On 6/24/2013 1:18 PM, Michel Fortin wrote:
That's not a so big problem: just disallow taking pointers to member variables
inside of reference-counted memory blocks. At least in SafeD. This is a quite
rare thing to do in Objective-C anyway, I'd be surprised if it bothered anyone.
And I don't think it is very common in D either. Either way, if D was to
implement ARC for its own memory allocator instead of the current GC (which
would be great) there's noting to prevent implementing it so that reference
counts could be incremented from the middle address of a memory block, it'd be
quite easy in fact, and quite necessary too because of the way arrays work.
Usually, the most annoying part of ARC is retain cycles, especially implicit
ones created by blocks (Objective-C's delegate literals).
If the ref-counted blocks are allocated in the GC space, a GC run will get rid
of them!
