Realm-cocoa: EXC_BAD_ACCESS RealmSwift 0.98.6 XCode 7.3

[peterturza]

After upgrading to XCode 7.3 and using RealmSwift 0.98.6 as suggested I keep getting the error in RLMSchema.mm line 228 . EXC_BAD_ACCESS (code=2, address=0x10ad2c5d8)
iOS version - tried 9.3, 8.4, simulator and device
I am creating instance of realm in AppDelegate. I am using cocoapods 0.39.0
When I tried to integrate RealmSwift through cocoapods in empty project and creating instance of realm in AppDelegate it worked. But in my original project it is not working

Thread 1Queue : com.apple.main-thread (serial)
#0  0x000000010f10404b in realizeClass(objc_class*) ()
#1  0x000000010f1045d9 in realizeAllClasses() ()
#2  0x000000010f106152 in objc_copyClassList ()
#3  0x000000010c0d7c96 in +[RLMSchema sharedSchema] at /Users/peterko/projects/ios/ishmu/Pods/Realm/Realm/RLMSchema.mm:228
#4  0x000000010c0bd732 in +[RLMRealm realmWithConfiguration:error:] at /Users/peterko/projects/ios/ishmu/Pods/Realm/Realm/RLMRealm.mm:373
#5  0x000000010c572fac in @nonobjc RLMRealm.__allocating_init(configuration : RLMRealmConfiguration) throws -> RLMRealm ()
#6  0x000000010c56fc88 in Realm.init(configuration : Realm.Configuration) throws -> Realm at /Users/peterko/projects/ios/ishmu/Pods/RealmSwift/RealmSwift/Realm.swift:75
#7  0x000000010c570028 in Realm.__allocating_init(configuration : Realm.Configuration) throws -> Realm ()
#8  0x000000010ac3c92e in AppDelegate.init() -> AppDelegate at /Users/peterko/projects/ios/ishmu/iSHMU/AppDelegate.swift:107
#9  0x000000010ac3ca31 in @objc AppDelegate.init() -> AppDelegate ()
#10 0x000000010c7b6565 in _UIApplicationMainPreparations ()
#11 0x000000010c7b5eda in UIApplicationMain ()
#12 0x000000010ac3cab2 in main at /Users/peterko/projects/ios/ishmu/iSHMU/AppDelegate.swift:18
#13 0x000000010fbce92d in start ()

[bdash]

Thanks for filing this, @peterturza. Do you see the same crash when running on an iOS device rather than in the simulator?

[peterturza]

@bdash yes, the crash is the same on device and simulator

[PoissonBallon]

@bdash If i can help i have exactly the same issue here ....

[williamvasconcelos]

Same issue here

[peterturza]

The other project in which I use realm swift is functional after upgrade (tried today). @bdash maybe my model files could help to find the problem?

[bdash]

The nature of the crash implies that there's some metadata used by the Objective-C runtime that is in an inconsistent state. If anyone is willing to share a build of their application (e.g., the .app) compiled for an iOS device that reproduces the crash, I can take a look to help understand what's going on. If you're willing, please share the built app with [email protected] and mention this GitHub issue number in your email.

[peterturza]

I have sent the build to [email protected]

[bdash]

@PoissonBallon, @williamvasconcelos: If you're willing to share builds of your app that reproduce this crash, I'd appreciate seeing them too. It'll help track down the common factor in the crash.

[bdash]

As I suspected, this is a Swift compiler bug. Caesar Wirth came to the same conclusion and has written up a blog post about the issue, including a workaround you can apply in your application. He also links to the Swift compiler bug report that is being used to track the compiler fix.

[AliSoftware]

This is already getting fixed by the Swift team :+1: https://github.com/apple/swift/pull/1914
(OpenSource Swift is so amazing :heart_eyes: )

[jckarter]

Yeah, sorry about that. If you reorder your fields so that a non-empty type is the first declared stored property, it will work around the issue.