allocFix.hpp

/*
 * allocFix.hpp
 *
 * This file is part of Algorithms library toolkit.
 * Copyright (C) 2017 Jan Travnicek (jan.travnicek@fit.cvut.cz)

 * Algorithms library toolkit 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 of the License, or
 * (at your option) any later version.

 * Algorithms library toolkit 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 Algorithms library toolkit.  If not, see <http://www.gnu.org/licenses/>.
 *
 * Created on: Mar 6, 2018
 * Author: Jan Travnicek
 */

#ifndef __ALLOC_FIX_HPP_
#define __ALLOC_FIX_HPP_

// related to issue with 'undefined reference to allocator < ... >::allocator ( )', subject of a delete when g++ fixes the issue
// the undefined reference occurs when one inherits from a class whose constructor has default value for the allocator
// I guess the default parameter construction (allocator constructor) should be inlined but it isn't. Its code is not emited either.

namespace ext {

/**
 * Class implementing the fix of undefined allocator
 *
 * TODO test if later versions of g++ are no longer affected.
 */
template < class Alloc >
class AllocFix {
public:
	AllocFix ( ) {
		// just to make sure the allocator constructor exists
		static Alloc alloc;
	}
};

} /* namespace ext */

#endif /* __ALLOC_FIX_HPP_ */