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// 2001-05-21 Benjamin Kosnik <bkoz@redhat.com>
// Copyright (C) 2001-2018 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/>.
// 27.8.1.4 Overridden virtual functions
// { dg-require-fileio "" }
#include <fstream>
#include <testsuite_hooks.h>
const char name_08[] = "filebuf_virtuals-8.txt"; // empty file, need to create
class OverBuf : public std::filebuf
{
public:
int_type pub_overflow(int_type c = traits_type::eof())
{ return std::filebuf::overflow(c); }
};
// libstdc++/9988
// filebuf::overflow writes EOF to file
void test15()
{
using namespace std;
OverBuf fb;
fb.open(name_08, ios_base::out | ios_base::trunc);
fb.sputc('a');
fb.pub_overflow('b');
fb.pub_overflow();
fb.sputc('c');
fb.close();
filebuf fbin;
fbin.open(name_08, ios_base::in);
filebuf::int_type c;
c = fbin.sbumpc();
VERIFY( c == 'a' );
c = fbin.sbumpc();
VERIFY( c == 'b' );
c = fbin.sbumpc();
VERIFY( c == 'c' );
c = fbin.sbumpc();
VERIFY( c == filebuf::traits_type::eof() );
fbin.close();
}
int main()
{
test15();
return 0;
}
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