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// Copyright (C) 2003-2019 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 <locale>
#include <fstream>
#include <testsuite_hooks.h>
#include <testsuite_character.h>
// libstdc++/12790
void test01()
{
using namespace std;
using __gnu_test::pod_uchar;
typedef basic_filebuf<pod_uchar>::traits_type traits_type;
const char* name = "tmp_seekpos_12790";
locale loc(locale::classic(),
new codecvt<traits_type::char_type, char,
traits_type::state_type>);
basic_filebuf<pod_uchar> fb;
fb.pubimbue(loc);
fb.open(name, ios_base::in | ios_base::out | ios_base::trunc);
fb.sputc(pod_uchar::from<char>('b'));
fb.sputc(pod_uchar::from<char>(0xff));
fb.sputc(pod_uchar::from<char>('c'));
fb.sputc(pod_uchar::from<char>(0xff));
fb.pubseekoff(0, ios_base::beg);
fb.sbumpc();
fb.sbumpc();
traits_type::pos_type pos = fb.pubseekoff(0, ios_base::cur);
fb.sbumpc();
fb.sbumpc();
// Check that seekoff sets the current state for output
fb.pubseekpos(pos);
fb.sputc(pod_uchar::from<char>('a'));
fb.sputc(pod_uchar::from<char>(0));
fb.sputc(pod_uchar::from<char>(0));
fb.sputc(pod_uchar::from<char>(0));
fb.sputc(pod_uchar::from<char>(0));
fb.pubseekpos(pos);
traits_type::int_type c = fb.sbumpc();
VERIFY( c != traits_type::eof() );
VERIFY( traits_type::eq(traits_type::to_char_type(c),
pod_uchar::from<char>('a')) );
fb.close();
}
int main()
{
test01();
return 0;
}
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