LLDB crash

The code is called on the main thread. According to the crash report, thread 0 makes that assignment, Looking at the crash log, the abort originates here: 4 libobjc.A.dylib 0x00000001818d7fc0 _objc_fatal(char const*, ...) + 44 (objc-errors.mm:232) 5 libobjc.A.dylib 0x00000001818a6d78 weak_register_no_lock + 396 (objc-weak.mm:423) 6 libobjc.A.dylib 0x00000001818a6b40 objc_storeWeak + 472 (NSObject.mm:408) As it happen, you don't have to guess at why weak_register_no_lock failed, as the project is opensource. Here is the line that's crashing: _objc_fatal(Cannot form weak reference to instance (%p) of class %s. It is possible that this object was over-released, or is in the process of deallocation., (void*)referent, object_getClassName((id)referent)); That leads to here: and at the same time thread 16 is calling [NSImageView asynchronousPreparation:prepareResultUsingParameters:]. Unfortunately, I wouldn't necessarily assume this call is directly involved. From the large context in th

Whenever you encounter an Xcode crash, make sure to either submit the crash report to Apple through the CrashReporter dialog, or by filing a bug report with the original crash report attached.

Moved my feedback ticket to FB19548156 (iOS 16 Simulators crash due to iOS 17 symbols - Xcode 26 beta 5)

@Engineer Thanks for reply. Some more crash info. On simulator (did not test on device at this stage). Here is crash report: Error occurs in #4 notifyMe IBAction @IBAction func notifyMe(_ sender: UIButton) { let center = UNUserNotificationCenter.current() center.delegate = self center.getNotificationSettings(completionHandler: { (settings) in if settings.authorizationStatus == .notDetermined { center.requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in DispatchQueue.main.async { if !granted { // Alert user } } } } else if settings.authorizationStatus == .denied { DispatchQueue.main.async { // Alert user } } else if settings.authorizationStatus == .authorized { DispatchQueue.main.async { self.alarmButton.isHidden = self.duree <= 120 } } }) var alertStyle = UIAlertController.Style.alert let alertController = UIAlertController( title: NSLocalizedString(M'avertir, comment: ), message: NSLocalizedString(Attention, comment: ), preferredStyle: alertStyle) var title = NSL

I would be very helpful if you were able to reproduce this on an actual device and attach a full symbolicated crash log to the bug report. Also, if you are able to reproduce this with a small sample project, do attach that as well to help diagnose the issue.

Hi, Indeed, I do not see any call to NSApplicationMain just like you have: Thread 0 Crashed: 0 libsystem_kernel.dylib 0x19f8e85b0 __pthread_kill + 8 1 libsystem_pthread.dylib 0x19f922848 pthread_kill + 296 2 libsystem_c.dylib 0x19f828808 abort + 124 3 kDrive 0x1009954a4 KDC::AppServer::init()::$_1::operator()() const + 20 (appserver.cpp:404) 4 kDrive 0x100995450 QtPrivate::FunctorCall<>, QtPrivate::List<>, void, KDC::AppServer::init()::$_1>::call(KDC::AppServer::init()::$_1&, void**) + 44 (qobjectdefs_impl.h:146) 5 kDrive 0x1009953ec void QtPrivate::Functor::call<>, void>(KDC::AppServer::init()::$_1&, void*, void**) + 36 (qobjectdefs_impl.h:256) 6 kDrive 0x100995388 QtPrivate::QFunctorSlotObject, void>::impl(int, QtPrivate::QSlotObjectBase*, QObject*, void**, bool*) + 168 (qobjectdefs_impl.h:420) 7 QtCore 0x10520b0d8 QtPrivate::QSlotObjectBase::call(QObject*, void**) + 20 (qobjectdefs_impl.h:375) [inlined] 8 QtCore 0x10520b0d8 QSingleShotTimer::timerEvent(QTimerEven

Here's the crash report, as downloaded using Xcode's organizer. Will this work? I redacted the app and framework names. All of our symbols are symbolicated, except for MyFramework, which is a C++ library of ours whose only job is to decode video, so I think it's irrelevant to this crash. 2025-07-28_00-11-07.8114_-0600-ddc7ad494d0b81224d315ee28d9b96d7aca9a9ca.crash I'll take another look at that tech note. I've gone over it before, but maybe I'll find something if I look again. Thank you!

Any hints about how to get a crash dump or (better) a dump of the mouse driver & its data?

Thank you @DTS Engineer! This was exactly what I had, I was building with Xcode Beta 5 and running on previous iOS 26 versions. Because of the symbol changes, building with Xcode 26 Beta 5 and running on macOS / iOS 26 Beta 4 / 3 may trigger the crash. I was able to run properly after upgrading my iOS device to Beta 5 and no more crashes! It seems you'll need to be on both Xcode 26 Beta 5 + iOS 26 Beta 5.