libstdc++-v3/testsuite/27_io/ios_base/sync_with_stdio/1.cc

   1 // 1999-05-21 bkoz
   2 // 2000-05-21 Benjamin Kosnik  <bkoz@redhat.com>
   3 // 2001-01-17 Loren J. Rittle  <ljrittle@acm.org>
   4
   5 // Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
   6 // Free Software Foundation
   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 // 27.4.2.4 ios_base static members
  25 // @require@ %-*.tst
  26 // @diff@ %-*.tst %-*.txt
  27
  28 // This test fails on platforms using a wrapper, because this test
  29 // redirects stdout to a file and so the exit status printed by the
  30 // wrapper is not visibile to DejaGNU.  DejaGNU then assumes that the
  31 // test exited with a non-zero exit status.
  32 // { dg-do run { xfail { ! unwrapped } } }
  33
  34 #include <cstdio>
  35 #include <sstream>
  36 #include <iostream>
  37 #include <testsuite_hooks.h>
  38
  39 // N.B. Once we have called sync_with_stdio(false), we can never go back.
  40
  41 void
  42 test01()
  43 {
  44   std::ios_base::sync_with_stdio();
  45   std::freopen("ios_base_members_static-1.txt", "w", stderr);
  46
  47   for (int i = 0; i < 2; i++)
  48     {
  49       std::fprintf(stderr, "1");
  50       std::cerr << "2";
  51       std::putc('3', stderr);
  52       std::cerr << '4';
  53       std::fputs("5", stderr);
  54       std::cerr << 6;
  55       std::putc('7', stderr);
  56       std::cerr << 8 << '9';
  57       std::fprintf(stderr, "0\n");
  58     }
  59 }
  60
  61 int main(void)
  62 {
  63   test01();
  64   return 0;
  65 }