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7f4a0683 | 1 | // { dg-require-fork "" } |
2 | // { dg-require-mkfifo "" } | |
3 | ||
4 | // 2006-03-22 Paolo Carlini <pcarlini@suse.de> | |
5 | ||
f1717362 | 6 | // Copyright (C) 2006-2016 Free Software Foundation, Inc. |
7f4a0683 | 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 | |
6bc9506f | 11 | // Free Software Foundation; either version 3, or (at your option) |
7f4a0683 | 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 | |
6bc9506f | 20 | // with this library; see the file COPYING3. If not see |
21 | // <http://www.gnu.org/licenses/>. | |
7f4a0683 | 22 | |
dfd22e84 | 23 | // No asserts, avoid leaking the semaphores if a VERIFY fails. |
24 | #undef _GLIBCXX_ASSERT | |
25 | ||
7f4a0683 | 26 | #include <testsuite_hooks.h> |
27 | #include <fstream> | |
28 | #include <sstream> | |
ceb6f07a | 29 | #include <cstdlib> |
7f4a0683 | 30 | #include <unistd.h> |
31 | #include <signal.h> | |
32 | #include <fcntl.h> | |
33 | #include <sys/types.h> | |
34 | #include <sys/stat.h> | |
35 | ||
36 | // libstdc++/26777 | |
dfd22e84 | 37 | bool test01() |
7f4a0683 | 38 | { |
39 | using namespace std; | |
40 | using namespace __gnu_test; | |
41 | ||
42 | bool test __attribute__((unused)) = true; | |
43 | ||
44 | const char* name = "tmp_fifo6"; | |
45 | ||
46 | signal(SIGPIPE, SIG_IGN); | |
47 | ||
48 | unlink(name); | |
49 | mkfifo(name, S_IRWXU); | |
50 | semaphore s1, s2; | |
51 | ||
52 | int child = fork(); | |
53 | VERIFY( child != -1 ); | |
54 | ||
55 | if (child == 0) | |
56 | { | |
57 | filebuf fbout; | |
58 | fbout.open(name, ios_base::in | ios_base::out); | |
59 | VERIFY( fbout.is_open() ); | |
60 | fbout.sputn("Whatever", 8); | |
61 | fbout.pubsync(); | |
62 | s1.signal(); | |
63 | s2.wait(); | |
64 | fbout.close(); | |
65 | s1.signal(); | |
66 | exit(0); | |
67 | } | |
68 | ||
69 | filebuf fbin; | |
70 | fbin.open(name, ios::in); | |
71 | s1.wait(); | |
72 | ||
73 | fbin.sgetc(); | |
74 | fbin.pubseekoff(0, ios::cur, ios::in); | |
75 | s2.signal(); | |
76 | s1.wait(); | |
77 | ||
78 | ostringstream oss; | |
79 | oss << &fbin; | |
80 | fbin.close(); | |
81 | ||
82 | VERIFY( oss.str() == "Whatever" ); | |
dfd22e84 | 83 | |
84 | return test; | |
7f4a0683 | 85 | } |
86 | ||
87 | int main() | |
88 | { | |
dfd22e84 | 89 | return !test01(); |
7f4a0683 | 90 | } |