libstdc++-v3/testsuite/27_io/objects/wchar_t/5.cc

   1 // { dg-options "-D_GLIBCXX_ASSERT" { target *-*-* } }
   2 // 2003-05-01 Petur Runolfsson  <peturr02@ru.is>
   3
   4 // Copyright (C) 2003 Free Software Foundation
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 // USA.
  21
  22 // 27.3 Standard iostream objects
  23
  24 // Check that standard streams can be used from constructors and
  25 // destructors of static objects, provided that an instance of
  26 // ios_base::Init has been constructed.
  27
  28 void init_standard_streams();
  29 int use_standard_streams();
  30
  31 struct Strange
  32 {
  33   int i;
  34
  35   Strange()
  36   {
  37     init_standard_streams();
  38     i = use_standard_streams();
  39   }
  40
  41   ~Strange()
  42   {
  43     use_standard_streams();
  44     init_standard_streams();
  45   }
  46 };
  47
  48 static Strange static_ob;
  49
  50 #include <testsuite_hooks.h>
  51 #include <iostream>
  52
  53 void init_standard_streams()
  54 {
  55   std::ios_base::Init init;
  56 }
  57
  58 int use_standard_streams()
  59 {
  60   std::wcout << L"Hello, world!" << std::endl;
  61   std::wcerr << L"World, hello!" << std::endl;
  62
  63   int ret = std::ios_base::xalloc();
  64   std::wcin.iword(ret) = ret + 1;
  65   std::wcout.iword(ret) = ret + 2;
  66   std::wcerr.iword(ret) = ret + 3;
  67   std::wclog.iword(ret) = ret + 4;
  68   return ret;
  69 }
  70
  71 void test05()
  72 {
  73   bool test __attribute__((unused)) = true;
  74   int i = static_ob.i;
  75
  76   VERIFY( std::wcin.iword(i) == i + 1 );
  77   VERIFY( std::wcout.iword(i) == i + 2 );
  78   VERIFY( std::wcerr.iword(i) == i + 3 );
  79   VERIFY( std::wclog.iword(i) == i + 4 );
  80 }
  81
  82 int main()
  83 {
  84   test05();
  85   return 0;
  86 }