Quickstart-unity: 6.15.0 - Unity constantly crashes when entering play mode for the second time

[eladleb]

Unity editor version: 2019.3.15
Firebase Unity SDK version: 6.15.0
Source you installed the SDK: Unity Package Manager.
Firebase plugins in use: everything except firestore
Additional SDKs you are using: Facebook & AdMob
Platform you are using the Unity editor on Mac
Platform you are targeting: iOS, Android
Scripting Runtime: IL2CPP

Please describe the issue here:

After updating to 6.15.0 I started seeing this warning when I enter play mode for the 1st time:
Future with handle 1 still exists though its backing API is being deleted

After this warning is shown, the next time I enter play mode, unity crashes :(

Please answer the following, if applicable:

Have you been able to reproduce this issue with just the Firebase Unity quickstarts (this GitHub project)? - I didn't try.

What's the issue repro rate? 100% of the time.

---

Future with handle 1 still exists though its backing API 0xC624DCD0 is being deleted. Please call Future::Release() before deleting the backing API.
UnityEngine.Debug:LogWarning(Object)
Firebase.Platform.FirebaseLogger:LogMessage(PlatformLogLevel, String) (at Z:/tmp/tmp.la3ltWQdKA/firebase/app/client/unity/src/Unity/FirebaseLogger.cs:92)
Firebase.LogUtil:LogMessage(LogLevel, String) (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/LogUtil.cs:68)
Firebase.LogUtil:LogMessageFromCallback(LogLevel, String) (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/LogUtil.cs:76)
Firebase.AppUtilPINVOKE:PollCallbacks()
Firebase.AppUtil:PollCallbacks() (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/AppUtil.cs:32)
Firebase.Platform.FirebaseAppUtils:PollCallbacks() (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/FirebaseAppUtils.cs:33)
Firebase.Platform.FirebaseHandler:Update() (at Z:/tmp/tmp.la3ltWQdKA/firebase/app/client/unity/src/Unity/FirebaseHandler.cs:205)
Firebase.Platform.FirebaseMonoBehaviour:Update() (at Z:/tmp/tmp.la3ltWQdKA/firebase/app/client/unity/src/Unity/FirebaseMonoBehaviour.cs:45)

---

Another similar log:

Future with handle 1 still exists though its backing API 0x43313BF0 is being deleted. Please call Future::Release() before deleting the backing API.
UnityEngine.Debug:LogWarning(Object)
Firebase.Platform.FirebaseLogger:LogMessage(PlatformLogLevel, String) (at Z:/tmp/tmp.la3ltWQdKA/firebase/app/client/unity/src/Unity/FirebaseLogger.cs:92)
Firebase.LogUtil:LogMessage(LogLevel, String) (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/LogUtil.cs:68)
Firebase.LogUtil:LogMessageFromCallback(LogLevel, String) (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/LogUtil.cs:76)
Firebase.AppUtilPINVOKE:PollCallbacks()
Firebase.AppUtil:PollCallbacks() (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/AppUtil.cs:32)
Firebase.Platform.FirebaseAppUtils:PollCallbacks() (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/FirebaseAppUtils.cs:33)
Firebase.Platform.FirebaseHandler:Update() (at Z:/tmp/tmp.la3ltWQdKA/firebase/app/client/unity/src/Unity/FirebaseHandler.cs:205)
Firebase.Platform.FirebaseEditorDispatcher:Update() (at Z:/tmp/tmp.la3ltWQdKA/firebase/app/client/unity/src/Unity/FirebaseEditorDispatcher.cs:102)
UnityEditor.EditorApplication:Internal_CallUpdateFunctions() (at /Users/builduser/buildslave/unity/build/Editor/Mono/EditorApplication.cs:310)

[google-oss-bot]

This issue does not seem to follow the issue template. Make sure you provide all the required information.

[npicouet]

I'm having this issue as well.
Editor log is spamming this over and over:
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.3.13f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle

EDIT: Not sure on the exact cause, but yeah its completely unusable. Crashes every time code compiles after hitting play once in editor.

[brianchasalow]

Seeing the same crash here as of 6.15.0, totally unusable. need to roll back to .14.
Similar crash.
Future with handle 1 still exists though its backing API 0x40F2420 is being deleted. Please call Future::Release() before deleting the backing API.

@mikehaney24

Seems to fire on:
DatabaseReference userStatusDatabaseRef = FirebaseDatabase.DefaultInstance.GetReference("/status/" + uid);

Future with handle 1 still exists though its backing API 0x40F2420 is being deleted. Please call Future::Release() before deleting the backing API.
UnityEngine.Debug:LogWarning(Object)
Firebase.Platform.FirebaseLogger:LogMessage(PlatformLogLevel, String) (at Z:/tmp/tmp.la3ltWQdKA/firebase/app/client/unity/src/Unity/FirebaseLogger.cs:92)
Firebase.LogUtil:LogMessage(LogLevel, String) (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/LogUtil.cs:68)
Firebase.LogUtil:LogMessageFromCallback(LogLevel, String) (at Z:/tmp/tmp.txs8ldQ514/firebase/app/client/unity/proxy/LogUtil.cs:76)
Firebase.Database.Internal.DatabaseInternalPINVOKE:InternalFirebaseDatabase_GetReference__SWIG_1(HandleRef, String)
Firebase.Database.Internal.InternalFirebaseDatabase:GetReference(String) (at Z:/tmp/tmp.DJxfWWKRuH/firebase/database/client/unity/proxy/InternalFirebaseDatabase.cs:92)
Firebase.Database.FirebaseDatabase:GetReference(String) (at Z:/tmp/tmp.DJxfWWKRuH/firebase/database/client/unity/proxy/FirebaseDatabase.cs:182)
FirebaseConnector:CheckOnlineStatus(Boolean) (at Assets/LightDiver/Firebase/FirebaseConnector.cs:1016)

[eladleb]

We also rolled back to 6.14.1 until someone from firebase could provide us with some guidance :(

[mohamad-al-amaary]

There goes my excitement for the unity cleanup crashfix for ios watchdog transgression issue rolled out with this version, meh

[mohamad-al-amaary]

Just tested a little more, it's not about GetReference for my specific project as I didn't use a database for this one. I use Auth, Remote Config, Analytics only for this and after debugging it seems it's only about Auth module. I use similar code to the docs and only use Anonymous authentication, hope it helps you solve it :) If the person above me had an issue with GetReference, I'm afraid it might also affect database module, did not test in my other projects.

Edit: Doesn't happen as often on Windows as on Mac

[aidanwolf]

Same exact issue after upgrading to 6.15.

Found this in the crash report, seems to be Firebase Auth related:
Thread 57 Crashed:: Finalizer 0 libsystem_kernel.dylib 0x00007fff6f81e33a __pthread_kill + 10 1 libsystem_pthread.dylib 0x00007fff6f8dae60 pthread_kill + 430 2 libsystem_c.dylib 0x00007fff6f7a5808 abort + 120 3 com.unity3d.UnityEditor5.x 0x00000001065f32de HandleSignal(int, __siginfo*, void*) + 62 4 libmonobdwgc-2.0.dylib 0x0000000142e7a16d mono_chain_signal + 79 5 libmonobdwgc-2.0.dylib 0x0000000142d4b3ef mono_sigsegv_signal_handler + 414 6 libsystem_platform.dylib 0x00007fff6f8cf5fd _sigtramp + 29 7 ??? 000000000000000000 0 + 0 8 FirebaseCppApp-6_15_0.bundle 0x00000001648fd8de firebase::FutureBackingData::~FutureBackingData() + 110 9 FirebaseCppApp-6_15_0.bundle 0x00000001648fdc5f firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl() + 367 10 FirebaseCppApp-6_15_0.bundle 0x000000016421d364 firebase::auth::Auth::DeleteInternal() + 516 11 FirebaseCppApp-6_15_0.bundle 0x000000016421d429 firebase::auth::Auth::~Auth() + 9 12 FirebaseCppApp-6_15_0.bundle 0x00000001640f0423 firebase::CppInstanceManager<firebase::auth::Auth>::ReleaseReference(firebase::auth::Auth*) + 323 13 ??? 0x000000016632f18b 0 + 6009581963 14 ??? 0x000000016632c883 0 + 6009571459

[EricBatlle]

Similar problem using RealtimeDatabase in Unity 2019.3 on a Xiaomi Pocophone.

public void OnDatabaseStuff()
    {
        database.GetReference("users/Eric").GetValueAsync().ContinueWithOnMainThread(task =>
        {
            if (task.IsFaulted)
            {
                // Handle the error...
            }
            else if (task.IsCompleted)
            {
                DataSnapshot snapshot = task.Result;
                // Do something with snapshot...
                dataShot = snapshot;
                foreach (var childShot in dataShot.Children)
                {
                    Debug.Log(childShot.Value.ToString());
                }
                Dictionary<string, object> child = dataShot.Value as Dictionary<string, object>;
                Debug.Log(child["Eric"].ToString());
            }
        });
    }

I was thinking that changing from ContinueWith to ContinueWithOnMainThread will solve it, but it doesn't. Still showing the warning, any idea?

[shlighter]

Similiar issue SDK 6.15.0 Unity 2019.3.13f1 every time SetValueAsync is called . Rolling back to 6.14
Future with handle 1 still exists though its backing API 0x3FDCABE0 is being deleted. Please call Future::Release() before deleting the backing API.
UnityEngine.Debug:LogWarning(Object)

[copypasteearth]

I'm having the same issue only using Auth 6.15

public class menu : MonoBehaviour
{
        public GameObject signInButton;
        public GameObject registerPanel;
        public GameObject registerInputPanel;
        public InputField registerEmailText;
        public InputField registerPasswordText;
        public GameObject signinPanel;
        public InputField signinEmail;
        public InputField signinPassword;
        FirebaseApp app;
        Firebase.Auth.FirebaseAuth auth;
        protected Firebase.Auth.FirebaseAuth otherAuth;
        Firebase.Auth.FirebaseUser user;
        public bool isSignedIn = false;
        private Firebase.AppOptions otherAuthOptions = new Firebase.AppOptions {
                ApiKey = "",
                AppId = "",
                ProjectId = ""
        };
        // Start is called before the first frame update
        void Start()
    {
                //what is going

                Firebase.FirebaseApp.CheckAndFixDependenciesAsync ().ContinueWithOnMainThread (task => {
                        var dependencyStatus = task.Result;
                        if (dependencyStatus == Firebase.DependencyStatus.Available) {
                                // Create and hold a reference to your FirebaseApp,
                                // where app is a Firebase.FirebaseApp property of your application class.
                                //Firebase.AppOptions ops = new Firebase.AppOptions ();
                                //app = Firebase.FirebaseApp.Create (ops);
                                InitializeFirebase ();
                                //app = Firebase.FirebaseApp.DefaultInstance;

                                print ("success with firebase");

                                // Set a flag here to indicate whether Firebase is ready to use by your app.
                        } else {
                                UnityEngine.Debug.LogError (System.String.Format (
                                  "Could not resolve all Firebase dependencies: {0}", dependencyStatus));
                                // Firebase Unity SDK is not safe to use here.
                        }
                });
        }

    // Update is called once per frame
    void Update()
    {

    }
        public void registerClicked ()
    {
                registerPanel.SetActive (false);
                registerInputPanel.SetActive (true);
    }
        public void actualSignIn ()
    {
                registerPanel.SetActive (false);
                signinPanel.SetActive (true);
        }
        public void signInButtonClicked ()
    {
        if (!isSignedIn) {
                        registerPanel.SetActive (true);
        } else {
                        auth.SignOut ();
                        print ("signed out");
                }

    }
        public void doSignIn ()
    {
                signinPanel.SetActive (false);
                auth.SignInWithEmailAndPasswordAsync (signinEmail.text, signinPassword.text).ContinueWith (task => {
                        if (task.IsCanceled) {
                                Debug.LogError ("SignInWithEmailAndPasswordAsync was canceled.");
                                return;
                        }
                        if (task.IsFaulted) {
                                Debug.LogError ("SignInWithEmailAndPasswordAsync encountered an error: " + task.Exception);
                                return;
                        }

                        Firebase.Auth.FirebaseUser newUser = task.Result;
                        Debug.LogFormat ("User signed in successfully: {0} ({1})",
                            newUser.DisplayName, newUser.UserId);
                });
        }
        public void createAccount ()
    {
                registerInputPanel.SetActive (false);
                print ("email: " + registerEmailText.text + "     password: " + registerPasswordText.text);
                auth.CreateUserWithEmailAndPasswordAsync (registerEmailText.text, registerPasswordText.text).ContinueWith (task => {
                        if (task.IsCanceled) {
                                Debug.LogError ("CreateUserWithEmailAndPasswordAsync was canceled.");
                                return;
                        }
                        if (task.IsFaulted) {
                                Debug.LogError ("CreateUserWithEmailAndPasswordAsync encountered an error: " + task.Exception);
                                return;
                        }

                        // Firebase user has been created.
                        Firebase.Auth.FirebaseUser newUser = task.Result;
                        Debug.LogFormat ("Firebase user created successfully: {0} ({1})",
                            newUser.DisplayName, newUser.UserId);
                });
        }
        void OnDestroy ()
        {
                print ("destroy");

                auth.StateChanged -= AuthStateChanged;

                auth = null;
                if (otherAuth != null) {
                        otherAuth.StateChanged -= AuthStateChanged;

                        otherAuth = null;
                }

        }
        void InitializeFirebase ()
        {
                print ("Setting up Firebase Auth");
                auth = Firebase.Auth.FirebaseAuth.DefaultInstance;
                auth.StateChanged += AuthStateChanged;

                // Specify valid options to construct a secondary authentication object.
                if (otherAuthOptions != null &&
                    !(String.IsNullOrEmpty (otherAuthOptions.ApiKey) ||
                      String.IsNullOrEmpty (otherAuthOptions.AppId) ||
                      String.IsNullOrEmpty (otherAuthOptions.ProjectId))) {
                        try {
                                otherAuth = Firebase.Auth.FirebaseAuth.GetAuth (Firebase.FirebaseApp.Create (
                                  otherAuthOptions, "Secondary"));
                                otherAuth.StateChanged += AuthStateChanged;

                        } catch (Exception) {
                                print ("ERROR: Failed to initialize secondary authentication object.");
                        }
                }
                AuthStateChanged (this, null);
        }

    private void OnApplicationQuit ()
    {
                print ("app quiting");
                //app.Dispose ();
                //FirebaseApp.DefaultInstance.Dispose ();
        }

    void AuthStateChanged (object sender, System.EventArgs eventArgs)
        {
                if (auth.CurrentUser != user) {
                        bool signedIn = user != auth.CurrentUser && auth.CurrentUser != null;
                        if (!signedIn && user != null) {
                                print ("Signed out " + user.UserId);
                        }
                        user = auth.CurrentUser;
                        if (signedIn) {
                                isSignedIn = true;
                                signInButton.transform.Find ("Text").gameObject.GetComponent<Text> ().text = "Sign Out";
                                print ("Signed in " + user.UserId);

                        }
                }
        }

[cynthiajoan]

Thanks all for providing all the details. We are working on a fix and will post update when there is progress.

[jonahgoldsaito]

I'm hitting the same issue on 2nd editor run, which is unfortunate as upgrading to 6.15.0 from 6.14.1 is the only way I was able to solve a build error for iOS.

_Not sure if it's related but just in case it is:_
I opened the project (2019.3.8 & 6.15.0), and though I didn't build in Editor or to device, after about 30 minutes Unity suddenly crashed while I had another app in focus. Pasting the OSX crash log in this Google doc in case it highlights anything.

[seekinglambda]

Also hitting the same issue (6.15.0 & 2019.3.6/2019.4.0). Seems related to garbage collection of the Auth DefaultInstance in my case.

The only thing required for me to hit it, is to have a single line, running in a script in a GameObject on the scene:
auth = FirebaseAuth.DefaultInstance;

I have tried variants like having this line within CheckAndFixDependenciesAsync, having "auth" be a member variable instead of local, having it be a static member variable, ...

The behavior is that it works fine on the first run (although the editor logs show a lot of "Fallback handler couldn't load ..." but I think I have ruled out this being related).

On the second run, it always instantly crashes with the following:

0 0x00000182781d10 in firebase::(anonymous namespace)::FutureProxyManager::UnregisterCallback(void*)

1 0x0000018277f8de in firebase::FutureBackingData::~FutureBackingData()

2 0x0000018277fc5f in firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl()

3 0x0000018209f364 in firebase::auth::Auth::DeleteInternal()

4 0x0000018209f429 in firebase::auth::Auth::~Auth()

5 0x00000181f72423 in firebase::CppInstanceManager::ReleaseReference(firebase::auth::Auth*)

6 0x00000164f0430b in (wrapper managed-to-native) Firebase.Auth.AuthUtilPINVOKE:FirebaseAuth_ReleaseReferenceInternal (System.Runtime.InteropServices.HandleRef) {0x7fed07ec3170} + 0x11b (0x164f041f0 0x164f04415) [0x167535c80 - Unity Child Domain]

7 0x00000164f01863 in Firebase.Auth.FirebaseAuth:Dispose () {0x7fed06702d90} + 0x73 (0x164f017f0 0x164f0188e) [0x167535c80 - Unity Child Domain]

8 0x000001628a375c in (wrapper runtime-invoke) object:runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr) {0x7fecff2cf508} + 0x16c (0x1628a35f0 0x1628a3965) [0x167535c80 - Unity Child Domain]

9 0x000001480e678b in mono_gc_run_finalize

10 0x000001480e83d1 in finalizer_thread

11 0x000001480aef44 in start_wrapper

12 0x00000148122e22 in GC_inner_start_routine

13 0x00000148122db7 in GC_start_routine

14 0x007fff6945ae65 in _pthread_start

15 0x007fff6945683b in thread_start

Curiously, out of maybe 100 different attempts, there was one series of plays where the crash did not happen. This was after I added DontDestroyOnLoad to my GameObject that contains the line. However, at a later point, I tried checking "single instance" as well, and after that the crash immediately returned. Now I can't replicate the working setup anymore.

[lozan]

I am also having the same issue. Every second run the editor crashes.
Running on Ubuntu 20.04 (x86_64), I tried with Unity 2019.4.0 and with 2019.3.15. I also tried installing Firebase through Package Manager and manually, but it made no difference at all.
I am only using Firebase Auth and I tried with a small test app which does only anonymous authentication and othing else.
Here's the tail of the editor log (the relevant part):

Reloading assemblies for play mode.
Begin MonoManager ReloadAssembly
Fallback handler could not load library /home/user/Applications/unity/editors/2019.4.0f1/Editor/Data/Mono/lib/libAssets/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.so
Fallback handler could not load library /home/user/Applications/unity/editors/2019.4.0f1/Editor/Data/Mono/lib/libAssets/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.so
Fallback handler could not load library /home/user/Applications/unity/editors/2019.4.0f1/Editor/Data/Mono/lib/libAssets/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.so
Fallback handler could not load library /home/user/Applications/unity/editors/2019.4.0f1/Editor/Data/Mono/lib/libAssets/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.so
Fallback handler could not load library /home/user/Applications/unity/editors/2019.4.0f1/Editor/Data/Mono/lib/libAssets/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.so
Fallback handler could not load library /home/user/Applications/unity/editors/2019.4.0f1/Editor/Data/Mono/lib/libAssets/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.so
Caught fatal signal - signo:11 code:128 errno:0 addr:(nil)
Obtained 16 stack frames.
#0  0x007f5efa4ce3c0 in funlockfile
#1  0x007f5d928222d2 in firebase::CleanupNotifier::UnregisterObject(void*)
#2  0x007f5d92827a17 in firebase::(anonymous namespace)::FutureProxyManager::UnregisterCallback(void*)
#3  0x007f5d928250f2 in firebase::FutureBackingData::~FutureBackingData()
#4  0x007f5d92825459 in firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl()
#5  0x007f5d921ae680 in firebase::auth::Auth::DeleteInternal()
#6  0x007f5d92068019 in Firebase_Auth_CSharp_FirebaseAuth_ReleaseReferenceInternal
#7  0x00000041dd8cdb in (wrapper managed-to-native) Firebase.Auth.AuthUtilPINVOKE:FirebaseAuth_ReleaseReferenceInternal (System.Runtime.InteropServices.HandleRef)
#8  0x00000041dd64b8 in Firebase.Auth.FirebaseAuth:Dispose ()
#9  0x00000041ef3c75 in (wrapper runtime-invoke) object:runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr)
#10 0x007f5dcb7525ef in mono_callspec_cleanup
#11 0x00000000000001 in (Unknown)
#12 0x00000041dd64b8 in Firebase.Auth.FirebaseAuth:Dispose ()
#13 0x00000041ef3c75 in (wrapper runtime-invoke) object:runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr)
#14 0x007f5dcb7525ef in mono_callspec_cleanup
#15 0x007f5dcbaa1c00 in (Unknown)
Launching bug reporter
[Unity Package Manager (Upm)]
Parent process [143949] was terminated

I know the lines with "Fallback handler could not load library" are another bug, but somehow that's not causing the crash. Those lines are in the log even if I run the application once, but the Editor doesn't crash because of that. However, the issues may be related (with the locking).

For the time being, I rolled back to 6.14.1, which doesn't have this bug, but I hope this will be resolved soon

[keskin]

Also hitting the same issue (6.15.0 & 2019.3.6/2019.4.0). Seems related to garbage collection of the Auth DefaultInstance in my case.

The only thing required for me to hit it, is to have a single line, running in a script in a GameObject on the scene:
auth = FirebaseAuth.DefaultInstance;

I have tried variants like having this line within CheckAndFixDependenciesAsync, having "auth" be a member variable instead of local, having it be a static member variable, ...

The behavior is that it works fine on the first run (although the editor logs show a lot of "Fallback handler couldn't load ..." but I think I have ruled out this being related).

On the second run, it always instantly crashes with the following:

0 0x00000182781d10 in firebase::(anonymous namespace)::FutureProxyManager::UnregisterCallback(void*)

1 0x0000018277f8de in firebase::FutureBackingData::~FutureBackingData()

2 0x0000018277fc5f in firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl()

3 0x0000018209f364 in firebase::auth::Auth::DeleteInternal()

4 0x0000018209f429 in firebase::auth::Auth::~Auth()

5 0x00000181f72423 in firebase::CppInstanceManagerfirebase::auth::Auth::ReleaseReference(firebase::auth::Auth*)

6 0x00000164f0430b in (wrapper managed-to-native) Firebase.Auth.AuthUtilPINVOKE:FirebaseAuth_ReleaseReferenceInternal (System.Runtime.InteropServices.HandleRef) {0x7fed07ec3170} + 0x11b (0x164f041f0 0x164f04415) [0x167535c80 - Unity Child Domain]

7 0x00000164f01863 in Firebase.Auth.FirebaseAuth:Dispose () {0x7fed06702d90} + 0x73 (0x164f017f0 0x164f0188e) [0x167535c80 - Unity Child Domain]

8 0x000001628a375c in (wrapper runtime-invoke) object:runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr) {0x7fecff2cf508} + 0x16c (0x1628a35f0 0x1628a3965) [0x167535c80 - Unity Child Domain]

9 0x000001480e678b in mono_gc_run_finalize

10 0x000001480e83d1 in finalizer_thread

11 0x000001480aef44 in start_wrapper

12 0x00000148122e22 in GC_inner_start_routine

13 0x00000148122db7 in GC_start_routine

14 0x007fff6945ae65 in _pthread_start

15 0x007fff6945683b in thread_start

Curiously, out of maybe 100 different attempts, there was one series of plays where the crash did not happen. This was after I added DontDestroyOnLoad to my GameObject that contains the line. However, at a later point, I tried checking "single instance" as well, and after that the crash immediately returned. Now I can't replicate the working setup anymore.

in my case, this is the problem.
auth = FirebaseAuth.DefaultInstance;

[jonahgoldsaito]

Does 6.15 run in Editor successfully (multiple times) on anyone's system running 2019.3.8+, especially on OSX? The dev team, for example–it must have run and passed tests, and if so, perhaps there's some setup we can replicate. I realize it may take a bit to track down the bug and have a stable release, but I'm also in a scenario where I can't roll back to 6.14.1, unfortunately.

I know the dev team must be running primarily on *nix, but y'all must be working from home a bunch now on MBPros, unless everything changed since I left. If so, any tips? I realize this thread is self selecting, so anyone for whom it works wouldn't be reading this, unless perhaps it's your job or you're incredibly good world developer citizens :)

Thanks!

[gurkankilic]

I have dealt with the same problem for the past 15 days. Unity was crashing when CheckAndFixDependenciesAsync was called a second time.

The tutorial below solved the problem.
https://spin.atomicobject.com/2020/06/09/firebase-unity-user-accounts/

Edit: Sorry, the same problem reappears. Not working.

[Blazerker]

I have the same issue. Have an issue on 2019.4.0 and 2019.3.x.
I've tracked it down to the auth.StateChanged += AuthStateChanged; callback. I've also tried unsubscribing it before the app closes, but that also doesn't work.

Process:               Unity [51548]
Path:                  /Applications/Unity/*/Unity.app/Contents/MacOS/Unity
Identifier:            com.unity3d.UnityEditor5.x
Version:               Unity version 2019.4.0f1 (2019.4.0f1)
Code Type:             X86-64 (Native)
Parent Process:        Unity Hub [566]
Responsible:           Unity Hub [566]
User ID:               501

Date/Time:             2020-06-21 12:28:47.330 +0200
OS Version:            Mac OS X 10.15.5 (19F101)
Report Version:        12
Bridge OS Version:     4.5 (17P5300)
Anonymous UUID:        AA1C1D97-B928-F6F0-99EB-36EBB990E6E5

Sleep/Wake UUID:       D1994F25-EF6B-4F00-A4B6-B921FC25792F

Time Awake Since Boot: 240000 seconds
Time Since Wake:       18000 seconds

System Integrity Protection: enabled

Crashed Thread:        68  Finalizer

Exception Type:        EXC_BAD_ACCESS (SIGABRT)
Exception Codes:       EXC_I386_GPFLT
Exception Note:        EXC_CORPSE_NOTIFY

Application Specific Information:
abort() called

Reloading assemblies for play mode.
Begin MonoManager ReloadAssembly
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle.dylib
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle.so
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle.dylib
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle.so
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle.dylib
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle.so
Fallback handler could not load library /Applications/Unity/Hub/Editor/2019.4.0f1/Unity.app/Contents/Frameworks/Mono/lib/libPackages/com.google.firebase.app/Firebase/Plugins/x86_64/FirebaseCppApp-6_15_0.bundle
Obtained 16 stack frames.
#0  0x0000017fdebd10 in firebase::(anonymous namespace)::FutureProxyManager::UnregisterCallback(void*)
#1  0x0000017fde98de in firebase::FutureBackingData::~FutureBackingData()
#2  0x0000017fde9c5f in firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl()
#3  0x0000017f709364 in firebase::auth::Auth::DeleteInternal()
#4  0x0000017f709429 in firebase::auth::Auth::~Auth()
#5  0x0000017f5dc423 in firebase::CppInstanceManager<firebase::auth::Auth>::ReleaseReference(firebase::auth::Auth*)
#6  0x000001616f5e6b in  (wrapper managed-to-native) Firebase.Auth.AuthUtilPINVOKE:FirebaseAuth_ReleaseReferenceInternal (System.Runtime.InteropServices.HandleRef) {0x7fefd8024928} + 0x11b (0x1616f5d50 0x1616f5f75) [0x184406c80 - Unity Child Domain]
#7  0x000001616f33c3 in  Firebase.Auth.FirebaseAuth:Dispose () {0x7fefcac85390} + 0x73 (0x1616f3350 0x1616f33ee) [0x184406c80 - Unity Child Domain]
#8  0x00000164e1275c in  (wrapper runtime-invoke) object:runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr) {0x7fefd1933708} + 0x16c (0x164e125f0 0x164e12965) [0x184406c80 - Unity Child Domain]
#9  0x000001438f678b in mono_gc_run_finalize
#10 0x000001438f83d1 in finalizer_thread
#11 0x000001438bef44 in start_wrapper
#12 0x00000143932e22 in GC_inner_start_routine
#13 0x00000143932db7 in GC_start_routine
#14 0x007fff69f89109 in _pthread_start
#15 0x007fff69f84b8b in thread_start
Launching bug reporter
WARNING: Future with handle 1 still exists though its backing API 0xC887C368 is being deleted. Please call Future::Release() before deleting the backing API.
WARNING: Future with handle 2 still exists though its backing API 0xC887C368 is being deleted. Please call Future::Release() before deleting the backing API.
WARNING: Future with handle 2 still exists though its backing API 0xC887BDB0 is being deleted. Please call Future::Release() before deleting the backing API.
WARNING: Future with handle 3 still exists though its backing API 0xC887BDB0 is being deleted. Please call Future::Release() before deleting the backing API.
[Unity Package Manager (Upm)]
Parent process [54276] was terminated
QObject: Cannot create children for a parent that is in a different thread.
(Parent is QObject(0x7f83cbf4a300), parent's thread is QThread(0x7f83cbc0ef20), current thread is Thread(0x7f83ccbb9460)

[eladleb]

Hey @cynthiajoan

Thanks all for providing all the details. We are working on a fix and will post update when there is progress.

Any ETA on resolving this issue..? Or are there any workarounds aside from downgrading?

[Chris97e]

I also have the same issue, Unity editor crashes when I enter in play mode for second time. This only happens if I register a user with auth Firebase.

[matiasticbits]

I also have this issue using Unity 2018.4.23f1 and Firebase 6.15.0.

```
Stacktrace:

at <0xffffffff>
at (wrapper managed-to-native) Firebase.Auth.AuthUtilPINVOKE.FirebaseAuth_ReleaseReferenceInternal (System.Runtime.InteropServices.HandleRef) [0x00010] in :0
at Firebase.Auth.FirebaseAuth.ReleaseReferenceInternal (Firebase.Auth.FirebaseAuth) [0x00000] in Z:\tmp\tmp.poUq23PLco\firebase\auth\client\unity\proxy\FirebaseAuth.cs:720
at Firebase.Auth.FirebaseAuth.DisposeInternal () [0x000fc] in Z:\tmp\tmp.poUq23PLco\firebase\auth\client\unity\proxy\FirebaseAuth.cs:240
at Firebase.Auth.FirebaseAuth.Dispose () [0x00000] in Z:\tmp\tmp.poUq23PLco\firebase\auth\client\unity\proxy\FirebaseAuth.cs:105
at Firebase.Auth.FirebaseAuth.OnAppDisposed (object,System.EventArgs) [0x00000] in Z:\tmp\tmp.poUq23PLco\firebase\auth\client\unity\proxy\FirebaseAuth.cs:199
at Firebase.FirebaseApp.Dispose () [0x0000b] in Z:\tmp\tmp.txs8ldQ514\firebase\app\client\unity\proxy\FirebaseApp.cs:53
at Firebase.FirebaseApp.Finalize () [0x00000] in Z:\tmp\tmp.txs8ldQ514\firebase\app\client\unity\proxy\FirebaseApp.cs:47
at (wrapper runtime-invoke) object.runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr) [0x0001f] in :0```

[mmvlad]

Unity 2019.2.19f1
Firebase 6.15

0 0x00000175385d10 in firebase::(anonymous namespace)::FutureProxyManager::UnregisterCallback(void*)

1 0x000001753838de in firebase::FutureBackingData::~FutureBackingData()

2 0x00000175383c5f in firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl()

3 0x00000174ca3364 in firebase::auth::Auth::DeleteInternal()

4 0x00000174ca3429 in firebase::auth::Auth::~Auth()

5 0x00000174b76423 in firebase::CppInstanceManager::ReleaseReference(firebase::auth::Auth*)

6 0x0000017707107b in (wrapper managed-to-native) Firebase.Auth.AuthUtilPINVOKE:FirebaseAuth_ReleaseReferenceInternal (System.Runtime.InteropServices.HandleRef) {0x7ffed4a46720} + 0x11b (0x177070f60 0x177071185) [0x141286000 - Unity Child Domain]

7 0x0000017706e8e3 in Firebase.Auth.FirebaseAuth:Dispose () {0x7ffed204a990} + 0x73 (0x17706e870 0x17706e90e) [0x141286000 - Unity Child Domain]

[alphabikram]

same here ... wasted more than 2 days on this bug :(

0 0x00000156d2bd10 in firebase::(anonymous namespace)::FutureProxyManager::UnregisterCallback(void*)

1 0x00000156d298de in firebase::FutureBackingData::~FutureBackingData()

2 0x00000156d29c5f in firebase::ReferenceCountedFutureImpl::~ReferenceCountedFutureImpl()

3 0x00000156649364 in firebase::auth::Auth::DeleteInternal()

4 0x00000156649429 in firebase::auth::Auth::~Auth()

5 0x0000015651c423 in firebase::CppInstanceManager::ReleaseReference(firebase::auth::Auth*)

6 0x0000015a6177db in (wrapper managed-to-native) Firebase.Auth.AuthUtilPINVOKE:FirebaseAuth_ReleaseReferenceInternal (System.Runtime.InteropServices.HandleRef) {0x7fab7d142408} + 0x11b (0x15a6176c0 0x15a6178e5) [0x140805c80 - Unity Child Domain]

7 0x0000015a614ed3 in Firebase.Auth.FirebaseAuth:Dispose () {0x7fab7d542b90} + 0x73 (0x15a614e60 0x15a614efe) [0x140805c80 - Unity Child Domain]

8 0x0000014b0b63ec in (wrapper runtime-invoke) object:runtime_invoke_virtual_void__this__ (object,intptr,intptr,intptr) {0x7fab7daf0f58} + 0x16c (0x14b0b6280 0x14b0b65f5) [0x140805c80 - Unity Child Domain]

9 0x000001388a767b in mono_gc_run_finalize

10 0x000001388a92c1 in finalizer_thread

11 0x0000013886fd0d in start_wrapper

12 0x000001388e3d12 in GC_inner_start_routine

13 0x000001388e3ca7 in GC_start_routine

14 0x007fff72fdb109 in _pthread_start

15 0x007fff72fd6b8b in thread_start

Launching bug reporter

[jonahgoldsaito]

@cynthiajoan - If release schedules and juggling other features/fixes are holding this up, is there a patch we can implement in the meantime?

At the moment this is rendering my workflow super painful 😵

[Blazerker]

Rolling back to Version 6.14.1 in the Package Manager at least temporarily fixed the crash for me allowing me to continue working until this issue is resolved.

[matiasticbits]

I can reproduce this by selecting reimport to any script file after I had just finished play mode in Unity Editor. Also calling FirebaseApp.DefaultInstance.Dispose(); directly inside the game will make Unity Editor crash.

[amoswazana]

Any updates on this issue?
This is severely affecting our development workflow...

[a-maurice]

Hi all,

The Unity SDK has recently released 6.15.1, which we believe will fix this issue. Sorry for the delay, and if it does not solve the problem, please let us know.

[eladleb]

Awesome, after updating to 6.15.1 this no longer happens 👍