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// 2004-08-12  Paolo Carlini  <pcarlini@suse.de>
 
// Copyright (C) 2004 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.
 
// 27.7.1.3 Overridden virtual functions
 
#include <sstream>
#include <testsuite_hooks.h>
 
// libstdc++/16956
void test01()
{
  bool test __attribute__((unused)) = true;
  using namespace std;
 
  typedef wstringbuf::int_type int_type;
  typedef wstringbuf::traits_type traits_type;
  typedef wstringbuf::pos_type pos_type;
  typedef wstringbuf::off_type off_type;
 
  wstringbuf strb_01(L"lara's place", ios_base::in);
  pos_type pt_1 = strb_01.pubseekoff(5, ios_base::cur, ios_base::in);
  int_type c1 = strb_01.sgetc();
  VERIFY( c1 != traits_type::eof() );
  pos_type pt_2 = strb_01.pubseekoff(2, ios_base::cur, ios_base::in);
  pos_type pt_3 = strb_01.pubseekpos(pt_1, ios_base::in);
  int_type c2 = strb_01.sbumpc();
  VERIFY( off_type(pt_3) == off_type(pt_2) - 2 );
  VERIFY( c2 == c1 );
 
  wstringbuf strb_02(L"-", ios_base::out);
  pos_type pt_4 = strb_02.pubseekoff(0, ios_base::cur, ios_base::out);
  strb_02.sputn(L"red", 3);
  pos_type pt_5 = strb_02.pubseekoff(-3, ios_base::cur, ios_base::out);
  strb_02.pubseekpos(pt_5, ios_base::out);
  VERIFY( off_type(pt_5) == off_type(pt_4) );
  strb_02.sputn(L"blu", 3);
  VERIFY( strb_02.str() == L"blu" );
}
 
int main()
{
  test01();
  return 0;
}