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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 <streambuf> |
f13a69ec | 33 | #include <testsuite_hooks.h> |
b2dad0e3 | 34 | |
23cac885 | 35 | class setpbuf : public std::streambuf |
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 | char foo [32]; | |
49 | setp(foo, foo + 32); | |
50 | setp(buffer, buffer + 4); | |
51 | } | |
bcc6a03a | 52 | |
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53 | ~setpbuf() |
54 | { sync(); } | |
55 | ||
56 | virtual int_type | |
57 | overflow(int_type n) | |
58 | { | |
59 | if (sync() != 0) | |
60 | return traits_type::eof(); | |
61 | ||
62 | result += traits_type::to_char_type(n); | |
63 | ||
64 | return n; | |
65 | } | |
66 | ||
67 | virtual int | |
68 | sync() | |
69 | { | |
70 | result.append(pbase(), pptr()); | |
71 | setp(buffer, buffer + 4); | |
72 | return 0; | |
73 | } | |
74 | }; | |
75 | ||
76 | // libstdc++/1057 | |
77 | void test04() | |
e6705174 | 78 | { |
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79 | bool test = true; |
80 | std::string text = "abcdefghijklmn"; | |
81 | ||
82 | // 01 | |
83 | setpbuf sp1; | |
84 | // Here xsputn writes over sp1.result | |
85 | sp1.sputn(text.c_str(), text.length()); | |
86 | ||
87 | // This crashes when result is accessed | |
88 | sp1.pubsync(); | |
89 | VERIFY( sp1.get_result() == text ); | |
90 | ||
91 | // 02 | |
92 | setpbuf sp2; | |
93 | for (std::string::size_type i = 0; i < text.length(); ++i) | |
94 | { | |
95 | // sputc also writes over result | |
96 | sp2.sputc(text[i]); | |
97 | } | |
98 | ||
99 | // Crash here | |
100 | sp2.pubsync(); | |
101 | VERIFY( sp2.get_result() == text ); | |
102 | } | |
b2dad0e3 | 103 | |
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104 | int main() |
105 | { | |
23cac885 | 106 | test04(); |
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107 | return 0; |
108 | } |