Realm Is Crashing At Startup

[chodges]

I am using Realm (0.98.4)
iOS 9.2 SDK
Xcode 7.2.1
Swift

My app is crashing the first time I attempt to open a realm. But it is only happening so far on my iPhone 5. On the iPhone 6 the app works perfectly.

Here is code:

..... In the App Delegate .....

   func setupRealm(){
       var config = Realm.Configuration()
        config.path = NSURL.fileURLWithPath(config.path!)
             .URLByDeletingLastPathComponent?
             .URLByAppendingPathComponent("vflicks.realm")
            .path

       Realm.Configuration.defaultConfiguration = config
  }

.... And in the initial Table View ....

  var realm : Realm?

  override func viewDidLoad() {
    super.viewDidLoad()

    self.title = "My App"

    self.realm = try! Realm()   < =======  This is where the app is crashing

}

The exception is happening in this code

static void commit_and_continue_as_read(SharedGroup& sg)
{
    sg.commit_and_continue_as_read();   <-===== This is where exception 
}

Here's the contents of sg:

  sg    realm::SharedGroup &    0x1633cc00  0x1633cc00
  m_group   realm::Group        
  m_read_lock   realm::SharedGroup::ReadLockInfo        
  m_local_max_entry uint_fast32_t   32  32
  m_file    realm::util::File       
  m_file_map    realm::util::File::Map<realm::SharedGroup::SharedInfo>      
  m_reader_map  realm::util::File::Map<realm::SharedGroup::SharedInfo>      
  m_wait_for_change_enabled bool    true    true
  m_lockfile_path   std::__1::string    "/var/mobile/Containers/Data/Application/B128D6F7-7934-4E2A-8F17-C7E005B37E70/Documents/vflicks.realm.lock" 
 m_db_path  std::__1::string    "/var/mobile/Containers/Data/Application/B128D6F7-7934-4E2A-8F17-C7E005B37E70/Documents/vflicks.realm"  
 m_key  const char *    NULL    0x00000000
 m_transact_stage   realm::SharedGroup::TransactStage   transact_Writing    transact_Writing
 m_handover_lock    realm::util::Mutex      
 m_room_to_write    realm::util::PlatformSpecificCondVar        
 m_work_to_do   realm::util::PlatformSpecificCondVar        
 m_daemon_becomes_ready realm::util::PlatformSpecificCondVar        
 m_new_commit_available realm::util::PlatformSpecificCondVar        

Here's the trace:

Thread 1Queue : com.apple.main-thread (serial)
#0 0x38800fe0 in OSAtomicCompareAndSwap64Barrier ()
#1 0x38805b92 in _pthread_cond_signal ()
#2 0x0147815a in realm::SharedGroup::low_level_commit(unsigned long long) ()
#3 0x01477d14 in realm::SharedGroup::do_commit() ()
#4 0x01478342 in realm::SharedGroup::commit_and_continue_as_read() ()
#5 0x013addca in realm::_impl::SharedGroupFriend::commit_and_continue_as_read(realm::SharedGroup&) at /Users/christopherhodges/Development/voiceflicks/Pods/Realm/include/core/realm/group_shared.hpp:1108
#6 0x013addb6 in realm::LangBindHelper::commit_and_continue_as_read(realm::SharedGroup&) at /Users/christopherhodges/Development/voiceflicks/Pods/Realm/include/core/realm/lang_bind_helper.hpp:372
#7 0x013a7546 in realm::_impl::transaction::commit(realm::SharedGroup&, realm::BindingContext*) at /Users/christopherhodges/Development/voiceflicks/Pods/Realm/Realm/ObjectStore/impl/transact_log_handler.cpp:451
#8 0x013a3018 in realm::Realm::commit_transaction() at /Users/christopherhodges/Development/voiceflicks/Pods/Realm/Realm/ObjectStore/shared_realm.cpp:318
#9 0x013a234e in realm::Realm::update_schema(std::__1::unique_ptr<realm::Schema, std::__1::default_deleterealm::Schema >, unsigned long long) at /Users/christopherhodges/Development/voiceflicks/Pods/Realm/Realm/ObjectStore/shared_realm.cpp:254
#10 0x0137fbba in +[RLMRealm realmWithConfiguration:error:] at /Users/christopherhodges/Development/voiceflicks/Pods/Realm/Realm/RLMRealm.mm:374
#11 0x017a0b80 in @nonobjc RLMRealm.__allocating_init(configuration : RLMRealmConfiguration) throws -> RLMRealm ()
#12 0x0179c6f8 in Realm.init(configuration : Realm.Configuration) throws -> Realm at /Users/christopherhodges/Development/voiceflicks/Pods/RealmSwift/RealmSwift/Realm.swift:75
#13 0x0179cb78 in Realm.__allocating_init(configuration : Realm.Configuration) throws -> Realm ()
#14 0x00019880 in VoiceflicksTableViewController.viewDidLoad() -> () at /Users/christopherhodges/Development/voiceflicks/voiceflicks/VoiceflicksTableViewController.swift:27
#15 0x0001996c in @objc VoiceflicksTableViewController.viewDidLoad() -> () ()
#16 0x2aa8922e in -UIViewController loadViewIfRequired
#17 0x2ab4358e in -UINavigationController _layoutViewController:
#18 0x2ab43488 in -UINavigationController _updateScrollViewFromViewController:toViewController:
#19 0x2ab4282c in -UINavigationController _startTransition:fromViewController:toViewController:
#20 0x2ab4247e in -UINavigationController _startDeferredTransitionIfNeeded:
#21 0x2ab420c4 in -UINavigationController __viewWillLayoutSubviews
#22 0x2ab4203e in -UILayoutContainerView layoutSubviews
#23 0x2aa8539a in -UIView(CALayerDelegate) layoutSublayersOfLayer:
#24 0x2a35667c in -CALayer layoutSublayers
#25 0x2a351d78 in CA::Layer::layout_if_needed(CA::Transaction*) ()
#26 0x2a351c08 in CA::Layer::layout_and_display_if_needed(CA::Transaction*) ()
#27 0x2a351128 in CA::Context::commit_transaction(CA::Transaction*) ()
#28 0x2a350dea in CA::Transaction::commit() ()
#29 0x2a34a5be in CA::Transaction::observer_callback(CFRunLoopObserver, unsigned long, void) ()
#30 0x26975cd0 in CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION ()
#31 0x26973fc6 in __CFRunLoopDoObservers ()
#32 0x268c6da8 in CFRunLoopRunSpecific ()
#33 0x268c6b7c in CFRunLoopRunInMode ()
#34 0x2aaf4bde in -UIApplication _run
#35 0x2aaef99c in UIApplicationMain ()
#36 0x00025f0c in main at /Users/christopherhodges/Development/voiceflicks/voiceflicks/AppDelegate.swift:17

[chodges]

Interestingly after reading through a few other people's issues with the latest build (0.98.4) I downgraded to 0.98.3 and everything works fine now.

[ppamorim]

@chodges Not working yet...

[TheHmmka]

Yep, not working! I created the same issue but with Objective C!
Works fine with simulator but iPhone 4s with iOS 8.4.1 is crashing...

[bdash]

Thanks for the report, @chodges. We're tracking this issue via #3321.