I'm having another look at an issue I posted about a couple of weeks ago, where Save As was causing an error. At the time, I was using a custom managed object context. I have now reverted to a standard managed object context. I do not create or release this managed object context anywhere - it gets automatically created when I first access it from my persistent document...but this context is not where the problem occurs.
When I do a Save As, it migrates to a new store behind the scenes, it appears to load my objects into the new store OK, and accesses the attributes OK, but then I get a crash where it tries to send a message to a deallocated NSManagedObjectContext. This context is created by core data internally as Instruments shows: # Category Event Type RefCt Timestamp Address Size Responsible Library Responsible Caller 0 NSManagedObjectContext Malloc 1 00:28.911 0x11d0d58a0 240 CoreData -[NSPersistentStoreCoordinator(_NSInternalMethods) _retainedAllMigratedObjectsInStore:toStore:] 1 NSManagedObjectContext Autorelease 00:28.953 0x11d0d58a0 0 CoreData -[NSPersistentStoreCoordinator(_NSInternalMethods) _retainedAllMigratedObjectsInStore:toStore:] 2 NSManagedObjectContext Zombie -1 00:28.955 0x11d0d58a0 0 CoreData -[NSManagedObjectContext(_NSInternalAdditions) _dispose:] As far as I can see, I never get a look in. It all appears to be triggered by [NSPersistentStoreCoordinator migratePersistentStore:toURL:options:withType:error:]. But obviously there must be something somewhere in my code causing this problem. I am just totally clueless as to where to look, and would appreciate any suggestions. I thought there might be something happening in one of my awake... methods or a dealloc or willTurnIntoFault or didTurnIntoFault, but I didn't find anything that looked suspicious. The store is an NSAtomicStore subclass, and I read that there could be problems with Save As if newReferenceObjectForManagedObject: did not return a constant value, but that isn't called before it crashes...so I'm stuck. Any ideas? TIA Gideon _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
