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a2febbfb | 1 | // 2001-05-21 Benjamin Kosnik <bkoz@redhat.com> |
2 | ||
f1717362 | 3 | // Copyright (C) 2001-2016 Free Software Foundation, Inc. |
a2febbfb | 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) |
a2febbfb | 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/>. | |
a2febbfb | 19 | |
20 | // 27.8.1.4 Overridden virtual functions | |
21 | ||
b14642ed | 22 | // { dg-require-fileio "" } |
23 | ||
a2febbfb | 24 | #include <fstream> |
25 | #include <testsuite_hooks.h> | |
26 | ||
27 | const char name_08[] = "filebuf_virtuals-8.txt"; // empty file, need to create | |
28 | ||
29 | class OverBuf : public std::filebuf | |
30 | { | |
31 | public: | |
32 | int_type pub_overflow(int_type c = traits_type::eof()) | |
33 | { return std::filebuf::overflow(c); } | |
34 | }; | |
35 | ||
36 | // libstdc++/9988 | |
37 | // filebuf::overflow writes EOF to file | |
38 | void test15() | |
39 | { | |
40 | using namespace std; | |
f8ef786c | 41 | bool test __attribute__((unused)) = true; |
a2febbfb | 42 | |
43 | OverBuf fb; | |
44 | fb.open(name_08, ios_base::out | ios_base::trunc); | |
45 | ||
46 | fb.sputc('a'); | |
47 | fb.pub_overflow('b'); | |
48 | fb.pub_overflow(); | |
49 | fb.sputc('c'); | |
50 | fb.close(); | |
51 | ||
52 | filebuf fbin; | |
53 | fbin.open(name_08, ios_base::in); | |
54 | filebuf::int_type c; | |
55 | c = fbin.sbumpc(); | |
56 | VERIFY( c == 'a' ); | |
57 | c = fbin.sbumpc(); | |
58 | VERIFY( c == 'b' ); | |
59 | c = fbin.sbumpc(); | |
60 | VERIFY( c == 'c' ); | |
61 | c = fbin.sbumpc(); | |
62 | VERIFY( c == filebuf::traits_type::eof() ); | |
63 | fbin.close(); | |
64 | } | |
65 | ||
f8ef786c | 66 | int main() |
a2febbfb | 67 | { |
68 | test15(); | |
69 | return 0; | |
70 | } |