Crash when deleting/disabling user from MongoDB dashboard

[zcohan]

Goals

When deleting or disabling a signed-in user from the MongoDB Realm dashboard, my application crashes

Expected Results

I'm not sure what the correct way for handling a user being deleted is, but perhaps there's a notification of some kind? Certainly not a hard crash.

Actual Results

• Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*

• -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[0]'

  • First throw call stack:
    (
    0 CoreFoundation 0x00007fff206d387b __exceptionPreprocess + 242
    1 libobjc.A.dylib 0x00007fff2040bd92 objc_exception_throw + 48
    2 CoreFoundation 0x00007fff207892ea _CFThrowFormattedException + 202
    3 CoreFoundation 0x00007fff20794dd1 -[__NSPlaceholderDictionary initWithCapacity:].cold.1 + 0
    4 CoreFoundation 0x00007fff205e2ecd -[__NSPlaceholderDictionary initWithObjects:forKeys:count:] + 251
    5 CoreFoundation 0x00007fff205e2db8 ﹍[NSDictionary dictionaryWithObjects:forKeys:count:]﹍ 49
    6 Realm 0x0000000104dc1b7f _ZNSt3__110__function6__funcIZ77-[RLMSyncConfiguration initWithUser:partitionValue:customFileURL:stopPolicy:]E3$0NS_9allocatorIS2_EEFvNS_10shared_ptrIN5realm11SyncSessionEEENS6_9SyncErrorEEEclEOS8_OS9 + 987
    7 Realm 0x00000001051b3761 _ZNSt3__110__function6__funcIZN5realm11SyncSession14handle_refreshENS_10shared_ptrIS3_EEE3$0NS_9allocatorIS6_EEFvNS2_4util8OptionalINS2_3app8AppErrorEEEEEclEOSD + 1073
    8 Realm 0x00000001051bfc1f _ZNSt3__110__function6__funcIZN5realm8SyncUser19refresh_custom_dataENS_8functionIFvNS2_4util8OptionalINS2_3app8AppErrorEEEEEEE3$8NS_9allocatorISC_EESA_EclEOS9 + 223
    9 Realm 0x0000000105193863 _ZNSt3__110__function6__funcIZN5realm3app3App20refresh_access_tokenENS_10shared_ptrINS2_8SyncUserEEENS_8functionIFvNS2_4util8OptionalINS3_8AppErrorEEEEEEE4$22NS_9allocatorISF_EEFvNS3_8ResponseEEEclEOSI + 99
    10 Realm 0x0000000104c92575 ___ZN12_GLOBAL__N_121CocoaNetworkTransport22send_request_to_serverEN5realm3app7RequestENSt3__18functionIFvNS2_8ResponseEEEE_block_invoke + 508
    11 Realm 0x0000000104cc1e33 -[RLMSessionDelegate URLSession:task:didCompleteWithError:] + 398
    12 CFNetwork 0x00007fff24aa27e3 CFHTTPCookieStorageUnscheduleFromRunLoop + 161136
    13 libclang_rt.tsan_osx_dynamic.dylib 0x0000000103bbb5ac _ZN6__tsanL24invoke_and_release_blockEPv + 12
    14 libclang_rt.tsan_osx_dynamic.dylib 0x0000000103bbb302 _ZN6__tsanL22dispatch_callback_wrapEPv + 306
    15 libdispatch.dylib 0x0000000106f45264 _dispatch_client_callout + 8
    16 libdispatch.dylib 0x0000000106f4c7e7 _dispatch_lane_serial_drain + 776
    17 libdispatch.dylib 0x0000000106f4d6ec _dispatch_lane_invoke + 490
    18 libdispatch.dylib 0x0000000106f5b2c4 _dispatch_workloop_worker_thread + 1660
    19 libsystem_pthread.dylib 0x0000000106fe9b0d _pthread_wqthread + 314
    20 libsystem_pthread.dylib 0x0000000106fe8ae3 start_wqthread + 15
    )
    libc++abi: terminating with uncaught exception of type NSException
  • Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '** -[__NSPlaceholderDictionary initWithObjects:forKeys:count:]: attempt to insert nil object from objects[0]'
    terminating with uncaught exception of type NSException

Steps for others to Reproduce

Sign-in using email/password authentication, observe an object in Realm, and then disable the user from the MongoDB dashboard or revoke their sessions.

Realm framework version:
10.10.0

Xcode version:
Version 12.5.1 (12E507)

iOS/OSX version:
macOS 11.4 (20F71)

[dianaafanador3]

HI @zcohan thanks for informing this issue. We'll try to take a look at this and reproduce this issue, surely we don't want any app to crash in any particular use case.

[sync-by-unito]

➤ Diana Maria Perez Afanador commented:

v10.15.0