iOS 18.0 (22A3354) -[UIGestureRecognizer _delayTouchesForEvent:inPhase:] + 292 Crash

Question

Created Sep ’24

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Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Exception Reason: *** -[__NSArrayM insertObject:atIndex:]: object cannot be nil Termination Reason: SIGNAL 6 Abort trap: 6 Terminating Process:XXXX [XXXX]

Triggered by Thread: 0

Application Specific Information: *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSArrayM insertObject:atIndex:]: object cannot be nil UserInfo:(null)'

Last Exception Backtrace: 0 CoreFoundation 0x1930d108c __exceptionPreprocess + 164 (NSException.m:249) 1 libobjc.A.dylib 0x1903d32e4 objc_exception_throw + 88 (objc-exception.mm:356) 2 CoreFoundation 0x193070424 -[__NSArrayM insertObject:atIndex:] + 1276 (NSArrayM.m:164) 3 UIKitCore 0x195b6249c 0x195818000 + 3450012 4 UIKitCore 0x1958c9070 0x195818000 + 725104 5 UIKitCore 0x195899c3c _UIGestureEnvironmentUpdate + 2488 (UIGestureEnvironment.m:192) 6 UIKitCore 0x19598f914 -[UIGestureEnvironment _deliverEvent:toGestureRecognizers:usingBlock:] + 336 (UIGestureEnvironment.m:843) 7 UIKitCore 0x195b2ff18 -[UIGestureEnvironment _updateForEvent:window:] + 188 (UIGestureEnvironment.m:810) 8 UIKitCore 0x195b2f2fc -[UIWindow sendEvent:] + 2948 (UIWindow.m:3627) 11 UIKitCore 0x1959c39b4 -[UIApplication sendEvent:] + 376 (UIApplication.m:12948) 13 UIKitCore 0x1959c3ee0 __dispatchPreprocessedEventFromEventQueue + 1048 (UIEventDispatcher.m:2641) 14 UIKitCore 0x1959cdcc4 __processEventQueue + 5696 (UIEventDispatcher.m:2999) 15 UIKitCore 0x1958c6270 updateCycleEntry + 160 (UIEventDispatcher.m:133) 16 UIKitCore 0x1958c3fe8 _UIUpdateSequenceRun + 84 (_UIUpdateSequence.mm:136) 17 UIKitCore 0x1958c3c38 schedulerStepScheduledMainSection + 172 (_UIUpdateScheduler.m:1171) 18 UIKitCore 0x1958c4bac runloopSourceCallback + 92 (_UIUpdateScheduler.m:1334) 19 CoreFoundation 0x1930a4088 CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 28 (CFRunLoop.c:1950) 20 CoreFoundation 0x1930a401c __CFRunLoopDoSource0 + 176 (CFRunLoop.c:1994) 21 CoreFoundation 0x1930a1b08 __CFRunLoopDoSources0 + 244 (CFRunLoop.c:2031) 22 CoreFoundation 0x1930a0d04 __CFRunLoopRun + 840 (CFRunLoop.c:2949) 23 CoreFoundation 0x1930a05b8 CFRunLoopRunSpecific + 572 (CFRunLoop.c:3414) 24 GraphicsServices 0x1deb361c4 GSEventRunModal + 164 (GSEvent.c:2196) 25 UIKitCore 0x195bf65f0 -[UIApplication _run] + 816 (UIApplication.m:3820) 26 UIKitCore 0x195ca510c UIApplicationMain + 340 (UIApplication.m:5472) 27 XXXX 0x104744880 main + 200 (main.m:41) 28 dyld 0x1b8873d34 start + 2724 (dyldMain.cpp:1334)

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Answer 1

DTS Engineer OP

Apple

Sep ’24

Are you able to easily reproduce the crash? If you are, then a test code would go a long way in reproducing the issue and investigating it. If you're posting a link to a project, be sure that it's a newly created project created from one of Xcode's templates that's stripped down to the bare minimum amount of code and files needed to reproduce the issue. Remove any third-party dependencies to focus your project completely on Apple's APIs. See Creating a Test Project for more details.

Could you also attach the crash logs to your post and clarify:

What specific API are you using?
What are the exact steps you took to reproduce and investigate the issue.
If you filed a bug, what was the bug number?
What else have you tried?

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