Cool! That would eliminate some of the gymnastics I have been going through to 
make sure I reference the NSData object some time after I use the internal 
bytes.

On 2012-05-12, at 5:05 PM, Quincey Morris wrote:

> On May 12, 2012, at 13:55 , Dave Fernandes wrote:
> 
>> So when a method is declared __attribute__ ((objc_returns_inner_pointer)), 
>> then LLVM tracks regular pointers like it would NSObject pointers to see 
>> when the owning object can be dealloced? Just want to make sure I understand.
> 
> … to see when the owning object's variable's compile time scope ends. Other 
> retain/release optimizations aside, that would be the point where its retain 
> count is decremented, and that might in turn trigger deallocation.
> 
> But, yes, basically that's how I understand the documentation. It seems *way* 
> too convenient to be true. ;)
> 
> 


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