Hi all,
Firebase statistics show that some crashes seem to occur suddenly. Can you give me some suggestions?
Users also meet the following requirements:
- iOS18 and above
- RTL language
From the stack frame, the crash occurred in the transition animation project, but I did not reproduce this stack frame
A very small number of users can experience it twice
The crashed page is relatively complex, and it is a mixture of auto-layout and frame
I retrieved some other articles, but they don’t seem to be the same problem
- https://developer.apple.com/forums/thread/693118
- https://stackoverflow.com/questions/56027014/collectionview-crashing-in-nsisengine-after-a-few-scrolls
Thank you for reading, looking forward to your reply ；)
Distributor ID: com.apple.AppStore Hardware Model: iPhone13,2 Version: 2.88.4 (1) AppStoreTools: 15F31e AppVariant: 1:iPhone13,2:15 Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd [1] Date/Time: 2024-09-22 16:39:48.5997 +0300 Launch Time: 2024-09-22 16:39:23.7734 +0300 OS Version: iPhone OS 18.0 (22A3354) Release Type: User Baseband Version: 5.02.06 Report Version: 104 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: SIGNAL 6 Abort trap: 6 Triggered by Thread: 0 Last Exception Backtrace: 0 CoreFoundation 0x19484508c __exceptionPreprocess + 164 (NSException.m:249) 1 libobjc.A.dylib 0x191b472e4 objc_exception_throw + 88 (objc-exception.mm:356) 2 Foundation 0x193c162fc -[NSAssertionHandler handleFailureInFunction:file:lineNumber:description:] + 272 (NSException.m:261) 3 CoreAutoLayout 0x1b7662160 _engineVar_rawRemove + 376 (NSISEngine_EngineVar.h:181) 4 CoreAutoLayout 0x1b766e9f4 -[NSISEngine removeConstraintWithMarker:] + 1084 (NSISEngine.m:2701) 5 CoreAutoLayout 0x1b766ce24 -[NSLayoutConstraint _removeFromEngine:] + 148 (NSLayoutConstraint.m:1693) 6 UIKitCore 0x19701d224 -[UIView _layoutEngine_willRemoveLayoutConstraint:] + 60 (NSLayoutConstraint_UIKitAdditions.m:1080) 7 UIKitCore 0x19701d1c8 -[UIView(UIConstraintBasedLayout) nsli_removeConstraint:] + 84 (NSLayoutConstraint_UIKitAdditions.m:1298) 8 CoreAutoLayout 0x1b7668ad8 __55+[NSLayoutConstraint _addOrRemoveConstraints:activate:]_block_invoke + 40 (NSLayoutConstraint.m:2097) 9 CoreAutoLayout 0x1b766f030 -[NSISEngine withBehaviors:performModifications:] + 84 (NSISEngine.m:1995) 10 CoreAutoLayout 0x1b76693e0 +[NSLayoutConstraint _addOrRemoveConstraints:activate:] + 308 (NSLayoutConstraint.m:2095) 11 UIKitCore 0x19701b96c -[UIView(AdditionalLayoutSupport) _withUnsatisfiableConstraintsLoggingSuspendedIfEngineDelegateExists:] + 480 (NSLayoutConstraint_UIKitAdditions.m:4388) 12 UIKitCore 0x19701b118 -[UIView _processChangesFromOldTraits:toCurrentTraits:withBehavior:] + 196 (UIView.m:7857) 13 UIKitCore 0x19701b010 -[UIView _updateTraitCollectionAndProcessChangesWithBehavior:previousCollection:] + 112 (UIView.m:7848) 14 UIKitCore 0x19701aedc -[UIView _updateTraitsIfNeededWithBehavior:] + 156 (UIView.m:7832) 15 UIKitCore 0x196fb12f4 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 152 (UIView.m:17640) 16 UIKitCore 0x196fb1524 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 712 (UIView.m:0) 17 UIKitCore 0x197089ab8 -[UIScrollView _didMoveFromWindow:toWindow:] + 88 (UIScrollView.m:3593) 18 UIKitCore 0x196fb1524 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 712 (UIView.m:0) 19 UIKitCore 0x197089ab8 -[UIScrollView _didMoveFromWindow:toWindow:] + 88 (UIScrollView.m:3593) 20 UIKitCore 0x196fb1524 -[UIView(Internal) _didMoveFromWindow:toWindow:] + 712 (UIView.m:0) 21 UIKitCore 0x196fa31b4 __45-[UIView(Hierarchy) _postMovedFromSuperview:]_block_invoke + 128 (UIView.m:14070) 22 UIKitCore 0x196fa60e4 -[UIView _postMovedFromSuperview:] + 492 (UIView.m:14053) 23 UIKitCore 0x196fa4b20 -[UIView(Internal) _addSubview:positioned:relativeTo:] + 2192 (UIView.m:18579) 24 UIKitCore 0x19821a2b4 -[_UIViewControllerTransitionConductor _startTransition:fromViewController:toViewController:] + 944 (_UIViewControllerTransitionConductor.m:325) 25 UIKitCore 0x198219b80 -[_UIViewControllerTransitionConductor startDeferredTransitionIfNeeded] + 644 (_UIViewControllerTransitionConductor.m:207) 26 UIKitCore 0x1970e34b0 -[UINavigationController __viewWillLayoutSubviews] + 84 (UINavigationController.m:8020) 27 UIKitCore 0x1973867e8 -[UILayoutContainerView layoutSubviews] + 172 (UILayoutContainerView.m:147) 28 UIKitCore 0x196f9c578 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2424 (UIView.m:20400) 29 XXXXXX 0x1083ecc9c UIView.layoutSublayersOnMainThread(of:) + 40 (Swizzling+Extensions.swift:85) 30 XXXXXX 0x1083ecc9c @objc UIView.layoutSublayersOnMainThread(of:) + 104 (:78) 31 QuartzCore 0x1962e1664 CA::Layer::layout_if_needed(CA::Transaction*) + 496 (CALayer.mm:10944) 32 QuartzCore 0x1962e11f0 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 148 (CALayer.mm:2638) 33 QuartzCore 0x19633829c CA::Context::commit_transaction(CA::Transaction*, double, double*) + 472 (CAContextInternal.mm:2613) 34 QuartzCore 0x1962b70d4 CA::Transaction::commit() + 648 (CATransactionInternal.mm:420) 35 QuartzCore 0x1962fa398 CA::Transaction::flush_as_runloop_observer(bool) + 88 (CATransactionInternal.mm:928) 36 UIKitCore 0x19703ab78 _UIApplicationFlushCATransaction + 52 (UIApplication.m:3311) 37 UIKitCore 0x197038174 __setupUpdateSequence_block_invoke_2 + 332 (_UIUpdateScheduler.m:1652) 38 UIKitCore 0x197037fe8 _UIUpdateSequenceRun + 84 (_UIUpdateSequence.mm:136) 39 UIKitCore 0x197037c38 schedulerStepScheduledMainSection + 172 (_UIUpdateScheduler.m:1171) 40 UIKitCore 0x197038bac runloopSourceCallback + 92 (_UIUpdateScheduler.m:1334) 41 CoreFoundation 0x194818088 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 (CFRunLoop.c:1950) 42 CoreFoundation 0x19481801c __CFRunLoopDoSource0 + 176 (CFRunLoop.c:1994) 43 CoreFoundation 0x194815b08 __CFRunLoopDoSources0 + 244 (CFRunLoop.c:2031) 44 CoreFoundation 0x194814d04 __CFRunLoopRun + 840 (CFRunLoop.c:2949) 45 CoreFoundation 0x1948145b8 CFRunLoopRunSpecific + 572 (CFRunLoop.c:3414) 46 GraphicsServices 0x1e02aa1c4 GSEventRunModal + 164 (GSEvent.c:2196) 47 UIKitCore 0x19736a5f0 -[UIApplication _run] + 816 (UIApplication.m:3820) 48 UIKitCore 0x19741910c UIApplicationMain + 340 (UIApplication.m:5472) 49 XXXXXX 0x10460c0ec main + 236 (main.swift:18) 50 dyld 0x1b9fe7d34 start + 2724 (dyldMain.cpp:1334) Thread 0 Crashed: 0 libsystem_kernel.dylib 0x00000001e4663274 __pthread_kill + 8 (:-1) 1 libsystem_pthread.dylib 0x000000021bb92ef8 pthread_kill + 268 (pthread.c:1721) 2 libsystem_c.dylib 0x000000019c577b6c __abort + 136 (abort.c:163) 3 libsystem_c.dylib 0x000000019c577ae4 abort + 140 (abort.c:130) 4 libc++abi.dylib 0x000000021bab65b8 abort_message + 132 (abort_message.cpp:78) 5 libc++abi.dylib 0x000000021baa4bac demangling_terminate_handler() + 348 (cxa_default_handlers.cpp:77) 6 libobjc.A.dylib 0x0000000191b62e04 _objc_terminate() + 156 (objc-exception.mm:496) 7 XXXXXX 0x000000010ca8d014 FIRCLSTerminateHandler() + 340 (FIRCLSException.mm:452) ... 12 libc++abi.dylib 0x000000021bab587c std::__terminate(void (*)()) + 16 (cxa_handlers.cpp:59) 13 libc++abi.dylib 0x000000021bab90ac __cxa_rethrow + 204 (cxa_exception.cpp:648) 14 libobjc.A.dylib 0x0000000191b5e650 objc_exception_rethrow + 44 (objc-exception.mm:399) 15 CoreFoundation 0x000000019481467c CFRunLoopRunSpecific + 768 (CFRunLoop.c:3430) 16 GraphicsServices 0x00000001e02aa1c4 GSEventRunModal + 164 (GSEvent.c:2196) 17 UIKitCore 0x000000019736a5f0 -[UIApplication _run] + 816 (UIApplication.m:3820) 18 UIKitCore 0x000000019741910c UIApplicationMain + 340 (UIApplication.m:5472) 19 XXXXXX 0x000000010460c0ec main + 236 (main.swift:18) 20 dyld 0x00000001b9fe7d34 start + 2724 (dyldMain.cpp:1334)
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