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

Question

Carson44 OP

Created Mar ’24

Replies 6

Boosts 0

Views 1.2k

Participants 4

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)

Screen Shot 2024-03-19 at 15.10.17 PM.png

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:

Screen Shot 2024-03-19 at 15.00.41 PM.png

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!

Boost

Answer 1

DTS Engineer OP

Apple

Mar ’24

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"

0

Answer 2

Carson44 OP

Mar ’24

Hi!

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

0

Answer 3

flopij OP

Mar ’24

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.

0

Answer 4

DTS Engineer OP

Apple

Mar ’24

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"

0

Answer 5

NicolaiBure OP

Apr ’24

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?

0

Answer 6

NicolaiBure OP

Apr ’24

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

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