> On Sep 26, 2019, at 5:20 PM, Gabriel Zachmann via Cocoa-dev
> <cocoa-dev@lists.apple.com> wrote:
>
>> The issue in the below code to my eye is that you allocate a path with
>> CGPathCreateWithRect (+1) but then don't release it.
>>
>> In that case, I am wondering:
>> doesn't ownership pass to the textlayer ?
>> If yes, shouldn't textlayer release the path when it gets destroyed by the
>> ARC?
>>
>> CALayer will indeed release shadowPath when it’s deallocated. However,
>> CALayer.setShadowPath doesn’t expect to be passed a +1 reference, so it will
>> retain/copy its argument, and it’s that retain which will be balanced by the
>> release during object destruction. Functions and methods generally do not
>> expect to be passed +1 objects.
>
> So, if I understand you correctly, I should do this:
>
> textlayer.shadowPath = CGPathCreateWithRect( textlayer.bounds, NULL );
> CFRelease( textlayer.shadowPath )
>
> ?
> Is that correct?
From a memory perspective, yes.
—Rob
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