libstdc++-v3/testsuite/27_io/basic_filebuf/close/char/9964.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 <unistd.h>
  31 #include <signal.h>
  32 #include <fcntl.h>
  33 #include <sys/types.h>
  34 #include <sys/stat.h>
  35 #include <testsuite_hooks.h>
  36
  37 // libstdc++/9964
  38 void test_07()
  39 {
  40   using namespace std;
  41   bool test __attribute__((unused)) = true;
  42
  43   const char* name = "tmp_fifo3";
  44
  45   signal(SIGPIPE, SIG_IGN);
  46
  47   unlink(name);
  48   mkfifo(name, S_IRWXU);
  49
  50   int child = fork();
  51   VERIFY( child != -1 );
  52
  53   if (child == 0)
  54     {
  55       filebuf fbin;
  56       fbin.open(name, ios_base::in);
  57       sleep(2);
  58       fbin.close();
  59       exit(0);
  60     }
  61
  62   filebuf fb;
  63   sleep(1);
  64   filebuf* ret = fb.open(name, ios_base::out | ios_base::trunc);
  65   VERIFY( ret != NULL );
  66   VERIFY( fb.is_open() );
  67
  68   sleep(3);
  69   fb.sputc('a');
  70
  71   ret = fb.close();
  72   VERIFY( ret == NULL );
  73   VERIFY( !fb.is_open() );
  74 }
  75
  76 int
  77 main()
  78 {
  79   test_07();
  80   return 0;
  81 }