Hi!
We're trying to investigate the following crash, but have a little bit hard time of understanding what the reason for it might be. I assume this might be us trying to reduce the state too often?
Thread 0 Crashed:
0 libswiftCore.dylib 0x00000001884fec20 _swift_release_dealloc + 48 (:-1)
1 libswiftCore.dylib 0x00000001884fd938 bool swift::RefCounts<swift::RefCountBitsT<(swift::RefCountInlinedness)1>>::doDecrementSlow<(swift::PerformDeinit)1>(swift::RefCountBitsT<(swift::RefCountInlinedness)1>, unsigned int) + 240 (:-1)
2 SwiftUICore 0x000000018ed7f940 specialized _ArrayBuffer._consumeAndCreateNew(bufferIsUnique:minimumCapacity:growForAppend:) + 244 (:-1)
3 SwiftUICore 0x000000018ed7ecdc specialized Array._createNewBuffer(bufferIsUnique:minimumCapacity:growForAppend:) + 16 (:-1)
4 SwiftUICore 0x000000018ed7ecdc specialized Array._reserveCapacityAssumingUniqueBuffer(oldCount:) + 24 (:-1)
5 SwiftUICore 0x000000018ed7ecdc specialized Array.append(_:) + 56 (:-1)
6 SwiftUICore 0x000000018ed7ecdc NSAttributedString.MetricsCache.metrics(requestedSize:layoutMargins:wantsNumberOfLineFragments:context:) + 2996 (:-1)
7 SwiftUICore 0x000000018eda7afc ResolvedStyledText.StringDrawing.draw(in:with:applyingMarginOffsets:containsResolvable:context:renderer:) + 208 (:-1)
8 SwiftUICore 0x000000018ee5fe90 ResolvedStyledText.draw(in:with:applyingMarginOffsets:context:renderer:) + 100 (:-1)
9 SwiftUICore 0x000000018ee5fe90 closure #1 in DisplayList.ViewUpdater.Platform.updateItemView(_:index:item:state:) + 176 (:-1)
10 SwiftUICore 0x000000018ee5f7a0 closure #1 in PlatformDrawableContent.draw(in:size:contentsScale:state:) + 20 (:-1)
11 SwiftUICore 0x000000018ee5f7a0 CGContextRef.withPlatformContext(do:) + 56 (:-1)
12 SwiftUICore 0x000000018ee5f7a0 PlatformDrawableContent.draw(in:size:contentsScale:state:) + 136 (:-1)
13 SwiftUICore 0x000000018ee5fd94 CGDrawingLayer.draw(in:) + 88 (:-1)
14 SwiftUICore 0x000000018ee5fd94 @objc CGDrawingLayer.draw(in:) + 224 (:-1)
15 QuartzCore 0x000000018ad2304c CABackingStoreUpdate_ + 344 (:-1)
16 QuartzCore 0x000000018ad22df0 invocation function for block in CA::Layer::display_() + 72 (:-1)
17 QuartzCore 0x000000018ad257c4 CA::Layer::display_() + 2180 (:-1)
18 QuartzCore 0x000000018ad257c4 -[CALayer _display] + 2312 (:-1)
19 QuartzCore 0x000000018ac5d0f4 CA::Layer::display_if_needed(CA::Transaction*) + 256 (:-1)
20 QuartzCore 0x000000018ac5d0f4 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 732 (:-1)
21 QuartzCore 0x000000018ac593c8 CA::Context::commit_transaction(CA::Transaction*, double, double*) + 568 (:-1)
22 QuartzCore 0x000000018ac587c0 CA::Transaction::commit() + 428 (:-1)
23 QuartzCore 0x000000018ac59018 CA::Transaction::flush() + 84 (:-1)
24 QuartzCore 0x000000018ac585c0 CA::Transaction::flush_as_runloop_observer(bool) + 224 (:-1)
25 UIKitCore 0x000000018b111800 _UIApplicationFlushCATransaction + 52 (:-1)
26 UIKitCore 0x000000018b110e74 performCATransactionCommitAction + 308 (:-1)
27 UIKitCore 0x000000018b110e74 __setupUpdateSequence_block_invoke_2 + 336 (:-1)
28 UIKitCore 0x000000018b117b88 _UIUpdateSequenceRunNext + 128 (:-1)
29 UIKitCore 0x000000018b117928 schedulerStepScheduledMainSectionContinue + 48 (:-1)
30 UpdateCycle 0x00000002b9c47bc0 UC::DriverCore::continueProcessing() + 84 (:-1)
31 CoreFoundation 0x0000000186ea8c20 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 (:-1)
32 CoreFoundation 0x0000000186ea8b94 __CFRunLoopDoSource0 + 192 (:-1)
33 CoreFoundation 0x0000000186e8a268 __CFRunLoopDoSources0 + 316 (:-1)
34 CoreFoundation 0x0000000186e89384 __CFRunLoopRun + 416 (:-1)
35 CoreFoundation 0x0000000186e8a7f4 _CFRunLoopRunSpecificWithOptions + 344 (:-1)
36 GraphicsServices 0x000000023154cf24 GSEventRunModal + 120 (:-1)
37 UIKitCore 0x000000018b1681cc UIApplicationMain + 336 (:-1)
38 UIKitCore 0x000000018b403644 UIApplicationMain(_:_:_:_:) + 104 (:-1)
39 MyApp 0x00000001021d9c08 main + 116 (/<compiler-generated>:10)
40 MyApp 0x00000001021d9c08 0x1021d4000 + 23560 (AppDelegate.swift:0)
41 dyld 0x0000000186cdb5b8 start + 6616 (:-1)
Attaching one of the crashes, but I do have an access to xcrashpoint file as well. Crash:
It seems to happen on the following version of iOS:
- 18.7.8
- 26.5
- 26.6.2
- 26.7.1
- 27.0
- 27.0.1
Would appreciate any tips!
