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Re: Xcode 8 and iOS 8
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Re: Xcode 8 and iOS 8


  • Subject: Re: Xcode 8 and iOS 8
  • From: Jens Alfke <email@hidden>
  • Date: Tue, 11 Oct 2016 11:56:44 -0700


On Oct 11, 2016, at 11:47 AM, Alex Zavatone <email@hidden> wrote:

With this data, it's clear to me that Xcode 8 has a pretty significant issue with building to iOS 8, one that should be apparent to anyone who tried to build and run their app on iOS 8 from Xcode 8, as long as their app has view controller that features a method known as viewDidLoad within it.

Just because you get this bug, doesn’t mean that everyone else does.

Consider that, if this were true, you’d be hearing a lot about it from lots of developers; it would perhaps even make it to dev-centric news sites like Daring Fireball. Users still on iOS 8 would be complaining that every app that updates starts crashing afterwards. It’s pretty unlikely that Apple would even ship a GM release of Xcode with such a glaring bug.

I think it’s a lot more likely that there’s something specific to your app. Maybe you’ve got a random memory-smashing bug that somehow never manifested before, but is triggered by some change in the way Clang generates code. Or maybe something very specific that you’re doing is triggering a code-gen bug in Clang, or there’s an obscure API you use that Xcode is generating incorrect calling code for.

Have you run your app with the Address Sanitizer? That’s where I’d start.

—Jens
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  • Follow-Ups:
    • Re: Xcode 8 and iOS 8
      • From: Alex Zavatone <email@hidden>
References: 
 >Xcode 8 and iOS 8 (From: Alex Zavatone <email@hidden>)
 >Re: Xcode 8 and iOS 8 (From: Quincey Morris <email@hidden>)
 >Re: Xcode 8 and iOS 8 (From: Alex Zavatone <email@hidden>)

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