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// 2000-09-11 Benjamin Kosnik <bkoz@redhat.com>
 
// Copyright (C) 2000, 2001, 2002, 2003 Free Software Foundation
//
// 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.
 
// 22.1.1.4 locale operators [lib.locale.operators]
 
#include <cwchar> // for mbstate_t
#include <locale>
#include <testsuite_hooks.h>
 
// bool operator()(const string_type&, const string_type&) const
long gnu_count;
 
class gnu_collate: public std::collate<char>
{ 
protected:
  virtual int
  do_compare(const char*, const char*, const char*, const char*) const
  { ++gnu_count; return 0; }
}; 
 
void test02()
{
  using namespace std;
  bool test __attribute__((unused)) = true;
 
  // Sanity check.
  locale loc_c = locale::classic();
  string s01("land of ");
  string s02("land of look behind");
  VERIFY( !loc_c(s01, s01) );
  VERIFY( loc_c(s01, s02) );
 
  // Derivation, MF check.
  locale loc_gnu(loc_c, new gnu_collate);
  gnu_count = 0;
  loc_gnu(s01, s02);
  VERIFY( gnu_count == 1 );
}
 
int main ()
{
  test02();
  return 0;
}