Hi there, while looking for a thread-safe buffer implementation, I discovered the upcoming circular_buffer library (with a thread-safe bounded_buffer implementation on top), and William E. Kempf's tutorial implementation of a bounded buffer (boost_1_33_1/libs/thread/tutorial/bounded_buffer.cpp in the 1.33.1 boost sources). The circular_buffer library is not yet officially available as part of Boost, but fortunately the tutorial implementaion does most of what I need. That is, with the notable exception that it covers Integers only. I have thus made a few small changes, including making it a template, so I can "plug in" any type I want, and I want to use it for the time being (until circular_buffer becomes officially available). ** My question now is, what the proper way is to refer to William and honour the license terms, while still excluding any "express or implied warranty" for my changes. ** Here is my current approach: /** * Note: This class was taken (with small modifications) * from the Boost.thread tutorials * ( boost_1_33_1/libs/thread/tutorial/bounded_buffer.cpp ). * The original code contained the following text: * *************************************************************** * Copyright (C) 2001-2003 * * William E. Kempf * * * * Permission to use, copy, modify, distribute and sell this * * software and its documentation for any purpose is hereby * * granted without fee, provided that the above copyright * * notice appear in all copies and that both that copyright * * notice and this permission notice appear in supporting * * documentation. William E. Kempf makes no representations * * about the suitability of this software for any purpose. * * It is provided "as is" without express or implied warranty. * *************************************************************** * * All modifications to William E. Kempf's original code, as shown * in this file, are covered by the same license as listed above, * and are Copyright (C) 2007 Ruediger Berlich. In particular, * please note that * *************************************************************** * Ruediger Berlich makes no representations * * about the suitability of this software for any purpose. * * It is provided "as is" without express or implied warranty. * *************************************************************** * / Is this sufficient ? And [do I have to / may I / should I] include an additional copyright statement for the modifications ? Or am I just paranoid ? ;-) Thanks and have a good easter time, Ruediger