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// Copyright (C) 2003 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 2, 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 COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// 27.8.1.4 Overridden virtual functions

#include <fstream>

#include <cstdio>

#include <cstring>

#include <testsuite_hooks.h>

// libstdc++/12875

void test01()

{

  using namespace std;

  bool test __attribute__((unused)) = true;

  const char* name = "tmp_setbuf4";

  static char buf[1024];

  FILE* out = fopen(name, "w");

  fputs("Hello, world", out);

  fclose(out);

  filebuf in;

  in.open(name, ios_base::in);

  char str[256];

  streamsize r = in.sgetn(str, 6);

  VERIFY( r == 6 );

  VERIFY( !memcmp(str, "Hello,", 6) );

  in.pubsetbuf(buf, 1024);

  r = in.sgetn(str, 6);

  VERIFY( r == 6 );

  VERIFY( !memcmp(str, " world", 6) );

  in.close();

}

// libstdc++/12875

int main()

{

  test01();

  return 0;

}