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1 | // { dg-require-fork "" } | |
2 | // { dg-require-mkfifo "" } | |
3 | ||
4 | // 2006-03-22 Paolo Carlini <pcarlini@suse.de> | |
5 | ||
6 | // Copyright (C) 2006-2017 Free Software Foundation, Inc. | |
7 | // | |
8 | // This file is part of the GNU ISO C++ Library. This library is free | |
9 | // software; you can redistribute it and/or modify it under the | |
10 | // terms of the GNU General Public License as published by the | |
11 | // Free Software Foundation; either version 3, or (at your option) | |
12 | // any later version. | |
13 | ||
14 | // This library is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | ||
19 | // You should have received a copy of the GNU General Public License along | |
20 | // with this library; see the file COPYING3. If not see | |
21 | // <http://www.gnu.org/licenses/>. | |
22 | ||
23 | #include <testsuite_hooks.h> | |
24 | #include <fstream> | |
25 | #include <sstream> | |
26 | #include <cstdlib> | |
27 | #include <unistd.h> | |
28 | #include <signal.h> | |
29 | #include <fcntl.h> | |
30 | #include <sys/types.h> | |
31 | #include <sys/stat.h> | |
32 | ||
33 | // libstdc++/26777 | |
34 | bool test01() | |
35 | { | |
36 | using namespace std; | |
37 | using namespace __gnu_test; | |
38 | ||
39 | bool test = true; | |
40 | ||
41 | const char* name = "tmp_fifo6"; | |
42 | ||
43 | signal(SIGPIPE, SIG_IGN); | |
44 | ||
45 | unlink(name); | |
46 | mkfifo(name, S_IRWXU); | |
47 | semaphore s1, s2; | |
48 | ||
49 | int child = fork(); | |
50 | test &= bool( child != -1 ); | |
51 | ||
52 | if (child == 0) | |
53 | { | |
54 | filebuf fbout; | |
55 | fbout.open(name, ios_base::in | ios_base::out); | |
56 | test &= bool( fbout.is_open() ); | |
57 | fbout.sputn("Whatever", 8); | |
58 | fbout.pubsync(); | |
59 | s1.signal(); | |
60 | s2.wait(); | |
61 | fbout.close(); | |
62 | s1.signal(); | |
63 | exit(0); | |
64 | } | |
65 | ||
66 | filebuf fbin; | |
67 | fbin.open(name, ios::in); | |
68 | s1.wait(); | |
69 | ||
70 | fbin.sgetc(); | |
71 | fbin.pubseekoff(0, ios::cur, ios::in); | |
72 | s2.signal(); | |
73 | s1.wait(); | |
74 | ||
75 | ostringstream oss; | |
76 | oss << &fbin; | |
77 | fbin.close(); | |
78 | ||
79 | test &= bool( oss.str() == "Whatever" ); | |
80 | ||
81 | return test; | |
82 | } | |
83 | ||
84 | int main() | |
85 | { | |
86 | return !test01(); | |
87 | } |