PerformBatchUpdates crashes with NSInternalInconsistencyException requesting absurd index

Originator:smiller
Number:rdar://32544063 Date Originated:June 2 2017, 2:09 PM
Status:Closed Resolved:
Product:iOS + SDK Product Version:All iPhone and iOS versions
Classification:UIKit Reproducible:Unable
 
Area:
UIKit

Summary:
Please see the included stack traces for this bug.

We are unable to reproduce this crash, but it has started occurring in as high as 0.1% of sessions. While we do not have reproduction steps, we know that when using `UICollectionView.reloadSections` instead of `UICollectionView.reloadData` this crash does not occur. 

Because `UICollectionView.reloadSections` instead of `UICollectionView.reloadData` fixes the crashes we suspect that this is similar to the bug filed in Bug Report #32543861 (https://openradar.appspot.com/32543861).

Steps to Reproduce:
Unknown. We have been unsuccessful in attempts to reproduce this bug.

It seems that a similar crash has been reported in bug report #27354858 (https://openradar.appspot.com/27354858) which has reproduction steps. However, we do not use `insertItems` in the `performBatchUpdates` or elsewhere in our code. We do use `insertSections` but only once at the beginning of our `UICollectionView` lifecycle.

Steps to Reproduce:
Unknown. We have been unsuccessful in attempts to reproduce this bug.

It seems that a similar crash has been reported in bug report #27354858, https://openradar.appspot.com/27354858 which has reproduction steps. However, we do not use `insertItems` in the `performBatchUpdates` or elsewhere in our code. We do use `insertSections` but only once at the beginning of our `UICollectionView` lifecycle.

Expected Results:
No crashes.

Observed Results:
Crashes.

Version:
All iOS versions, it seems there is a reduced number of crashes on iOS 10.3, but it is unclear.

Notes:


Configuration:
All iPhone devices, there seems to be no correlation to hardware.

Comments

Apple Developer Relations [October 12 2017, 2:02 PM]

No response from the originator, now closing the bug report.

By smiller at Oct. 17, 2017, 12:34 a.m. (reply...)

Apple Developer Relations [September 19 2017, 11:39 AM]

Please verify this issue with the iOS 11 GM and update your bug report at https://bugreport.apple.com/ with your results.

iOS 11 GM (15A372) https://developer.apple.com/download/ Posted Date: Sep 19th, 2017

If the issue persists, please attach a new sysdiagnose captured in the latest build and attach it to the bug report. Thank you.

iOS sysdiagnose Instructions: https://developer.apple.com/services-account/download?path=/iOS/iOS_Logs/sysdiagnose_Logging_Instructions.pdf

By smiller at Oct. 17, 2017, 12:33 a.m. (reply...)

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