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// Copyright (C) 2005-2019 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/>.
// { dg-require-fileio "" }
// 27.6.2.4 basic_ostream seek members [lib.ostream.seeks]
// @require@ %-*.tst %-*.txt
// @diff@ %-*.tst %-*.txt
#include <ostream>
#include <istream>
#include <fstream>
#include <cstdlib>
#include <testsuite_hooks.h>
const wchar_t* s = L" lootpack, peanut butter wolf, rob swift, madlib, quasimoto";
const int times = 10;
void write_rewind(std::wiostream& stream)
{
for (int j = 0; j < times; j++)
{
std::streampos begin = stream.tellp();
for (int i = 0; i < times; ++i)
stream << j << L'-' << i << s << L'\n';
stream.seekp(begin);
}
VERIFY( stream.good() );
}
void check_contents(std::wiostream& stream)
{
stream.clear();
stream.seekg(0, std::wios::beg);
int i = 0;
int loop = times * times + 2;
while (i < loop)
{
stream.ignore(80, L'\n');
if (stream.good())
++i;
else
break;
}
VERIFY( i == times );
}
// fstream
// libstdc++/2346
void test02()
{
std::wfstream ofstrm;
ofstrm.open("wistream_seeks-3.txt", std::wios::out);
if (!ofstrm)
std::abort();
write_rewind(ofstrm);
ofstrm.close();
std::wfstream ifstrm;
ifstrm.open("wistream_seeks-3.txt", std::wios::in);
check_contents(ifstrm);
ifstrm.close();
}
int main()
{
test02();
return 0;
}
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