Object 0x10bee2ff0 of class _DictionaryStorage deallocated with non-zero retain count 2

HI!

Trying to figure out a particularly odd crash report (via crashlytics).

Crashed: com.apple.main-thread
0  libsystem_kernel.dylib         0x7558 __pthread_kill + 8
1  libsystem_pthread.dylib        0x7118 pthread_kill + 268
2  libsystem_c.dylib              0x1d178 abort + 180
3  libswiftCore.dylib             0x3b93a8 swift::fatalError(unsigned int, char const*, ...) + 134
4  libswiftCore.dylib             0x3b93c8 swift::warningv(unsigned int, char const*, char*) + 30
5  libswiftCore.dylib             0x3bdfd8 swift_deallocPartialClassInstance + 190
6  libswiftCore.dylib             0x3bde28 _swift_release_dealloc + 56
7  libswiftCore.dylib             0x3bec4c bool swift::RefCounts<swift::RefCountBitsT<(swift::RefCountInlinedness)1> >::doDecrementSlow<(swift::PerformDeinit)1>(swift::RefCountBitsT<(swift::RefCountInlinedness)1>, unsigned int) + 132
8  PSStore                        0xab8de0 ThankYouViewController.viewCleanup() + 32 (TwoPhaseCommitHelper.swift:32)

Complete stackTrace here

com.predictspring.pos_issue_63a57f567d9db225552c2cd24d915564_crash_session_7dfdc13304324dd39f1e60b48d20a6af_DNE_0_v2_stacktrace.txt

The stack trace line that refers to our code points to a specific implementation of a ThreadedDictionary where we are removing all the objects inside the internal storage:

We have not been able to reproduce this crash, however we are seeing multiple instances in our crash reports for it (All instances happening in iPadOS + 16.4.1 devices).

Is there anything relevant to take a look in the first 7 frames of the crash report to understand what could be the issue?

While researching on this, we identified a post with a very similar stacktrace entries: https://developer.apple.com/forums/thread/729196?login=true&page=1#752337022

We are not using GC or Unity, however the first entries in the stack trace look very similar.

Rgds!

Up vote post of Carson44 Down vote post of Carson44
436 views
Posted by
Carson44
Reply
Add a Comment

Replies

Do you have an Apple crash report for this? If so, please post the whole thing. See Posting a Crash Report for advice on how to do that.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Posted by
eskimo
Up vote reply of eskimo Down vote reply of eskimo
Add a Comment

Hi!

Unfortunately we don't have an Apple crash report, crashlytics stack trace is the only information we have for this crash. :(

Posted by
Carson44
Up vote reply of Carson44 Down vote reply of Carson44
Add a Comment

Hello, we are seeing occurrences of the same kind of crash while working with collection in Swift.

crash stack of the crash is as below:

0    libsystem_kernel.dylib                   0x1d810e974     __pthread_kill + 8
1    libsystem_c.dylib                        0x197b57b80     abort + 179
2    libswiftCore.dylib                       0x18e85a690     swift::fatalErrorv(unsigned int, char const*, char*) + 135
3    libswiftCore.dylib                       0x18e85a6b0     swift::fatalError(unsigned int, char const*, ...) + 31
4    libswiftCore.dylib                       0x18e85f4dc     swift_deallocClassInstance + 307
5    libswiftCore.dylib                       0x18e85f36c     _swift_release_dealloc + 55
6    libswiftCore.dylib                       0x18e860488     bool swift::RefCounts<swift::RefCountBitsT<(swift::RefCountInlinedness)1> >::doDecrementSlow<(swift::PerformDeinit)1>(swift::RefCountBitsT<(swift::RefCountInlinedness)1>, unsigned int) + 135

crash message:

# Cause: Object 0x12d4e8000 of class _DictionaryStorage deallocated with non-zero retain count 3. This object's deinit, or something called from it, may have created a strong reference to self which outlived deinit, resulting in a dangling reference.
Posted by
flopij
Up vote reply of flopij Down vote reply of flopij
Add a Comment

Again, I need a full Apple crash report to offer an opinion about this.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"

Posted by
eskimo
Up vote reply of eskimo Down vote reply of eskimo
Add a Comment

I'm having the same issue. And it started in a line that doesn't changed in the last update. I'm attaching the crashpoint that includes some crashes. Could you help us?

Posted by
NicolaiBure
Up vote reply of NicolaiBure Down vote reply of NicolaiBure
Add a Comment

I add the attachment. Sorry I couldn't add the report. I give you a WeTransfer Link https://we.tl/t-VHOkQIs6TO

Posted by
NicolaiBure
Up vote reply of NicolaiBure Down vote reply of NicolaiBure
Add a Comment