Crashes in Unity iOS - are they during exit from App?

Target Platforms Mobile
1

Hi guys,

I am wondering whether the following crashe we receive from users happen while user shut off the iOS app or whether this crash is a more crucial one:

Crashed: com.apple.main-thread
0  ourAppName                    0x100766ac0 UnityWebStream::Release() (UnityWebStream.cpp:70)
1  ourAppName                    0x1007669f0 CleanupUnityWebStreams(void*) (LinkedList.h:138)
2  ourAppName                    0x100b09fe8 RegisterRuntimeInitializeAndCleanup::ExecuteCleanup() (RegisterRuntimeInitializeAndCleanup.cpp:67)
3  ourAppName                    0x100b66244 RuntimeCleanup() (Player.cpp:589)
4  ourAppName                    0x1000897c4 -[UnityAppController applicationWillTerminate:] (UnityAppController.mm:401)
5  ourAppName                    0x10127c078 -[UIApplication(Swizzling) oneSignalApplicationWillTerminate:] (OneSignal.m:1471)
6  UIKit                          0x1973ae704 -[UIApplication _terminateWithStatus:] + 244
7  UIKit                          0x1975b07cc __102-[UIApplication _handleApplicationDeactivationWithScene:shouldForceExit:transitionContext:completion:]_block_invoke.2100 + 792
8  UIKit                          0x1975b3fdc _runAfterCACommitDeferredBlocks + 292
9  UIKit                          0x1975a5d50 _cleanUpAfterCAFlushAndRunDeferredBlocks + 560
10 UIKit                          0x1973150b4 _afterCACommitHandler + 168
11 CoreFoundation                 0x19141a0c0 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 32
12 CoreFoundation                 0x191417cf0 __CFRunLoopDoObservers + 372
13 CoreFoundation                 0x191418180 __CFRunLoopRun + 1024
14 CoreFoundation                 0x1913462b8 CFRunLoopRunSpecific + 444
15 GraphicsServices               0x192dfa198 GSEventRunModal + 180
16 UIKit                          0x19738d7fc -[UIApplication _run] + 684
17 UIKit                          0x197388534 UIApplicationMain + 208
18 ourAppName                    0x100074e6c main (main.mm:32)
19 libdispatch.dylib              0x1903295b8 (Missing)
2

I believe this bug was resolved in 5.3.6p8. Are you using an earlier version?

3

5.5.0f3.

I saw that issue. I also sent a bug report to Unity. It’s not clear if it was reopened or it’s a new one.

It’s clear this happen when the App terminates. The thing is I am not sure about the reason for the termination (is it because the user requested it or is it an iOS reason).

4

Do you have a “quit” option in your game? if not then obviously there’s no termination made by your users.

From what i remember - this looks very similar to the bug that was resolved (we had it in our game and it was fixed after upgrading to 5.3.6p8).

5

There is no termination by the user from within an iOS app anyways.

I am referring to the task being closed by the users which will also cause “applicationWillTerminate”.

6

You can always call Application.Quit() which will kill the game.
This looks like the same bug that was resolved - you should ping them to get a response whether this is a regression.

Maybe @Mantas-Puida can comment ?

7

I can also hit them on the head with a stick perhaps ;)? (I personally don’t regard the Quit() as a viable option in iOS)

Quite possible. I’ve opened a bug for this already. I’ll note them this might be connected to the previous issue.

Thanks for the input!

8

BTW - i just noticed that we’re still getting similar crashes, even after the upgrade to 5.3.6p8… maybe we should also report it.

9

Unless something has changed and I missed it, you should not use Application.Quit() on iOS because of Apple’s usability rules.