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) 1999-2022 Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License along
  19 // with this library; see the file COPYING3.  If not see
  20 // <http://www.gnu.org/licenses/>.
  21
  22 // 27.4.2.4 ios_base static members
  23 // @require@ %-*.tst
  24 // @diff@ %-*.tst %-*.txt
  25
  26 #include <cstdio>
  27 #include <sstream>
  28 #include <iostream>
  29 #include <testsuite_hooks.h>
  30
  31 // N.B. Once we have called sync_with_stdio(false), we can never go back.
  32
  33 void
  34 test01()
  35 {
  36   std::ios_base::sync_with_stdio();
  37   VERIFY( std::freopen("ios_base_members_static-1.txt", "w", stderr) );
  38
  39   for (int i = 0; i < 2; i++)
  40     {
  41       std::fprintf(stderr, "1");
  42       std::cerr << "2";
  43       std::putc('3', stderr);
  44       std::cerr << '4';
  45       std::fputs("5", stderr);
  46       std::cerr << 6;
  47       std::putc('7', stderr);
  48       std::cerr << 8 << '9';
  49       std::fprintf(stderr, "0\n");
  50     }
  51 }
  52
  53 int main(void)
  54 {
  55   test01();
  56   return 0;
  57 }