How can I symbolicate my iOS crash report?

Kim Strasser 1,201

I have uploaded my application to TestFlight but it always crashes when I start it on my iPad. I have tried to open the crash report file crashlog.crash in Xcode-->Window-->Devices and Simulators. But the crash report is not symbolicated.

How can I symbolicate my crash report? Is it necessary to do something in Visual Studio on Windows when I create the .ipa file to symbolicate the crash report or is it necessary to symbolicate the crash report somehow in Xcode on my Mac?

https://developer.apple.com/documentation/xcode/adding-identifiable-symbol-names-to-a-crash-report

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2 answers

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 34,556 Reputation points Microsoft Vendor

2025-01-16T06:53:28.95+00:00
Hello,

Is it necessary to do something in Visual Studio on Windows when I create the .ipa file to symbolicate the crash report or is it necessary to symbolicate the crash report somehow in Xcode on my Mac?

Yes, you could add the following to your csproj, this will let the methods be symbolicated instead of showing up as only memory addresses.

<PropertyGroup> <NoSymbolStrip>true</NoSymbolStrip> </PropertyGroup>

How can I symbolicate my crash report?

This is really an iOS question but not a MAUI question. Please see Symbolicate the crash report in Xcode.

For getting the dSYMs file, you can also follow the steps: open Xcode->Window->Organizer->your app ->Archives->select the archive->right-click and Show in Finder-> right-click the .xcarchive file-> Show Package Contents.

And I found a same issue reported at Apple developer forum- https://developer.apple.com/forums/thread/772077, you could add comments and post your concerns.

Best Regards,

Wenyan Zhang

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Kim Strasser 1,201 Reputation points

2025-01-16T23:17:13.96+00:00

I have downloaded my crash report from App Store Connect TestFlight. I don't know how to find the problem in the crashlog.crash file. I opened the file in TextEdit and I can see this in the crashlog file:

Exception Type: EXC_BAD_ACCESS (SIGILL) Exception Subtype: KERN_INVALID_ADDRESS at 0x000000016fb613b0 Exception Codes: 0x0000000000000001, 0x000000016fb613b0 VM Region Info: 0x16fb613b0 is not in any region. Bytes after previous region: 779490225 Bytes before following region: 404560 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL MALLOC_SMALL 141000000-141400000 [ 4096K] rw-/rwx SM=PRV
---> GAP OF 0x2e7c4000 BYTES Stack Guard 16fbc4000-16fbc8000 [ 16K] ---/rwx SM=NUL
Termination Reason: SIGNAL 4 Illegal instruction: 4 Terminating Process: MyAppiOS [445]

Wenyan Zhang (Shanghai Wicresoft Co,.Ltd.) 34,556 Reputation points Microsoft Vendor

2025-01-17T07:49:03.51+00:00

This log shows the memory addresses. You could add NoSymbolStrip property and archive again to see if you can get the symbolization crash. Also, you could follow the Apple's doc to symbolist the iOS crash report.

Kim Strasser 1,201 Reputation points

2025-01-18T10:02:49.07+00:00

<PropertyGroup> <NoSymbolStrip>true</NoSymbolStrip> </PropertyGroup>

I have added NoSymbolStrip to my .csproj file and uploaded a new build to TestFlight.

But it is still not symbolized. Here just a part of the crashlog.crash file:

Exception Type: EXC_BAD_ACCESS (SIGILL) Exception Subtype: KERN_INVALID_ADDRESS at 0x000000016fb613b0 Exception Codes: 0x0000000000000001, 0x000000016fb613b0 VM Region Info: 0x16fb613b0 is not in any region. Bytes after previous region: 779490225 Bytes before following region: 404560 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL MALLOC_SMALL 141000000-141400000 [ 4096K] rw-/rwx SM=PRV ---> GAP OF 0x2e7c4000 BYTES Stack Guard 16fbc4000-16fbc8000 [ 16K] ---/rwx SM=NUL Termination Reason: SIGNAL 4 Illegal instruction: 4 Terminating Process: MyAppName [445] Triggered by Thread: 0 Thread 0 name: Thread 0 name: Thread 0 Crashed: 0 MyAppName 0x00000001001f6964 0x10013c000 + 764260 1 MyAppName 0x000000010096b4d4 0x10013c000 + 8582356 2 MyAppName 0x0000000101823904 0x10013c000 + 24017156 3 MyAppName 0x0000000103a786dc 0x10013c000 + 60016348 4 QuartzCore 0x000000018a3081a4 CA::Display::DisplayLinkItem::dispatch_(CA::SignPost::Interval<(CA::SignPost::CAEventCode)835322056>&) + 48 (CADisplay.mm:6280) 5 QuartzCore 0x000000018a307b78 CA::Display::DisplayLink::dispatch_items(unsigned long long, unsigned long long, unsigned long long) + 884 (CADisplay.mm:5432) 6 QuartzCore 0x000000018a307710 CA::Display::DisplayLink::dispatch_deferred_display_links(unsigned int) + 352 (CADisplay.mm:4547) 7 UIKitCore 0x000000018affc704 _UIUpdateSequenceRun + 84 (_UIUpdateSequence.mm:136) 8 UIKitCore 0x000000018afff034 schedulerStepScheduledMainSection + 172 (_UIUpdateScheduler.m:1171) 9 UIKitCore 0x000000018affcc50 runloopSourceCallback + 92 (_UIUpdateScheduler.m:1334) 10 CoreFoundation 0x00000001887b7f3c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28 (CFRunLoop.c:1970) 11 CoreFoundation 0x00000001887b7ed0 __CFRunLoopDoSource0 + 176 (CFRunLoop.c:2014) 12 CoreFoundation 0x00000001887bab30 __CFRunLoopDoSources0 + 244 (CFRunLoop.c:2051) 13 CoreFoundation 0x00000001887b9d2c __CFRunLoopRun + 840 (CFRunLoop.c:2969) 14 CoreFoundation 0x000000018880c274 CFRunLoopRunSpecific + 588 (CFRunLoop.c:3434) 15 GraphicsServices 0x00000001d59554c0 GSEventRunModal + 164 (GSEvent.c:2196) 16 UIKitCore 0x000000018b34e77c -[UIApplication _run] + 816 (UIApplication.m:3846) 17 UIKitCore 0x000000018af74e64 UIApplicationMain + 340 (UIApplication.m:5503)

Xcode->Window->Organizer->your app ->Archives->select the archive->right-click and Show in Finder-> right-click the .xcarchive file-> Show Package Contents->dSYMs

What should I do with MyAppName.app.dSYM to symbolize the file crashlog.crash?
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Bruce (SqlWork.com) 69,501 Reputation points

2025-01-17T17:10:47.9466667+00:00

you want to ArchiveOnBuild on publish:

https://learn.microsoft.com/en-us/dotnet/maui/ios/deployment/publish-cli?view=net-maui-9.0

then in Xcode, open the Organizer window, then archives. you can than find the symbol file created by the build. then you can add symbols to the crash:

https://developer.apple.com/documentation/xcode/adding-identifiable-symbol-names-to-a-crash-report
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