Instruments Crash using swiftui instrument

Question

Created 2d

Replies 3

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Participants 2

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.

Answered by DTS Engineer in 869796022

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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Answer 1

DTS Engineer OP

Apple

2d

Accepted Answer

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.

0

Answer 2

rbenjamin OP

1d

Sure thing, this is my feedback #: FB21366074

Thanks for taking a look!

0

Answer 3

DTS Engineer OP

Apple

6h

@rbenjamin thanks so much for the FB number and also for providing the sysdiagnose. Very complete and went to the correct team. Let's give them sometime to look into the issue and they should be able to communicate on the FB link!

You can see the status of your feedback in Feedback Assistant. There, you can track if the report is still being investigated, has a potential identifiable fix, or has been resolved in another way. The status appears beside the label "Resolution." We're unable to share any updates on specific reports on the forums.

For more details on when you'll see updates to your report, please see What to expect after submission.

Thanks again!!

Albert Pascual   Worldwide Developer Relations.

0