libstdc++-v3/testsuite/27_io/basic_filebuf/open/char/9507.cc

   1 // Copyright (C) 2001, 2002, 2003, 2005 Free Software Foundation, Inc.
   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
   6 // Free Software Foundation; either version 2, or (at your option)
   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
  15 // with this library; see the file COPYING.  If not, write to the Free
  16 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  17 // USA.
  18
  19 // 27.8.1.3 filebuf member functions
  20 // @require@ %-*.tst %-*.txt
  21 // @diff@ %-*.tst %-*.txt
  22
  23 // various tests for filebuf::open() and filebuf::close() including
  24 // the non-portable functionality in the libstdc++-v3 IO library
  25
  26 #include <fstream>
  27 #include <unistd.h>
  28 #include <signal.h>
  29 #include <fcntl.h>
  30 #include <sys/types.h>
  31 #include <sys/stat.h>
  32 #include <testsuite_hooks.h>
  33
  34 // libstdc++/9507
  35 void test_06()
  36 {
  37   using namespace __gnu_test;
  38   bool test __attribute__((unused)) = true;
  39   const char* name = "tmp_fifo2";
  40   semaphore s1, s2;
  41
  42   signal(SIGPIPE, SIG_IGN);
  43
  44   unlink(name);
  45   try_mkfifo(name, S_IRWXU);
  46
  47   if (!fork())
  48     {
  49       std::filebuf fbuf;
  50       fbuf.open(name, std::ios_base::in);
  51       fbuf.sgetc();
  52       s1.signal ();
  53       fbuf.close();
  54       s2.wait ();
  55       exit(0);
  56     }
  57
  58   std::filebuf fbuf;
  59   std::filebuf* r = fbuf.open(name,
  60                               std::ios_base::in
  61                               | std::ios_base::out
  62                               | std::ios_base::ate);
  63   s1.wait ();
  64   VERIFY( !fbuf.is_open() );
  65   VERIFY( r == NULL );
  66   s2.signal ();
  67 }
  68
  69 int
  70 main()
  71 {
  72   test_06();
  73   return 0;
  74 }
  75
  76