iOS 17 Update Causes App to Crash on Some Devices

Hi, Adding a crash report might help, but in addition to that, it would be helpful have some idea of what operations were being performed on the collection view before the crash. Could you try enabling some debug logging available in UICollectionView, and then asking your users to trigger a sysdiagnose immediately after they run into the crash.

The logs can be enabled by setting some defaults like so:

int main(int argc, char * argv[]) {
    NSString *className = nil;
    NSString *delegateClassName = nil;
    @autoreleasepool {
        NSUserDefaults *uikitDefaults = [[NSUserDefaults alloc] initWithSuiteName:@"com.apple.UIKit"];
        [uikitDefaults registerDefaults:@{@"LogUICollectionView": @YES, @"LogUICollectionLayout": @YES}];
        delegateClassName = NSStringFromClass([<YOUR_APP_DELEGATE_CLASS>  class]);
        className = NSStringFromClass([UIApplication class]);
    }
    return UIApplicationMain(argc, argv, className, delegateClassName);
}

Please see https://forums.developer.apple.com/forums/thread/739560 for more information about sysdiagnoses.

Thank you for the reply, we will work on getting a sysdiagnose from one of our customers.

Regarding the last operations being performed, the crash is pointing to code that returns the height of the collectionview, specifically, it is calling layoutIfNeeded() We also tried to remove that call but it did not prevent the crashes.

Here is the crash report:

Thanks for your help!