Re: __attribute__((NSObject)) not behaving as expected
Re: __attribute__((NSObject)) not behaving as expected
- Subject: Re: __attribute__((NSObject)) not behaving as expected
- From: Manfred Schwind <email@hidden>
- Date: Fri, 24 Jan 2014 20:10:59 +0100
Does ist help, if you assign it this way instead:
self.context = theContext;
In your original code you're directly accessing the "backed" instance variable instead of going over the property, so maybe your property-declaration is ignored in this case.
Regards,
Mani
Am 24.01.2014 um 19:58 schrieb Kevin Meaney <email@hidden>:
> Building on and compiling for minimum system of 10.9. Xcode 5.0.1
>
> Using ARC.
>
> I have a property declared so:
>
> @property (readonly, strong) __attribute__((NSObject)) CGContextRef context
>
> I have a designatied initializer defined like so:
>
> -(instancetype)initWithCGContext:(CGContextRef)theContext
>
> The object is alloc'd and the init method is called immediately after the context is created. Immediately after the init method returns the context is released.
>
> If in the implementation of the init method I have:
>
> self->_context = theContext
>
> Then the first time I try and access the context I get a memory access exception. If I replace that with:
>
> self->_context = CGContextRetain(theContext);
>
> Then I get a memory leak of the context when my object is destroyed.
>
> If however I just declare my property like so:
>
> @property (readonly) CGContextRef context;
>
> And in the initializer I use:
>
> self->_context = CGContextRetain(theContext);
>
> And add a dealloc:
>
> -(void)dealloc
> {
> CGContextRelease(self->_context);
> }
>
> Then everything works as desired.
>
> I'd like to know what I'm doing wrong.
>
> Kevin
>
>
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