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c1993c3a | 1 | // 1999-10-11 bkoz |
2 | ||
f1717362 | 3 | // Copyright (C) 1999-2016 Free Software Foundation, Inc. |
c1993c3a | 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 | |
6bc9506f | 8 | // Free Software Foundation; either version 3, or (at your option) |
c1993c3a | 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 | |
6bc9506f | 17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
19 | ||
c1993c3a | 20 | |
21 | // 27.5.2 template class basic_streambuf | |
22 | ||
23 | #include <sstream> | |
24 | #include <testsuite_hooks.h> | |
25 | ||
26 | class setpbuf : public std::wstringbuf | |
27 | { | |
28 | wchar_t buffer[4]; | |
29 | std::wstring result; | |
30 | ||
31 | public: | |
32 | ||
33 | std::wstring& | |
34 | get_result() | |
35 | { return result; } | |
36 | ||
37 | setpbuf() | |
38 | { | |
39 | wchar_t foo [32]; | |
40 | setp(foo, foo + 32); | |
41 | setp(buffer, buffer + 4); | |
42 | } | |
43 | ||
44 | ~setpbuf() | |
45 | { sync(); } | |
46 | ||
47 | virtual int_type | |
48 | overflow(int_type n) | |
49 | { | |
50 | if (sync() != 0) | |
51 | return traits_type::eof(); | |
52 | ||
53 | result += traits_type::to_char_type(n); | |
54 | ||
55 | return n; | |
56 | } | |
57 | ||
58 | virtual int | |
59 | sync() | |
60 | { | |
61 | result.append(pbase(), pptr()); | |
62 | setp(buffer, buffer + 4); | |
63 | return 0; | |
64 | } | |
65 | }; | |
66 | ||
67 | // libstdc++/1057 | |
68 | void test04() | |
69 | { | |
70 | bool test __attribute__((unused)) = true; | |
71 | std::wstring text = L"abcdefghijklmn"; | |
72 | ||
73 | // 01 | |
74 | setpbuf sp1; | |
75 | // Here xsputn writes over sp1.result | |
76 | sp1.sputn(text.c_str(), text.length()); | |
77 | ||
78 | // This crashes when result is accessed | |
79 | sp1.pubsync(); | |
80 | VERIFY( sp1.get_result() == text ); | |
81 | ||
82 | // 02 | |
83 | setpbuf sp2; | |
84 | for (std::wstring::size_type i = 0; i < text.length(); ++i) | |
85 | { | |
86 | // sputc also writes over result | |
87 | sp2.sputc(text[i]); | |
88 | } | |
89 | ||
90 | // Crash here | |
91 | sp2.pubsync(); | |
92 | VERIFY( sp2.get_result() == text ); | |
93 | } | |
94 | ||
95 | int main() | |
96 | { | |
97 | test04(); | |
98 | return 0; | |
99 | } |