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Editorial Team
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Asked: 2026-05-26T05:19:13+00:00

I just installed XCode 4.2, according to to everything I have read ARC is

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I just installed XCode 4.2, according to to everything I have read ARC is turned on automatically, and you have to go to build phases and flag the files where you want to manage memory by yourself, which I have not done, yet it works like if I had.

The weird thing is that everything is still working fine for me, just like if I was still working with XCode 4, is this normal?. From what I read I am supposed to get thousands of warnings because I can no longer use release, retain and autorelease but I am not.

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  1. Editorial Team

    Since ARC is a build setting, I don’t know how it should be turned on by default. It’s always on for new project but I guess you are talking about existing ones.
    You can check if it’s turned on under BuildSettings (check All) Objective-C Automatic Reference Counting. Turn it on and you’ll get your warnings 🙂

    However, I would highly recommend using Edit->Refactor-> Convert to Objective-C ARC since it’s more reliable than migrating you code by your own. You can still choose to chance certain files personally if you like.

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