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

   1 // 2003-04-26 Petur Runolfsson  <peturr02@ru.is>
   2
   3 // Copyright (C) 2003, 2005 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 #include <fstream>
  24 #include <iostream>
  25 #include <unistd.h>
  26 #include <signal.h>
  27 #include <fcntl.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <testsuite_hooks.h>
  31
  32 // Check that cout.flush() is called when last ios_base::Init is destroyed.
  33 void test07()
  34 {
  35   using namespace std;
  36   using namespace __gnu_test;
  37   bool test __attribute__((unused)) = true;
  38
  39   const char* name = "tmp_fifo4";
  40
  41   signal(SIGPIPE, SIG_IGN);
  42
  43   unlink(name);
  44   try_mkfifo(name, S_IRWXU);
  45   semaphore s1;
  46
  47   int child = fork();
  48   VERIFY( child != -1 );
  49
  50   if (child == 0)
  51     {
  52       filebuf fbout;
  53       fbout.open(name, ios_base::in|ios_base::out);
  54       s1.wait ();
  55       VERIFY ( fbout.is_open() );
  56       cout.rdbuf(&fbout);
  57       fbout.sputc('a');
  58       // NB: fbout is *not* destroyed here!
  59       exit(0);
  60     }
  61
  62   filebuf fbin;
  63   fbin.open(name, ios_base::in);
  64   s1.signal ();
  65   filebuf::int_type c = fbin.sbumpc();
  66   VERIFY( c != filebuf::traits_type::eof() );
  67   VERIFY( c == filebuf::traits_type::to_int_type('a') );
  68
  69   fbin.close();
  70 }
  71
  72 int
  73 main()
  74 {
  75   test07();
  76   return 0;
  77 }