Instruments Crash using swiftui instrument

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Created 13h

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Instruments is crashing when the swiftui instrument is stopped (the session is finished) and the transfer begins from device to device:

Crashed Thread: 11 Dispatch queue: com.apple.swiftuitracingsupport.reading

Exception Type: EXC_BAD_INSTRUCTION (SIGILL) Exception Codes: 0x0000000000000001, 0x0000000000000000

Termination Reason: Namespace SIGNAL, Code 4 Illegal instruction: 4 Terminating Process: exc handler [1633]

I've tried removing derived data, reinstalling xcode, updating xcode (I originally thought this might be the issue -- I needed to update to 26.2 from the 26 RC -- the update didn't fix crash or change the crash report), and restarting both devices.

I'm running Instruments/Xcode 26.2 on a MacBook Pro 15" (2018) running Mac OS 15.7.2 (24G325) with an iPhone 16 Pro Max running 26.2.

Hoping someone else might have seen this or could help me troubleshoot. I find the swiftui instrument be helpful and like to use it :) I can post a complete crash report as well.

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Answer 1

DTS Engineer OP

Apple

13h

Thanks for the post.

It looks like you're encountering a specific crash related to the SwiftUI instrument in Xcode 26.2, which can be quite frustrating, especially when it interrupts a useful workflow. Given that you've already attempted some common troubleshooting steps like removing derived data, reinstalling, updating Xcode, and restarting devices, and that is a crash on the Instruments app let’s go ahead and file a bug:

Once you open the bug report, please post the FB number here for my reference.

If you have any questions about filing a bug report, take a look at Bug Reporting: How and Why?

Albert Pascual   Worldwide Developer Relations.

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