App not building iOS 16 and lower on Xcode 15

I recently upgraded to Xcode 15 from Xcode 14, and now my app only runs iOS17. When I try running on iOS 15/16, I get a very generic memory Thread 1: EXC_BAD_ACCESS (code=1, address=0x0) crash when my app attempts to launch on the simulator. Also, if I upload a build from my device, the crash happens on all real devices not running iOS17.

My teammate is still running Xcode 14 and is able to build on iOS 15/16 devices (minimum is 15 for our app), and can push builds that work for all users.

Is this a known issue, or am I missing something simple? The fact that upgrading Xcode versions is the only variable has made it really difficult to diagnose.

The only thing I have tried so far is the suggested fix for a known issue in the Xcode 15 release notes (https://developer.apple.com/documentation/xcode-release-notes/xcode-15-release-notes#Known-Issues). However, this doesn't seem likely to be the same issue as my minimum deployment target is 15.0. (I also am not sure I implemented that 'fix' correctly...)

Any help or direction would be much appreciated, thanks!

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epatts
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I too am having a similar problem. I also inquired about the error at the link below, but there is no answer yet.

https://developer.apple.com/forums/thread/744692

Posted by
sangwoon_kim
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  • @sangwoon_kim Ah okay thanks for linking that, it does appear to be the same issue. Have you tried removing HealthKit from the project (or maybe just that line?) to confirm that is the problematic call?

    —
    epatts

  • @sangwoon_kim Also, FYI, my code does not include that exact line, but does integrate HealthKit

    —
    epatts

  • @epatts Yes, of course. All codes except HealthKit worked.

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    sangwoon_kim
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