58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
// Derived from libstdc++/12048 by LJR <ljrittle@acm.org> with
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// reminder from Petur Runolfsson <peturr02@ru.is>.
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// Copyright (C) 2003 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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// USA.
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// DR 49 states that cin.rdbuf()->sbumpc() and fgetc(stdin) should be
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// equivalent and interchangable. Currently however, cin.rdbuf()->sungetc()
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// only returns characters that were read with cin.rdbuf()->sbumpc()
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// { dg-require-fileio "" }
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// { dg-do run { xfail *-*-* } }
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#include <iostream>
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#include <cstdio>
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#include <testsuite_hooks.h>
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void
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test01()
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{
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std::freopen("cin_unget-1.txt", "r", stdin);
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char c1;
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int c2;
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char c3;
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std::cin.get(c1);
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c2 = std::fgetc(stdin);
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std::cin.unget();
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if (std::cin.good())
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{
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std::cin.get(c3);
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VERIFY( std::cin.good() );
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VERIFY( c3 == std::char_traits<char>::to_char_type(c2) );
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}
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}
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int main(void)
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{
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test01();
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return 0;
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}
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