firebase-ios-sdk: Crash on Xcode 13 beta 5 - Apple M1

Step 1: Describe your environment

Xcode version: Xcode 13 beta 5 -> MacBook Pro M1
Firebase SDK version: 8.5.0
Installation method: Swift Package Manager
Firebase Component: Messaging

Step 2: Describe the problem

Steps to reproduce:

My team implemented the basic code for Firebase messaging. However the app is crashing upon first launch on my M1. We did some testing here are our results: Xcode 12, iOS 14 simulator, Apple M1 -> Working Xcode 13, iOS 14 simulator, Apple M1 -> Working Xcode 13, iOS 15 simulator, Apple M1 -> Not working Xcode 12, iOS 14 simulator, Intel -> Working Xcode 13, iOS 14 simulator, Intel -> Working Xcode 13, iOS 15 simulator, Intel -> Working

Crash in the GoogleUtilities library on line 97 GULHeartbeatDateStorage.m I don’t know if it’s relevant but here is the reason -> Edit this is wrong it wasn’t captured at the same time as the stack trace: ~Thread 8: EXC_BREAKPOINT (code=1, subcode=0x1036fc4b8)~ It’s the thread 5 which crashed in the stack trace.

  thread #1, queue = 'com.apple.main-thread'
    frame #0: 0x00000001c809c410 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c809c7b4 libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000018034f320 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x0000000180349834 CoreFoundation`__CFRunLoopRun + 1136
    frame #4: 0x0000000180348eb8 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x000000018c2745ec GraphicsServices`GSEventRunModal + 160
    frame #6: 0x0000000184d337b4 UIKitCore`-[UIApplication _run] + 992
    frame #7: 0x0000000184d38138 UIKitCore`UIApplicationMain + 112
    frame #8: 0x00000001021bce78 kDrive`main at AppDelegate.swift:34:7
    frame #9: 0x0000000103109c04 dyld_sim`start_sim + 20
  thread #2, queue = 'com.apple.root.utility-qos'
    frame #0: 0x00000001c809c44c libsystem_kernel.dylib`semaphore_wait_trap + 8
    frame #1: 0x0000000103585ec8 libdispatch.dylib`_dispatch_sema4_wait + 24
    frame #2: 0x0000000103586540 libdispatch.dylib`_dispatch_semaphore_wait_slow + 128
    frame #3: 0x00000001808b9ecc Foundation`-[NSFileCoordinator(NSPrivate) _blockOnAccessClaim:withAccessArbiter:] + 356
    frame #4: 0x00000001808bb140 Foundation`-[NSFileCoordinator(NSPrivate) _coordinateWritingItemAtURL:options:error:byAccessor:] + 568
    frame #5: 0x00000001808b8c6c Foundation`-[NSFileCoordinator coordinateWritingItemAtURL:options:error:byAccessor:] + 92
    frame #6: 0x000000010960439c kDriveCore`-[GULHeartbeatDateStorage checkAndCreateDirectory:](self=0x0000600000f37580, _cmd="checkAndCreateDirectory:", directoryPathURL=0x0000600002c7c5a0) at GULHeartbeatDateStorage.m:78:3
    frame #7: 0x0000000109604198 kDriveCore`-[GULHeartbeatDateStorage fileURL](self=0x0000600000f37580, _cmd="fileURL") at GULHeartbeatDateStorage.m:50:5
    frame #8: 0x00000001096045b0 kDriveCore`-[GULHeartbeatDateStorage heartbeatDateForTag:](self=0x0000600000f37580, _cmd="heartbeatDateForTag:", tag=0x00000001098e4688) at GULHeartbeatDateStorage.m:97:57
    frame #9: 0x00000001096140bc kDriveCore`+[FIRHeartbeatInfo updateIfNeededHeartbeatDateForTag:](self=FIRHeartbeatInfo, _cmd="updateIfNeededHeartbeatDateForTag:", heartbeatTag=0x00000001098e4688) at FIRHeartbeatInfo.m:42:29
    frame #10: 0x0000000109614270 kDriveCore`+[FIRHeartbeatInfo heartbeatCodeForTag:](self=FIRHeartbeatInfo, _cmd="heartbeatCodeForTag:", heartbeatTag=0x00000001098e4688) at FIRHeartbeatInfo.m:56:31
    frame #11: 0x00000001096211d4 kDriveCore`__96-[FIRInstallationsAPIService requestWithURL:HTTPMethod:bodyDict:refreshToken:additionalHeaders:]_block_invoke(.block_descriptor=0x0000600002b129e0) at FIRInstallationsAPIService.m:278:34
    frame #12: 0x00000001095f95e0 kDriveCore`__38+[FBLPromise(.block_descriptor=0x0000600001dc5040) onQueue:do:]_block_invoke at FBLPromise+Do.m:33:16
    frame #13: 0x0000000103584028 libdispatch.dylib`_dispatch_call_block_and_release + 24
    frame #14: 0x0000000103585828 libdispatch.dylib`_dispatch_client_callout + 16
    frame #15: 0x00000001035980ac libdispatch.dylib`_dispatch_root_queue_drain + 1336
    frame #16: 0x0000000103598814 libdispatch.dylib`_dispatch_worker_thread2 + 188
    frame #17: 0x00000001c80effec libsystem_pthread.dylib`_pthread_wqthread + 212
  thread #3
    frame #0: 0x00000001c80eedf0 libsystem_pthread.dylib`start_wqthread
  thread #4
    frame #0: 0x00000001c809df64 libsystem_kernel.dylib`__workq_kernreturn + 8
* thread #5, queue = 'com.google.FIRCoreDiagnostics', stop reason = EXC_BREAKPOINT (code=1, subcode=0x1035bc4b8)
    frame #0: 0x00000001035bc4b8 libdispatch.dylib`_dispatch_sema4_wait.cold.3 + 36
    frame #1: 0x0000000103585ee4 libdispatch.dylib`_dispatch_sema4_wait + 52
    frame #2: 0x0000000103586540 libdispatch.dylib`_dispatch_semaphore_wait_slow + 128
    frame #3: 0x00000001808b9ecc Foundation`-[NSFileCoordinator(NSPrivate) _blockOnAccessClaim:withAccessArbiter:] + 356
    frame #4: 0x00000001808babd4 Foundation`-[NSFileCoordinator(NSPrivate) _coordinateReadingItemAtURL:options:error:byAccessor:] + 628
    frame #5: 0x00000001808b8b48 Foundation`-[NSFileCoordinator coordinateReadingItemAtURL:options:error:byAccessor:] + 92
  * frame #6: 0x000000010960465c kDriveCore`-[GULHeartbeatDateStorage heartbeatDateForTag:](self=0x0000600000f3ff80, _cmd="heartbeatDateForTag:", tag=0x00000001098e2968) at GULHeartbeatDateStorage.m:97:3
    frame #7: 0x000000010960c274 kDriveCore`-[FIRCoreDiagnostics setHeartbeatFlagIfNeededToConfig:](self=0x0000600000f3fd20, _cmd="setHeartbeatFlagIfNeededToConfig:", config=0x000000016dec2800) at FIRCoreDiagnostics.m:531:7
    frame #8: 0x000000010960c024 kDriveCore`__42-[FIRCoreDiagnostics sendDiagnosticsData:]_block_invoke(.block_descriptor=0x000060000062e070) at FIRCoreDiagnostics.m:513:5
    frame #9: 0x0000000103584028 libdispatch.dylib`_dispatch_call_block_and_release + 24
    frame #10: 0x0000000103585828 libdispatch.dylib`_dispatch_client_callout + 16
    frame #11: 0x000000010358ca5c libdispatch.dylib`_dispatch_lane_serial_drain + 756
    frame #12: 0x000000010358d710 libdispatch.dylib`_dispatch_lane_invoke + 436
    frame #13: 0x000000010359977c libdispatch.dylib`_dispatch_workloop_worker_thread + 820
    frame #14: 0x00000001c80f0028 libsystem_pthread.dylib`_pthread_wqthread + 272
  thread #6
    frame #0: 0x00000001c80eedf0 libsystem_pthread.dylib`start_wqthread
  thread #7
    frame #0: 0x00000001c80eedf0 libsystem_pthread.dylib`start_wqthread
  thread #8, name = 'com.apple.uikit.eventfetch-thread'
    frame #0: 0x00000001c809c410 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c809c7b4 libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000018034f320 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x0000000180349834 CoreFoundation`__CFRunLoopRun + 1136
    frame #4: 0x0000000180348eb8 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x000000018080ec88 Foundation`-[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 232
    frame #6: 0x000000018080ef40 Foundation`-[NSRunLoop(NSRunLoop) runUntilDate:] + 88
    frame #7: 0x0000000184de6dcc UIKitCore`-[UIEventFetcher threadMain] + 472
    frame #8: 0x000000018083885c Foundation`__NSThread__start__ + 724
    frame #9: 0x00000001c80f3c8c libsystem_pthread.dylib`_pthread_start + 288
  thread #9, name = 'com.apple.CFSocket.private'
    frame #0: 0x00000001c80a60c0 libsystem_kernel.dylib`__select + 8
    frame #1: 0x0000000180365224 CoreFoundation`__CFSocketManager + 620
    frame #2: 0x00000001c80f3c8c libsystem_pthread.dylib`_pthread_start + 288
  thread #10
    frame #0: 0x00000001c809f6bc libsystem_kernel.dylib`__semwait_signal + 8
    frame #1: 0x00000001800fb86c libsystem_c.dylib`nanosleep + 212
    frame #2: 0x00000001800fb66c libsystem_c.dylib`sleep + 44
    frame #3: 0x000000010874a23c kDriveCore`monitorCachedData(userData=0x00000001096e89cd) at SentryCrashCachedData.c:139:9
    frame #4: 0x00000001c80f3c8c libsystem_pthread.dylib`_pthread_start + 288
  thread #11, name = 'Realm notification listener'
    frame #0: 0x00000001c80a1e2c libsystem_kernel.dylib`kevent + 8
    frame #1: 0x0000000108d856bc kDriveCore`realm::_impl::ExternalCommitHelper::listen(this=0x00006000006c3030) at external_commit_helper.cpp:220:15
    frame #2: 0x0000000108d88ac0 kDriveCore`realm::_impl::ExternalCommitHelper::ExternalCommitHelper(this=0x0000600000a50b38)::$_0::operator()() const at external_commit_helper.cpp:176:13
    frame #3: 0x0000000108d88a5c kDriveCore`decltype(__f=0x0000600000a50b38)::$_0>(fp)()) std::__1::__invoke<realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0>(realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0&&) at type_traits:3747:1
    frame #4: 0x0000000108d889bc kDriveCore`void std::__1::__thread_execute<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0>(__t=size=2, (null)=__tuple_indices<> @ 0x000000016e20af6f)::$_0>&, std::__1::__tuple_indices<>) at thread:280:5
    frame #5: 0x0000000108d880c0 kDriveCore`void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, realm::_impl::ExternalCommitHelper::ExternalCommitHelper(realm::_impl::RealmCoordinator&)::$_0> >(__vp=0x0000600000a50b30) at thread:291:5
    frame #6: 0x00000001c80f3c8c libsystem_pthread.dylib`_pthread_start + 288
  thread #12, name = 'AVAudioSession Notify Thread'
    frame #0: 0x00000001c809c410 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c809c7b4 libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000018034f320 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x0000000180349834 CoreFoundation`__CFRunLoopRun + 1136
    frame #4: 0x0000000180348eb8 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x00000001bb464428 AudioSession`CADeprecated::GenericRunLoopThread::Entry(void*) + 156
    frame #6: 0x00000001bb476584 AudioSession`CADeprecated::CAPThread::Entry(CADeprecated::CAPThread*) + 84
    frame #7: 0x00000001c80f3c8c libsystem_pthread.dylib`_pthread_start + 288
  thread #13, name = 'AMCP Logging Spool'
    frame #0: 0x00000001c809c44c libsystem_kernel.dylib`semaphore_wait_trap + 8
    frame #1: 0x00000001a71a61f4 caulk`caulk::mach::semaphore::wait_or_error() + 24
    frame #2: 0x00000001a71a1198 caulk`caulk::concurrent::details::worker_thread::run() + 52
    frame #3: 0x00000001a71a1210 caulk`void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*> > >(void*) + 48
    frame #4: 0x00000001c80f3c8c libsystem_pthread.dylib`_pthread_start + 288
  thread #14, name = 'com.apple.NSURLConnectionLoader'
    frame #0: 0x00000001c809c410 libsystem_kernel.dylib`mach_msg_trap + 8
    frame #1: 0x00000001c809c7b4 libsystem_kernel.dylib`mach_msg + 72
    frame #2: 0x000000018034f320 CoreFoundation`__CFRunLoopServiceMachPort + 368
    frame #3: 0x0000000180349834 CoreFoundation`__CFRunLoopRun + 1136
    frame #4: 0x0000000180348eb8 CoreFoundation`CFRunLoopRunSpecific + 572
    frame #5: 0x0000000183df543c CFNetwork`___lldb_unnamed_symbol11236$$CFNetwork + 424
    frame #6: 0x000000018083885c Foundation`__NSThread__start__ + 724
    frame #7: 0x00000001c80f3c8c libsystem_pthread.dylib`_pthread_start + 288

Relevant Code:

The whole code is on our github but here are the most relevant parts:

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        FirebaseApp.configure()
        UNUserNotificationCenter.current().delegate = self
        let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
        UNUserNotificationCenter.current().requestAuthorization(
            options: authOptions,
            completionHandler: { _, _ in }
        )
        application.registerForRemoteNotifications()
        Messaging.messaging().delegate = self
        //...
    }

    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        Messaging.messaging().apnsToken = deviceToken
    }

    func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String?) {
        let dataDict = ["token": fcmToken ?? ""]
        NotificationCenter.default.post(name: Notification.Name("FCMToken"), object: nil, userInfo: dataDict)
    }

About this issue

Original URL
State: closed
Created 3 years ago
Reactions: 5
Comments: 15 (7 by maintainers)

Most upvoted comments

Hi everyone,

It seems that there were some synchronization issues that originated with the use of NSFileCoordinator. We are planning on publishing a patch update for one of Firebase’s dependencies within the next day or so. At that point, you’ll be to pull in the update by updating to the latest package versions for SPM (or updating your pods for CocoaPods).

While the patch update should fix this issue’s specific crash, there seems to be a larger issue in Xcode 13b5 you can follow at https://developer.apple.com/forums/thread/687682 (thanks @alexfringes for the mention).

We have done some experiments and this semaphore related crash appears in apps running in the simulator on an M1 machine (for Xcode 13b5) regardless of whether or not they use Firebase.

We will be following the Apple forums thread for updates regarding this broader issue.

Thanks @PhilippeWeidmann for reporting the issue!

ncooke3 on Aug 16, 2021

The Release Notes reference to the issue and workaround is at https://developer.apple.com/documentation/ios-ipados-release-notes/ios-ipados-15-beta-release-notes

paulb777 on Aug 26, 2021

For anyone still running into the underlying bug, a workaround was mentioned in today’s beta release notes (thanks to sjs from the dev forums for pinging the aforementioned thread with this):

Using dispatch semaphores in an iOS app running in a device simulator on a Mac with Apple silicon running macOS 11 will cause the app to crash. (81783378) Workaround: In Xcode select Product > Scheme > Edit Scheme…, then deselect Run > Options > Queue Debugging > “Enable backtrace recording.”

alexfringes on Aug 26, 2021

In case it’s of any use, I thought I’d highlight a thread documenting seemingly similar issues (some not involving Firebase) from the Apple dev forums: https://developer.apple.com/forums/thread/687682

alexfringes on Aug 15, 2021

Thank you for the updates. We were able to reproduce the issue and are investigating it.

maksymmalyhin on Aug 13, 2021

I have not seen it on RC. When RC came out, I reverted the workaround Apple posted of disabling backtrace recording and have been using RC + simulators on an M1 without issues since then.

alexfringes on Sep 20, 2021