gomp-20050608-branch/libstdc++-v3/testsuite/27_io/objects/char/7.cc

   1 // { dg-require-fork "" }
   2 // { dg-require-mkfifo "" }
   3
   4 // 2003-04-26 Petur Runolfsson  <peturr02@ru.is>
   5
   6 // Copyright (C) 2003, 2005 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 2, or (at your option)
  12 // any later version.
  13
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING.  If not, write to the Free
  21 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  22 // USA.
  23
  24 // 27.3 Standard iostream objects
  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   using namespace __gnu_test;
  40   bool test __attribute__((unused)) = true;
  41
  42   const char* name = "tmp_fifo4";
  43
  44   signal(SIGPIPE, SIG_IGN);
  45
  46   unlink(name);
  47   mkfifo(name, S_IRWXU);
  48   semaphore s1;
  49
  50   int child = fork();
  51   VERIFY( child != -1 );
  52
  53   if (child == 0)
  54     {
  55       filebuf fbout;
  56       fbout.open(name, ios_base::in|ios_base::out);
  57       s1.wait ();
  58       VERIFY ( fbout.is_open() );
  59       cout.rdbuf(&fbout);
  60       fbout.sputc('a');
  61       // NB: fbout is *not* destroyed here!
  62       exit(0);
  63     }
  64
  65   filebuf fbin;
  66   fbin.open(name, ios_base::in);
  67   s1.signal ();
  68   filebuf::int_type c = fbin.sbumpc();
  69   VERIFY( c != filebuf::traits_type::eof() );
  70   VERIFY( c == filebuf::traits_type::to_int_type('a') );
  71
  72   fbin.close();
  73 }
  74
  75 int
  76 main()
  77 {
  78   test07();
  79   return 0;
  80 }