1// { dg-require-fork "" }
2// { dg-require-mkfifo "" }
3
4// Copyright (C) 2001-2015 Free Software Foundation, Inc.
5//
6// This file is part of the GNU ISO C++ Library.  This library is free
7// software; you can redistribute it and/or modify it under the
8// terms of the GNU General Public License as published by the
9// Free Software Foundation; either version 3, or (at your option)
10// any later version.
11
12// This library is distributed in the hope that it will be useful,
13// but WITHOUT ANY WARRANTY; without even the implied warranty of
14// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15// GNU General Public License for more details.
16
17// You should have received a copy of the GNU General Public License along
18// with this library; see the file COPYING3.  If not see
19// <http://www.gnu.org/licenses/>.
20
21// 27.8.1.3 filebuf member functions
22// @require@ %-*.tst %-*.txt
23// @diff@ %-*.tst %-*.txt
24
25// various tests for filebuf::open() and filebuf::close() including
26// the non-portable functionality in the libstdc++-v3 IO library
27
28#include <fstream>
29#include <iostream>
30#include <cstdlib>
31#include <unistd.h>
32#include <signal.h>
33#include <fcntl.h>
34#include <sys/types.h>
35#include <sys/stat.h>
36
37// No asserts, avoid leaking the semaphores if a VERIFY fails.
38#undef _GLIBCXX_ASSERT
39
40#include <testsuite_hooks.h>
41
42// libstdc++/2913, libstdc++/4879
43// John Fardo  <jfardo@laurelnetworks.com>, Brad Garcia <garsh@attbi.com>
44bool
45test_04()
46{
47  using namespace __gnu_test;
48
49  bool test __attribute__((unused)) = true;
50  const char* name = "tmp_fifo1";
51  semaphore s1, s2;
52
53  signal(SIGPIPE, SIG_IGN);
54
55  unlink(name);
56  if (0 != mkfifo(name, S_IRWXU))
57    {
58      std::cerr << "failed to create fifo" << std::endl;
59      exit(-1);
60    }
61
62  int fval = fork();
63  if (fval == -1)
64    {
65      std::cerr << "failed to fork" << std::endl;
66      unlink(name);
67      return false;
68    }
69  else if (fval == 0)
70    {
71      std::ifstream ifs(name);
72      s1.wait();
73      ifs.close();
74      s2.signal();
75      exit(0);
76    }
77
78  std::ofstream ofs(name);
79  s1.signal();
80  s2.wait();
81  ofs.put('t');
82
83  /*
84   * ISO/IED 14882:1998(E) 27.8.1.10.4
85   *
86   * void close();
87   *
88   * Effects:  Calls rdbuf()->close() and, if that function fails
89   * (returns a null pointer), calls setstate(failbit)...
90   */
91  ofs.close();
92  if (!(ofs.rdstate() & std::ios::failbit))
93    {
94      test = false;
95      VERIFY( test );
96    }
97
98  unlink(name);
99
100  return test;
101}
102
103int
104main()
105{
106  return !test_04();
107}
108