// Copyright (C) 2003-2014 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// .
// DR 49 states that cin.rdbuf()->sbumpc() and fgetc(stdin) should be
// equivalent and interchangable. Currently however, cin.rdbuf()->sungetc()
// only returns characters that were read with cin.rdbuf()->sbumpc()
// { dg-do run { xfail *-*-* } }
#include
#include
#include
#include
void
test01()
{
VERIFY( std::freopen("cin_unget-1.txt", "r", stdin) );
wchar_t c1;
std::wint_t c2;
wchar_t c3;
std::wcin.get(c1);
c2 = std::fgetwc(stdin);
std::wcin.unget();
if (std::wcin.good())
{
std::wcin.get(c3);
VERIFY( std::wcin.good() );
VERIFY( c3 == std::char_traits::to_char_type(c2) );
}
}
int main(void)
{
test01();
return 0;
}