libstdc++-v3/testsuite/27_io/basic_filebuf/imbue/char/13171-2.cc

   1 // Copyright (C) 2003, 2005 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 // 27.8.1.4 Overridden virtual functions
  20
  21 #include <fstream>
  22 #include <locale>
  23
  24 #include <sys/types.h>
  25 #include <sys/stat.h>
  26
  27 #include <testsuite_hooks.h>
  28
  29 // libstdc++/13171
  30 void test01()
  31 {
  32   bool test __attribute__((unused)) = true;
  33   using namespace std;
  34   using namespace __gnu_test;
  35
  36   locale loc_fr(__gnu_test::try_named_locale("fr_FR"));
  37   locale loc_en(__gnu_test::try_named_locale("en_US"));
  38
  39   const char* name = "tmp_fifo_13171-2";
  40   unlink(name);
  41   try_mkfifo(name, S_IRWXU);
  42   semaphore s1, s2;
  43
  44   int child = fork();
  45   if (child == 0)
  46     {
  47       filebuf fb;
  48       fb.open(name, ios_base::out);
  49       fb.sputc('S');
  50       fb.pubsync();
  51       s1.signal ();
  52       s2.wait ();
  53       fb.close();
  54       exit(0);
  55     }
  56
  57   filebuf fb;
  58   fb.pubimbue(loc_fr);
  59   fb.open(name, ios_base::in);
  60   s1.wait ();
  61   VERIFY( fb.is_open() );
  62   fb.pubimbue(loc_en);
  63   filebuf::int_type c = fb.sgetc();
  64   fb.close();
  65   VERIFY( c == 'S' );
  66   s2.signal ();
  67 }
  68
  69 int main()
  70 {
  71   test01();
  72   return 0;
  73 }