> On 23 Oct 2014, at 04:31, Greg Parker <[email protected]> wrote:
> 
> 
>> On Oct 22, 2014, at 12:04 PM, Gerriet M. Denkmann <[email protected]> 
>> wrote:
>> 
>>> On 23 Oct 2014, at 01:37, Scott Ribe <[email protected]> wrote:
>>> 
>>> On Oct 22, 2014, at 12:19 PM, Jonathan Mitchell <[email protected]> 
>>> wrote:
>>>> 
>>>> Surely the code that returns the object pointed to by temp has to ensure 
>>>> that the object has been correctly retained?
>>> 
>>> So, maybe __autorelease?
>> 
>> Tried:
>> [ iv invoke ];
>> NSDictionary * __autoreleasing a;
>> [ iv getReturnValue: &a ];
>> 
>> Result: no crash.
>> 
>> So, indeed, __autoreleasing seems to be the answer.
>> ( __autoreleasing is used to denote arguments that are passed by reference 
>> (id *) and are autoreleased on return.)
> 
> __autoreleasing is not correct, although it might happen to work today. 
> __autoreleasing means the value stored in the variable is autoreleased. 
> -getReturnValue: does not autorelease the value it stores, so the annotation 
> does not match the behavior.
> 
> The annotation that matches the behavior is __unsafe_unretained. Use that 
> instead.

Just tried this.
Result: no crash, no leaks (Leaks Instrument). Perfect.

Thanks a lot!

Kind regards,

Gerriet.


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