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// Copyright (C) 2017-2019 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 "" }
#include <ext/stdio_filebuf.h>
#include <cstdio>
#include <cerrno>
#include <testsuite_hooks.h>
void
test01()
{
FILE* out = std::fopen("81751.txt", "w");
std::fwrite("Some words.", 1, 10, out);
FILE* in1 = std::fopen("81751.txt", "r");
__gnu_cxx::stdio_filebuf<char> buf1(in1, std::ios::in, BUFSIZ);
int c = buf1.sgetc();
VERIFY( c == std::char_traits<char>::eof() ); // PR libstdc++/81751
std::fflush(out);
FILE* in2 = std::fopen("81751.txt", "r");
__gnu_cxx::stdio_filebuf<char> buf2(in2, std::ios::in, BUFSIZ);
c = buf2.sgetc();
VERIFY( c == 'S' );
buf1.close();
buf2.close();
std::fclose(in1);
std::fclose(in2);
std::fclose(out);
}
int
main()
{
test01();
}
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