libstdc++-v3/testsuite/27_io/objects/char/7.cc

   1 // 2003-04-26 Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the
   7 // terms of the GNU General Public License as published by the
   8 // Free Software Foundation; either version 2, or (at your option)
   9 // any later version.
  10
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 // GNU General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // 27.3 Standard iostream objects
  22
  23 // XXX cygwin does not support mkfifo
  24 // { dg-do run { xfail *-*-cygwin* } }
  25
  26 #include <fstream>
  27 #include <iostream>
  28 #include <unistd.h>
  29 #include <signal.h>
  30 #include <fcntl.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33 #include <testsuite_hooks.h>
  34
  35 // Check that cout.flush() is called when last ios_base::Init is destroyed.
  36 void test07()
  37 {
  38   using namespace std;
  39   bool test __attribute__((unused)) = true;
  40
  41   const char* name = "tmp_fifo4";
  42
  43   signal(SIGPIPE, SIG_IGN);
  44
  45   unlink(name);
  46   mkfifo(name, S_IRWXU);
  47
  48   int child = fork();
  49   VERIFY( child != -1 );
  50
  51   if (child == 0)
  52     {
  53       filebuf fbout;
  54       sleep(1);
  55       fbout.open(name, ios_base::out);
  56       cout.rdbuf(&fbout);
  57       fbout.sputc('a');
  58       sleep(2);
  59       // NB: fbout is *not* destroyed here!
  60       exit(0);
  61     }
  62
  63   filebuf fbin;
  64   fbin.open(name, ios_base::in);
  65   sleep(2);
  66   filebuf::int_type c = fbin.sbumpc();
  67   VERIFY( c != filebuf::traits_type::eof() );
  68   VERIFY( c == filebuf::traits_type::to_int_type('a') );
  69
  70   fbin.close();
  71 }
  72
  73 int
  74 main()
  75 {
  76   test07();
  77   return 0;
  78 }