Subversion Repositories scarts

// 2003-07-06  Benjamin Kosnik  <bkoz@redhat.com>

// 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.

#include <locale>

#include <sstream>

#include <ostream>

#include <testsuite_hooks.h>

class numpunct_checked : public std::numpunct<char>

{

  typedef std::numpunct<char> base;

public:

  explicit

  numpunct_checked(std::size_t refs = 0): base(refs) { }

  string_type

  base_truename() const

  { return base::do_truename(); }

protected:

  virtual string_type

  do_truename() const

  { return base::do_truename() + "st"; }

};

// Thwart locale caching strategies that incorrectly overwrite base

// class data.

void test01()

{

  using namespace std;

  bool test __attribute__((unused)) = true;

  const string  basestr("true");

  const string  derivedstr("truest");

  const locale  loc(locale::classic(), new numpunct_checked);

  stringbuf     sbuf;

  ostream       os(&sbuf);

  os.setf(ios_base::boolalpha);

  // Pre-cache sanity check.

  const numpunct<char>& np = use_facet<numpunct<char> >(loc);

  VERIFY( np.truename() == derivedstr );

  // Cache.

  os.imbue(loc);

  os << true;

  VERIFY( sbuf.str() == derivedstr );

  // Post-cache sanity check, make sure that base class is still fine.

  VERIFY( np.truename() == derivedstr );

  const numpunct_checked& npd = static_cast<const numpunct_checked&>(np);

  VERIFY( npd.base_truename() == basestr );

}

int main()

{

  test01();

  return 0;

}