Re: Property synthesis trouble - 32 vs 64 bit builds
Re: Property synthesis trouble - 32 vs 64 bit builds
- Subject: Re: Property synthesis trouble - 32 vs 64 bit builds
- From: Jens Alfke <email@hidden>
- Date: Tue, 05 Jul 2016 09:27:39 -0700
> On Jul 5, 2016, at 4:36 AM, Jonathan Taylor <email@hidden> wrote:
>
> It surprises me that I have to write different synthesis code for 32- or 64-bit builds
It’s because they use different Obj-C runtimes. For compatibility reasons, 32-bit Mac apps still use the old runtime, while 64-bit apps (and all iOS apps) get to use the new improved runtime.
One of the differences between the runtimes is how instance variables are accessed, and I think your particular situation — trying to synthesize a property backed by an _inherited_ ivar — is an edge case.
You could ask this on the objc-language mailing list to see if any gurus can weigh in.
—Jens
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