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LLDB crash

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Reply to Xcode 12 crashes as soon as I open my workspace
I am on Xcode 12.4 and also having this problem with my Flutter project. Earlier today it was opening fine, then I quit Xcode, built a new ios version of the app through VS terminal, then tried to reopen my project in Xcode but nothing happens when I click on the .xcworkspace file, it doesn't open anything. It does open other projects successfully, but still not the one above. After restarting Mac and trying again, it still does not open, but gave me the message: Xcode quit unexpectedly Process: Xcode [2379] Path: /Applications/Xcode.app/Contents/MacOS/Xcode Identifier: com.apple.dt.Xcode Version: 12.4 (17801) Build Info: IDEFrameworks-17801000000000000~7 (12D4e) App Item ID: 497799835 App External ID: 839994694 Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: Xcode [2379] User ID: 501 Date/Time: 2021-04-02 18:33:36.412 +0100 OS Version: Mac OS X 10.15.7 (19H2) Report Version: 12 Bridge OS Version: 4.6 (17P6610) Anonymous UUID: 539C0A09-D3B8-3B12-BC86-25902B07D97B Tim
Apr ’21
Crashing
My phone just keeps crashing, screen turns off and the iphone just reboots himself. It happend now 6-7 times in 1,5 hours. I have a Iphone 15 Pro (IOS 18.0) what can i do?
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311
Jul ’24
[NSNotificationCenter postNotificationName:object:userInfo:] () crash
I am seeing this crash (log at the bottom) after I am doing playing audio with AVAudioEngine. I know it might be related to the notification observer been released without calling removeObserver first. I have reviewed my code to make sure that removeObserver is called in the dealloc method. But to be sure, I have comment out adding all the observers that listens to any notification from the Audio engine but I am still getting this crash. It is much easier to reproduce if I use a bluetooth headphone. Any suggestions on how to debug this issue? I tried to printout the notification name with po $arg1 ($arg2, or $arg3) but I get this error on the console (lldb) po $arg1error: Couldn't materialize: couldn't read the value of register x0Errored out in Execute, couldn't PrepareToExecuteJITExpressionThread 4Queue : engine (serial)#0 0x000000019a4c1bd0 in objc_msgSend ()#1 0x0000000185e123a4 in +[NSConcreteNotification newTempNotificationWithName:object:userInfo:] ()#2 0x0000000185e122e0 in
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1.3k
Oct ’15
Unnamed_Symbol Crash
Experience a hard crash that I can easily replicate when selecting a specific Navigation Link that is contained in a List on the Sidebar of my Navigation split view. I can replicate the crash with no issues, but I am unacle to identify the cause. What does this crash mean? How can I find the mine of code that is causing the crash? myDashboard 11-14-22, 3-25 PM 2.crash
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603
Nov ’22
Crashes discrepancy
Hi,In iTunes Connect, if I navigate to the TestFlight tab, and look at the list of builds for my app, the latest build shows the number 4 in the Crashes column.However, if I select that build number in the Crashes tab of the Organizer window in Xcode, it says No Crashes.Also, if I click the build number in TestFlight to see the details of the build, there are no numbers (not even zeros) in the Crashes column.How should I interpret this information? Were there actually 4 crashes? If so, why didn't I get any crash reports?Thanks,Frank
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448
May ’17
Reply to EXC_BAD_INSTRUCTION
Ed and I discussed the issue behinds the scenes, and so I am chiming in to comment the following error from the Core Data perspective. Regarding the following error: error: :8:15: error: cannot convert value of type 'NSFetchRequest' to expected argument type 'NSFetchRequest' context.fetch(request) ^ :8:15: note: arguments to generic parameter 'ResultType' ('ResultType' and 'any NSFetchRequestResult') are expected to be equal This seems to indicate that you were passing an NSFetchRequest object tied to one entity as an argument to a closure (configurationBlock?) and the closure expects (or infers) a fetch request tied to the other entity. Since the potential type mismatch happens in runtime, it's hard to reason the why by simply reading the piece of code. Do you have a minimal sample project that reproduce the issue? You mentioned that the error does not occur on every call, but since you've figured out the line triggering the crash and use lldb to trigger the crash report, I'd think
Mar ’25
Reply to TabView reload all content constantly
Okay, looks like this is entirely down to SwiftUI being weird. It appears to be gaming the UITabBar system. Each time you tap to select a tab, SwiftUI is changing the view controller list for the tab bar. For n tabs, it contains n-1 plain UIViewControllers with empty views, and 1 HostingController<_ViewList_View>. Tapping on a tab will update the content of hosting controller to contain the content of the SwiftUI tab, and it will reassign the UITabBarController's viewControllers property—it moves the HostingController to the index of the tapped tab, and puts a new empty UIViewController at its old position.Here's the output of that property as I walk through four SwiftUI tabs:(lldb) po [$21 viewControllers] <__NSArrayM 0x6000015091d0>( <_TtGC7SwiftUI19UIHostingControllerVS_14_ViewList_View_: 0x7fddabe0c600>, <UIViewController: 0x7fdd9bc2eeb0>, <UIViewController: 0x7fddabf2bd80>, <UIViewController: 0x7fddabd11b40> ) (lldb) po [$21 viewControllers] <__NSA
Topic: UI Frameworks SubTopic: SwiftUI Tags:
Oct ’19
App crash without "real" crash log
Hi all, Some of my end users are facing a crash at application start on iOS 15.0. Usually, I expect them to send crash logs (.crash format / .ips), so that I can symbolicate those files and check the root cause of the crash. This time, what they sent me is different to what I'm used to. It looks like a crash log but I don't find the real root trace linked to my app. I can see that the method abort() is called from CoreFoundation: exception : {codes:0x0000000000000000, 0x0000000000000000,rawCodes:[0,0],type:EXC_CRASH,signal:SIGABRT}, asi : {CoreFoundation:[],libsystem_c.dylib:[abort() called],libc++abi.dylib:[]}, And below it, a lastExceptionBacktrace: lastExceptionBacktrace : [{imageOffset:626780,imageIndex:5},{imageOffset:89940,imageIndex:4},{imageOffset:394752,imageIndex:9},{imageOffset:491384....} MyBeautifulApp-2021-10-15-144552.txt Not sure if this is a crash caused by my app?
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710
Oct ’21
crash reports
Hi,My app is in Test Flight release at this time.In iTunes Connect, under Testflight Builds, several of the releases show a nonzero number of crash reports.However, I'm unable to access any of these crash reports in Xcode. When I select one of the builds that should have crash reports, the Organizer window says No Crashes.Why is this happening? Is there a way to access the crash reports directly through iTunes Connect?Frank
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409
Jul ’16