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Re: How do I temporary retain self, under ARC?
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Re: How do I temporary retain self, under ARC?


  • Subject: Re: How do I temporary retain self, under ARC?
  • From: Andy Lee <email@hidden>
  • Date: Fri, 18 Jul 2014 00:23:55 -0400

On Jul 17, 2014, at 11:01 PM, Jens Alfke <email@hidden> wrote:
> Once I’ve identified such a bug, the fix is easy: put a [[self retain] autorelease] at the top of the method. Except now I’m using ARC, and I can’t find a simple way of doing it. I tried adding
> 	__unused id retainedSelf = self;
> but the optimizer recognizes that retainedSelf isn’t used and strips it out, making this a no-op. The only thing I’ve found that works is
> 	CFRetain((__bridge CFTypeRef)self);
> at the top of the method, and a corresponding CFRelease at the end, but this is pretty ugly and could cause leaks if the method returns early.

How about

	id retainedSelf = self;

at the beginning and

	[retainedSelf self];

at the end?

--Andy


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