libstdc++-v3/testsuite/27_io/objects/wchar_t/12048-2.cc

   1 // Copyright (C) 2003-2013 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 3, 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 COPYING3.  If not see
  16 // <http://www.gnu.org/licenses/>.
  17
  18 #include <iostream>
  19 #include <cstdio>
  20 #include <cwchar>
  21 #include <testsuite_hooks.h>
  22
  23 void
  24 test01()
  25 {
  26   VERIFY( std::freopen("cin_unget-1.txt", "r", stdin) );
  27
  28   wchar_t c1;
  29   std::wint_t c2;
  30   std::wcin.get(c1);
  31   std::wcin.unget();
  32   VERIFY( std::wcin.good() );
  33   c2 = std::fgetwc(stdin);
  34   VERIFY( c2 == std::char_traits<wchar_t>::to_int_type(c1) );
  35 }
  36
  37 int main(void)
  38 {
  39   test01();
  40   return 0;
  41 }