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// Derived from libstdc++/12048 by LJR <ljrittle@acm.org> with
// reminder from Petur Runolfsson <peturr02@ru.is>.
// Copyright (C) 2003-2016 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
// <http://www.gnu.org/licenses/>.
// 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-require-fileio "" }
// { dg-do run { xfail *-*-* } }
#include <iostream>
#include <cstdio>
#include <testsuite_hooks.h>
void
test01()
{
VERIFY( std::freopen("cin_unget-1.txt", "r", stdin) );
char c1;
int c2;
char c3;
std::cin.get(c1);
c2 = std::fgetc(stdin);
std::cin.unget();
if (std::cin.good())
{
std::cin.get(c3);
VERIFY( std::cin.good() );
VERIFY( c3 == std::char_traits<char>::to_char_type(c2) );
}
}
int main(void)
{
test01();
return 0;
}
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