libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/4879.cc

   1 // Copyright (C) 2001, 2002, 2003 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 // XXX cygwin does not support mkfifo
  27 // { dg-do run { xfail *-*-cygwin* } }
  28
  29 #include <fstream>
  30 #include <iostream>
  31 #include <unistd.h>
  32 #include <signal.h>
  33 #include <fcntl.h>
  34 #include <sys/types.h>
  35 #include <sys/stat.h>
  36 #include <testsuite_hooks.h>
  37
  38 // libstdc++/2913, libstdc++/4879
  39 // John Fardo  <jfardo@laurelnetworks.com>, Brad Garcia <garsh@attbi.com>
  40 void
  41 test_04()
  42 {
  43   bool test __attribute__((unused)) = true;
  44   const char* name = "tmp_fifo1";
  45   signal(SIGPIPE, SIG_IGN);
  46
  47   unlink(name);
  48   if (0 != mkfifo(name, S_IRWXU))
  49     {
  50       std::cerr << "failed to create fifo" << std::endl;
  51       exit(-1);
  52     }
  53
  54   int fval = fork();
  55   if (fval == -1)
  56     {
  57       std::cerr << "failed to fork" << std::endl;
  58       unlink(name);
  59       exit(-1);
  60     }
  61   else if (fval == 0)
  62     {
  63       std::ifstream ifs(name);
  64       sleep(1);
  65       ifs.close();
  66       exit(0);
  67     }
  68
  69   std::ofstream ofs(name);
  70   sleep(2);
  71   ofs.put('t');
  72
  73   /*
  74    * ISO/IED 14882:1998(E) 27.8.1.10.4
  75    *
  76    * void close();
  77    *
  78    * Effects:  Calls rdbuf()->close() and, if that function fails
  79    * (returns a null pointer), calls setstate(failbit)...
  80    */
  81   ofs.close();
  82   if (!(ofs.rdstate() & std::ios::failbit))
  83     {
  84       test = false;
  85       VERIFY( test );
  86       unlink(name);
  87       exit(-1);
  88     }
  89
  90   unlink(name);
  91 }
  92
  93 int
  94 main()
  95 {
  96   test_04();
  97   return 0;
  98 }
  99
 100