32); | |
51 | setp(buffer, buffer + 4); | |
52 | } | |
bcc6a03a | 53 | |
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54 | ~setpbuf() |
55 | { | |
56 | sync(); | |
57 | close(); | |
58 | } | |
59 | ||
60 | virtual int_type | |
61 | overflow(int_type n) | |
62 | { | |
63 | if (sync() != 0) | |
64 | return traits_type::eof(); | |
65 | ||
66 | result += traits_type::to_char_type(n); | |
67 | ||
68 | return n; | |
69 | } | |
70 | ||
71 | virtual int | |
72 | sync() | |
73 | { | |
74 | result.append(pbase(), pptr()); | |
75 | setp(buffer, buffer + 4); | |
76 | return 0; | |
77 | } | |
78 | }; | |
79 | ||
80 | // libstdc++/1057 | |
81 | void test04() | |
e6705174 | 82 | { |
11f10e6b | 83 | bool test __attribute__((unused)) = true; |
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84 | std::string text = "abcdefghijklmn"; |
85 | ||
86 | // 01 | |
87 | setpbuf sp1; | |
88 | // Here xsputn writes over sp1.result | |
89 | sp1.sputn(text.c_str(), text.length()); | |
90 | ||
91 | // This crashes when result is accessed | |
92 | sp1.pubsync(); | |
93 | VERIFY( sp1.get_result() == text ); | |
94 | ||
95 | // 02 | |
96 | setpbuf sp2; | |
97 | for (std::string::size_type i = 0; i < text.length(); ++i) | |
98 | { | |
99 | // sputc also writes over result | |
100 | sp2.sputc(text[i]); | |
101 | } | |
102 | ||
103 | // Crash here | |
104 | sp2.pubsync(); | |
105 | VERIFY( sp2.get_result() == text ); | |
106 | } | |
b2dad0e3 | 107 | |
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108 | int main() |
109 | { | |
23cac885 | 110 | test04(); |
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111 | return 0; |
112 | } |