Hi, @moonkake. I'm still unable to resolve this crash. The crash seems to be quite common based on the crash statistics for my app. Here is all the information I have regarding these crashes:
The crash is sporadic and I have not been able to reproduce it manually.
It only occurs on devices running iOS 16.*.
The crash can happen on both iPhones and iPads.
It doesn't seem to be related to low memory.
Stack traces can vary, there are the three most common ones:
pdf_xref_get_trailer
Crashed: com.apple.main-thread
0 CoreGraphics 0x619a0 pdf_xref_get_trailer + 16
1 CoreGraphics 0x5e1f4 get_pages_dictionary + 24
2 CoreGraphics 0x61528 pdf_reader_get_number_of_pages + 80
3 PrintKitUI 0x562cc -[UIPrintPreviewPageFetcher fetchNumberOfItems] + 76
4 PrintKitUI 0x27178 -[UIPrintPreviewViewController collectionView:numberOfItemsInSection:] + 32
5 UIKitCore 0xa409c -[UICollectionViewData _updateItemCounts] + 228
6 UIKitCore 0x459948 -[UICollectionViewData numberOfSections] + 40
7 UIKitCore 0x61b78 -[UICollectionViewFlowLayout _getSizingInfosWithExistingSizingDictionary:] + 500
8 UIKitCore 0x6191c -[UICollectionViewFlowLayout _fetchItemsInfoForRect:] + 248
9 UIKitCore 0x75d80 -[UICollectionViewFlowLayout prepareLayout] + 192
10 UIKitCore 0x74044 -[UICollectionViewData _prepareToLoadData] + 192
11 UIKitCore 0x43d12c -[UICollectionViewData validateLayoutInRect:] + 96
12 UIKitCore 0x28f4c -[UICollectionView layoutSubviews] + 220
13 UIKitCore 0x4be0 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1992
14 QuartzCore 0xa074 CA::Layer::layout_if_needed(CA::Transaction*) + 500
15 QuartzCore 0x1d5f0 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 148
16 QuartzCore 0x2ea1c CA::Context::commit_transaction(CA::Transaction*, double, double*) + 444
17 QuartzCore 0x5dff4 CA::Transaction::commit() + 648
18 QuartzCore 0x47f3c CA::Transaction::flush_as_runloop_observer(bool) + 88
19 UIKitCore 0x4fdc04 _UIApplicationFlushCATransaction + 52
20 UIKitCore 0x64e4b0 _UIUpdateSequenceRun + 84
21 UIKitCore 0xcb2c8c schedulerStepScheduledMainSection + 144
22 UIKitCore 0xcb21e8 runloopSourceCallback + 92
23 CoreFoundation 0xd3128 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
24 CoreFoundation 0xdf7b4 __CFRunLoopDoSource0 + 176
25 CoreFoundation 0x645e8 __CFRunLoopDoSources0 + 244
26 CoreFoundation 0x7a0d4 __CFRunLoopRun + 828
27 CoreFoundation 0x7f3ec CFRunLoopRunSpecific + 612
28 GraphicsServices 0x135c GSEventRunModal + 164
29 UIKitCore 0x39d6e8 -[UIApplication _run] + 888
30 UIKitCore 0x39d34c UIApplicationMain + 340
...
pdf_reader_get_number_of_pages
Crashed: com.apple.main-thread
0 CoreGraphics 0x69aac pdf_reader_get_number_of_pages + 28
1 PrintKitUI 0x562b8 -[UIPrintPreviewPageFetcher fetchNumberOfItems] + 76
2 PrintKitUI 0x27100 -[UIPrintPreviewViewController collectionView:numberOfItemsInSection:] + 32
3 UIKitCore 0xa6be4 -[UICollectionViewData _updateItemCounts] + 220
4 UIKitCore 0x1305c -[UICollectionViewData isIndexPathValid:validateItemCounts:] + 52
5 UIKitCore 0x113c4 -[UICollectionViewData validatedGlobalIndexForItemAtIndexPath:] + 36
6 UIKitCore 0x66f50 -[UICollectionView _cellForItemAtIndexPath:] + 108
7 UIKitCore 0x31019c -[UICollectionView _endItemAnimationsWithInvalidationContext:tentativelyForReordering:animator:collectionViewAnimator:] + 1384
8 UIKitCore 0x270b54 -[UICollectionView _updateRowsAtIndexPaths:updateAction:updates:] + 396
9 UIKitCore 0x271ed0 -[UICollectionView reloadItemsAtIndexPaths:] + 52
10 PrintKitUI 0x277b8 -[UIPrintPreviewViewController reloadVisibleItems:] + 256
11 PrintKitUI 0x262b0 __63-[UIPrintPreviewViewController updatePdfURL:options:completed:]_block_invoke_2 + 44
12 Foundation 0xa7060 __NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK__ + 24
13 Foundation 0x7b1b0 -[NSBlockOperation main] + 104
14 Foundation 0x7b140 __NSOPERATION_IS_INVOKING_MAIN__ + 16
15 Foundation 0x3c4f4 -[NSOperation start] + 708
16 Foundation 0x3c228 __NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION__ + 16
17 Foundation 0x41940 __NSOQSchedule_f + 172
18 libdispatch.dylib 0x13114 _dispatch_block_async_invoke2 + 148
19 libdispatch.dylib 0x3f88 _dispatch_client_callout + 20
20 libdispatch.dylib 0x127f4 _dispatch_main_queue_drain + 928
21 libdispatch.dylib 0x12444 _dispatch_main_queue_callback_4CF + 44
22 CoreFoundation 0x9a6c8 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16
23 CoreFoundation 0x7c02c __CFRunLoopRun + 2036
24 CoreFoundation 0x80eb0 CFRunLoopRunSpecific + 612
25 GraphicsServices 0x1368 GSEventRunModal + 164
26 UIKitCore 0x3a1668 -[UIApplication _run] + 888
27 UIKitCore 0x3a12cc UIApplicationMain + 340
...
getPageImageForPage the same as @a.protska posted above.
I am planning to submit a TSI request to Apple.
AlamarDev
Users receive reputation points by contributing quality content to the forums.
Posts include post and replies published on the forums.
Post authors can mark replies as Accepted to indicate successful solutions.
Apple Developer Forums admins can mark replies as Apple Recommended to indicate an approved solution
Post
Replies
Boosts
Views
Activity
Hi, @webd . The workaround you described works like a charm. After implementing it, there have been almost no crashes on iOS 16.* related to PDF printing. Thanks a lot!