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- // Copyright (C) 2017-2022 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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