Android build crashes on getting DocumentChange.Type

[Jack37]

[REQUIRED] Please fill in the following fields:

• Unity editor version: 2019.4.16f1
• Firebase Unity SDK version: 7.0.1
• Source you installed the SDK: Unity Package Manager
• Problematic Firebase Component: Firestore
• Other Firebase Components in use: Functions, Cloud Messaging
• Additional SDKs you are using: IronSource, PlayFab, Photon, Facebook
• Platform you are using the Unity editor on: Mac
• Platform you are targeting: Android
• Scripting Runtime: Mono, IL2CPP

[REQUIRED] Please describe the issue here:

Android build crashes when trying to read ChangeType from QuerySnapshot document changes.

1. Register a listener for Firestore collection:

FirebaseFirestore db = FirebaseFirestore.DefaultInstance;
db.Collection("matches").WhereEqualTo("player_id", Login.Self.PlayerID).Listen(LoadMatch);

2. Iterate over the results and try to read document change:

private void LoadMatch(QuerySnapshot snapshot)
{
    foreach (DocumentChange change in snapshot.GetChanges())
    {
        Debug.Log(change.ChangeType); // crashes here
    }
}

Phone crash log:

--------- beginning of crash
2020-12-09 19:42:07.756 16360-16428/? E/AndroidRuntime: FATAL EXCEPTION: UnityMain
    Process: sk.inlogic.chessstrategyboardgame, PID: 16360
    java.lang.Error: *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
    Version '2019.4.16f1 (e05b6e02d63e)', Build type 'Release', Scripting Backend 'mono', CPU 'armeabi-v7a'
    Build fingerprint: 'Sony/H4113/H4113:9/50.2.A.3.77/2122144346:user/release-keys'
    Revision: '0'
    ABI: 'arm'
    Timestamp: 2020-12-09 19:42:06+0100
    pid: 16360, tid: 16428, name: UnityMain  >>> sk.inlogic.chessstrategyboardgame <<<
    uid: 10345
    signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
        r0  00000000  r1  0000402c  r2  00000006  r3  00000008
        r4  00003fe8  r5  0000402c  r6  c524dcf4  r7  0000010c
        r8  0000000b  r9  00000000  r10 e58e928e  r11 c524dd68
        ip  e92cf3cc  sp  c524dce0  lr  e923a115  pc  e9230fde
    
    backtrace:
          #00 pc 0001cfde  /system/lib/libc.so (abort+58) (BuildId: 09d6997dde9d629deac5acecc91661ea)
          #01 pc 0034e351  /system/lib/libart.so (art::Runtime::Abort(char const*)+1664) (BuildId: fb1afbd3fdff41a542b7e911dc4597c1)
          #02 pc 0000738f  /system/lib/libbase.so (android::base::LogMessage::~LogMessage()+494) (BuildId: 414414495a0b4b17c57c98a57c1d3786)
          #03 pc 002324cf  /system/lib/libart.so (art::JavaVMExt::JniAbort(char const*, char const*)+1214) (BuildId: fb1afbd3fdff41a542b7e911dc4597c1)
          #04 pc 0026a599  /system/lib/libart.so (art::JNI::CallObjectMethodV(_JNIEnv*, _jobject*, _jmethodID*, std::__va_list)+1020) (BuildId: fb1afbd3fdff41a542b7e911dc4597c1)
          #05 pc 0015482d  /data/app/sk.inlogic.chessstrategyboardgame-POoH5lCOcJtTGLOLxpYLYA==/lib/arm/libFirebaseCppApp-7_0_1.so (_JNIEnv::CallObjectMethod(_jobject*, _jmethodID*, ...)+16) (BuildId: 634d4e75feefbd66e47541a864ff04b9)
          #06 pc 001835df  /data/app/sk.inlogic.chessstrategyboardgame-POoH5lCOcJtTGLOLxpYLYA==/lib/arm/libFirebaseCppApp-7_0_1.so (std::__ndk1::enable_if<!(is_same<firebase::firestore::DocumentChangeTypeInternal, void>::value), firebase::firestore::jni::ResultTypeMap<firebase::firestore::DocumentChangeTypeInternal, IsPrimitive<firebase::firestore::jni::JniTypeMap<std::__ndk1::decay<firebase::firestore::DocumentChangeTypeInternal>::type>::type>::value>::type>::type firebase::firestore::jni::Env::CallHelper<firebase::firestore::DocumentChangeTypeInternal, _jobject* (_JNIEnv::*&)(_jobject*, _jmethodID*, ...), _jobject*, _jmethodID*>(_jobject* (_JNIEnv::*&&&)(_jobject*, _jmethodID*, ...), _jobject*&&, _jmethodID*&&)+62) (BuildId: 634d4e75feefbd66e47541a864ff04b9)
          #07 pc 0018348f  /data/app/sk.inlogic.chessstrategyboardgame-POoH5lCOcJtTGLOLxpYLYA==/lib/arm/libFirebaseCppApp-7_0_1.so (firebase::firestore::jni::ResultTypeMap<firebase::firestore::DocumentChangeTypeInternal, IsPrimitive<firebase::firestore::jni::JniTypeMap<std::__ndk1::decay<firebase::firestore::DocumentChangeTypeInternal>::type>::type>::value>::type firebase::firestore::jni::Env::Call<firebase::firestore::DocumentChangeTypeInternal>(firebase::firestore::jni::Object const&, firebase::firestore::jni::Method<firebase::firestore::DocumentChangeTypeInternal> const&)+46) (BuildId: 634d4e75feefbd66e47541a864ff04b9)
          #08 pc 0018343b  /data/app/sk.inlogic.chessstrategyboardgame-POoH5lCOcJtTGLOLxpYLYA==/lib/arm/libFirebaseCppApp-7_0_1.so (firebase::firestore::DocumentChangeInternal::type() const+30) (BuildId: 634d4e75feefbd66e47541a864ff04b9)
          #09 pc 0000a516  <anonymous:c41a7000>
    
    managed backtrace:
          #00 (wrapper managed-to-native) Firebase.Firestore.FirestoreCppPINVOKE:DocumentChangeProxy_type (System.Runtime.InteropServices.HandleRef)
          #01 Firebase.Firestore.DocumentChangeProxy:type () <0x2b>
          #02 Firebase.Firestore.DocumentChange:get_ChangeType () <0x23>
          #03 CorrespondenceMode:LoadMatch (Firebase.Firestore.QuerySnapshot) <0x7b>
          #04 Firebase.Firestore.Query/<Listen>c__AnonStorey0/<Listen>c__AnonStorey1:<>m__0 () <0x63>
          #05 Firebase.Dispatcher:Run<TResult_REF> (System.Func`1<TResult_REF>) <0x63>
2020-12-09 19:42:07.758 16360-16428/? E/AndroidRuntime:       #06 Firebase.Platform.FirebaseHandler:RunOnMainThread<TResult_REF> (System.Func`1<TResult_REF>) <0x53>
          #07 Firebase.Firestore.Query/<Listen>c__AnonStorey0:<>m__0 (Firebase.Firestore.QuerySnapshotProxy,Firebase.Firestore.FirestoreError,string) <0xe7>
          #08 Firebase.Firestore.Query:QuerySnapshotsHandler (int,intptr,Firebase.Firestore.FirestoreError,string) <0x8b>
          #09 (wrapper native-to-managed) Firebase.Firestore.Query:QuerySnapshotsHandler (int,intptr,Firebase.Firestore.FirestoreError,intptr)
          #10 (wrapper managed-to-native) Firebase.AppUtilPINVOKE:PollCallbacks ()
          #11 Firebase.AppUtil:PollCallbacks () <0x7>
          #12 Firebase.Platform.FirebaseAppUtils:PollCallbacks () <0xf>
          #13 Firebase.Platform.FirebaseHandler:Update () <0x47>
          #14 Firebase.Platform.FirebaseMonoBehaviour:Update () <0x57>
          #15 (wrapper runtime-invoke) object:runtime_invoke_void__this__ (object,intptr,intptr,intptr)
    
        at libc.abort(abort:58)
        at libart.art::Runtime::Abort(char const*)(Abort:1664)
        at libbase.android::base::LogMessage::~LogMessage()(~LogMessage:494)
        at libart.art::JavaVMExt::JniAbort(char const*, char const*)(JniAbort:1214)
        at libart.art::JNI::CallObjectMethodV(_JNIEnv*, _jobject*, _jmethodID*, std::__va_list)(CallObjectMethodV:1020)
        at libFirebaseCppApp-7_0_1._JNIEnv::CallObjectMethod(_jobject*, _jmethodID*, ...)(CallObjectMethod:16)
        at libFirebaseCppApp-7_0_1.std::__ndk1::enable_if<!(is_same<firebase::firestore::DocumentChangeTypeInternal, void>::value), firebase::firestore::jni::ResultTypeMap<firebase::firestore::DocumentChangeTypeInternal, IsPrimitive<firebase::firestore::jni::JniTypeMap<std::__ndk1::decay<firebase::firestore::DocumentChangeTypeInternal>::type>::type>::value>::type>::type firebase::firestore::jni::Env::CallHelper<firebase::firestore::DocumentChangeTypeInternal, _jobject* (_JNIEnv::*&)(_jobject*, _jmethodID*, ...), _jobject*, _jmethodID*>(_jobject* (_JNIEnv::*&&&)(_jobject*, _jmethodID*, ...), _jobject*&&, _jmethodID*&&)(enable_if<!:62)
        at libFirebaseCppApp-7_0_1.firebase::firestore::jni::ResultTypeMap<firebase::firestore::DocumentChangeTypeInternal, IsPrimitive<firebase::firestore::jni::JniTypeMap<std::__ndk1::decay<firebase::firestore::DocumentChangeTypeInternal>::type>::type>::value>::type firebase::firestore::jni::Env::Call<firebase::firestore::DocumentChangeTypeInternal>(firebase::firestore::jni::Object const&, firebase::firestore::jni::Method<firebase::firestore::DocumentChangeTypeInternal> const&)(DocumentChangeTypeInternal>:46)
        at libFirebaseCppApp-7_0_1.firebase::firestore::DocumentChangeInternal::type() const(type:30)
        at Firebase.Firestore.FirestoreCppPINVOKE.DocumentChangeProxy_type (System.Runtime.InteropServices.HandleRef)(Native Method)
        at Firebase.Firestore.DocumentChangeProxy.type ()(0x2b:43)
        at Firebase.Firestore.DocumentChange.get_ChangeType ()(0x23:35)
        at CorrespondenceMode.LoadMatch (Firebase.Firestore.QuerySnapshot)(0x7b:123)
        at Firebase.Firestore.Query.<Listen>c__AnonStorey0.<Listen>c__AnonStorey1.<>m__0 ()(0x63:99)
        at Firebase.Dispatcher.Run<TResult_REF> (System.Func`1<TResult_REF>)(0x63:99)
        at Firebase.Platform.FirebaseHandler.RunOnMainThread<TResult_REF> (System.Func`1<TResult_REF>)(0x53:83)
        at Firebase.Firestore.Query.<Listen>c__AnonStorey0.<>m__0 (Firebase.Firestore.QuerySnapshotProxy,Firebase.Firestore.FirestoreError,string)(0xe7:231)
        at Firebase.Firestore.Query.QuerySnapshotsHandler (int,intptr,Firebase.Firestore.FirestoreError,string)(0x8b:139)
        at Firebase.Firestore.Query.QuerySnapshotsHandler (int,intptr,Firebase.Firestore.FirestoreError,intptr)(Native Method)
        at Firebase.AppUtilPINVOKE.PollCallbacks ()(Native Method)
        at Firebase.AppUtil.PollCallbacks ()(0x7:7)
        at Firebase.Platform.FirebaseAppUtils.PollCallbacks ()(0xf:15)
        at Firebase.Platform.FirebaseHandler.Update ()(0x47:71)
        at Firebase.Platform.FirebaseMonoBehaviour.Update ()(0x57:87)
        at System.Object.runtime_invoke_void__this__ (object,intptr,intptr,intptr)(Native Method)

It also happens with Firebase Unity quickstarts. Reproduction rate is 100%.

[mogmet]

My environment is here.

Unity editor version: 2020.2.0b14
Firebase Unity SDK version: 7.0.1
Source you installed the SDK: Unity Package Manager
Problematic Firebase Component: Firestore
Other Firebase Components in use: Authentication, Functions, Cloud Messaging, Crashlytics RemoteConfig, Analytics
Platform you are using the Unity editor on: Mac
Platform you are targeting: Android
Scripting Runtime: Mono, IL2CPP

I also happen too.

This article may be useful.
https://forum.unity.com/threads/game-crashes-on-android-not-on-ios.511264/

Please support this issue as soon as possible.

[wilhuff]

Sorry for the trouble. I've reproduced this and am working on a fix.

[mogmet]

Thank you for report!
I'm in trouble about this issue.
so please let us know if this issue is resolved.

[wilhuff]

The fix for this issue is currently being reviewed, and we'll include it in our next release. Timing of that next release is complicated by the holidays in the US.

You can work around this issue temporarily by inferring the type value from the indexes, like so:

public DocumentChange.Type GetChangeType(DocumentChange change) {
  if (change.OldIndex < 0) {
    return DocumentChange.Type.Added;
  } else if (change.NewIndex < 0) {
    return DocumentChange.Type.Removed;
  } else {
    return DocumentChange.Type.Modified;
  }
}

[wilhuff]

The fix for this issue has been submitted and will be a part of the next release.

[mogmet]

Thank you for early support.
I want to include this fix as soon as possible because of new app will release until this year.
So I'm waiting...

[wilhuff]

FYI, we released 7.0.2 today to fix a critical issue (#900). Since this issue has a workaround, it will wait for the next regular release.