Open Radar

 
Area:
Core Data

Summary:
Since iOS 11, my application can no longer open core data binary stores with UIColors stored in Transformable attributes.

This only seems to affect Binary stores, I tested with SQLLite store and the problem did not occur.

Steps to Reproduce:
Run the attached project twice

The project is a clean new project built in Objective C with Core Data added.  
The persistent store lazy property was changed such that a Binary datastore is created instead of the default SQLLite
In addition on startup, an entity is created if not present, and accessed if it is.

Expected Results:
The application does not crash

Observed Results:
The application does crash with trace : 

CoreDataTransformableAttribBug.binary, NSUnderlyingException=value for key 'NS.objects' was of unexpected class 'UIColor'. Allowed classes are '{(\n    NSData,\n    NSNumber,\n    NSOrderedSet,\n    NSDate,\n    NSArray,\n    NSDictionaryMapNode,\n    NSString,\n    NSUUID,\n    NSSet,\n    NSDictionary,\n    NSURL,\n    NSDecimalNumber,\n    NSNull\n)}'.}";
    NSUnderlyingException = "Can't read binary data from file";
}

Version:
iOS 11 with XCode Version 9.0 beta 5 (9M202q)

Notes:


Configuration:
Only occurs when NSBinaryStoreType type is used for Core Data persistent store.

OpenRadar extra
(Attached project to original, but project is on gitHub showing how to reproduce the bug here : https://github.com/seriouscyrus/CoreDataTransformableAttribBug ) .  The bug is also present on MacOS