apple blocks extension

[Vincent R.]

On Wed, 16 Sep 2009 09:20:58 -0700, Ian Lance Taylor <iant@google.com>
wrote:
> Mark Mitchell <mark@codesourcery.com> writes:
> 
>> Ian Lance Taylor wrote:
>>
>>> programs.  So it seems to me that any changes that Apple makes to gcc
>>> (or gdb, emacs, etc.) can simply be brought over by any interested
>>> party.
>>
>> I'd certainly check with the FSF before betting on that.  ISTR that
some
>> copyright assignments have a "contribution" step; simple publication
may
>> not be sufficient.
> 
> True, though Apple's entry in the copyright file says "assigns past and
> future changes" (I checked before the above e-mail).  Certainly checking
> with the FSF is a good idea.
> 
> Ian

While we are discussing apple extension, is there a list of apple specific
extension about 
C and objective compiler ?