Hello,

If we have this code in our interface .h file:

NSString *fieldNameToStoreModel;
NSFetchedResultsController *fetchedResultsController;
NSManagedObjectContext *managedObjectContext;
DataEntered *dataEntered;

In our implementation file .m we must have:

- (void)dealloc {

[fieldNameToStoreModel release];
[fetchedResultsController release];
[managedObjectContext release];
[dataEntered release];

[super dealloc];
}

The 4 objects are assigned from a previous UIViewController, like this:

UIViewController *detailViewController;

detailViewController = [[CarModelSelectViewController alloc] initWithStyle:UITableViewStylePlain];
((CarModelSelectViewController *)detailViewController).dataEntered = self.dataEntered;
((CarModelSelectViewController *)detailViewController).managedObjectContext = self.managedObjectContext;
((CarModelSelectViewController *)detailViewController).fieldNameToStoreModel = self.fieldNameToStoreModel;

[self.navigationController pushViewController:detailViewController animated:YES];
[detailViewController release];

The objects that now live in the new UIViewController, are the same as the previous UIViewController, and I can't release them in the new UIViewController ?

The problems is that sometimes, my app crashes when I leave the new UIViewController and go to the previous one, not always. Normally the error that I'm getting is a double free object.

I've used the malloc_error_break but I'm still not sure wich object is.

Sometimes I can go from the previous UIViewController to the next one and come back 4 or 5 times, and the double free object appears.

If I don't release any object, all is working and Instruments says that there are no memory leaks ...

So, the final question, should I release those objects here or not ?

Thanks,

m.