That's similar to what I have used. Initially it started out simply as
id keepAlive=self;
...
keepAlive=nil;
but a few Xcode versions ago the static analyzer started complaining that it
wasn't really doing anything. So that last line became
if(keepAlive) { keepAlive=nil; }
which shut up the analyzer. [keepAlive self]; like Andy suggests would probably
work just as well, though probably a tad more expensive as a method call is
involved.
Gerd
On Jul 17, 2014, at 11:23 PM, Andy Lee <[email protected]> wrote:
> On Jul 17, 2014, at 11:01 PM, Jens Alfke <[email protected]> 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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