Re: weak redefinition

[Wolfgang Lux]

> Am 14.04.2015 um 17:32 schrieb David Chisnall <theraven@sucs.org>:
> 
> On 14 Apr 2015, at 15:39, Riccardo Mottola <riccardo.mottola@libero.it> wrote:
>> 
>> do you have an authoritative reference to that? I wound "weak" and not 
>> "__weak". A language spec or a doc from Apple would be excellent, so I can 
>> argument to the NetBSD guys.
> 
> See:
> 
> https://developer.apple.com/library/mac/documentation/Cocoa/Conceptual/ProgrammingWithObjectiveC/EncapsulatingData/EncapsulatingData.html
> 
> weak is a context-dependent keyword that is only valid in property 
> declarations.  __weak (along with __strong / __unsafe_unretained) is a 
> storage qualifier that is valid on all declarations.

And FWIW, the __weak and __strong qualifiers have been present at least since 
Apple introduced garbage collection for Objective-C in Mac OS 10.5, i.e., since 
2007.

Wolfgang