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fbd26352 | 1 | // Copyright (C) 2003-2019 Free Software Foundation, Inc. |
a80bbda1 | 2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6bc9506f | 6 | // Free Software Foundation; either version 3, or (at your option) |
a80bbda1 | 7 | // any later version. |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
6bc9506f | 15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
a80bbda1 | 17 | |
18 | // 27.8.1.4 Overridden virtual functions | |
19 | ||
b14642ed | 20 | // { dg-require-fileio "" } |
21 | ||
a80bbda1 | 22 | #include <fstream> |
23 | #include <cstdio> | |
24 | #include <cstring> | |
25 | #include <testsuite_hooks.h> | |
26 | ||
27 | // libstdc++/12875 | |
28 | void test01() | |
29 | { | |
30 | using namespace std; | |
a80bbda1 | 31 | |
32 | const char* name = "tmp_setbuf4"; | |
33 | static char buf[1024]; | |
34 | ||
35 | FILE* out = fopen(name, "w"); | |
36 | fputs("Hello, world", out); | |
37 | fclose(out); | |
38 | ||
39 | filebuf in; | |
40 | in.open(name, ios_base::in); | |
41 | char str[256]; | |
42 | streamsize r = in.sgetn(str, 6); | |
43 | VERIFY( r == 6 ); | |
44 | VERIFY( !memcmp(str, "Hello,", 6) ); | |
45 | in.pubsetbuf(buf, 1024); | |
46 | r = in.sgetn(str, 6); | |
47 | VERIFY( r == 6 ); | |
48 | VERIFY( !memcmp(str, " world", 6) ); | |
49 | in.close(); | |
50 | } | |
51 | ||
52 | // libstdc++/12875 | |
53 | int main() | |
54 | { | |
55 | test01(); | |
56 | return 0; | |
57 | } |