Re: -[NSManagedObjectContext save:] fails but gives no NSError

FROM : mmalc crawford
DATE : Fri Nov 23 23:46:37 2007

On Nov 23, 2007, at 9:24 AM, Jerry Krinock wrote:
> After I discovered and removed a bunch of stupid code, this problem 
> went away.  It appears that I was either trying to insert or delete 
> objects twice, or trying to insert objects with relationships to 
> objects that had been deleted (inconsistent object graph).
> Lesson: Do not assume that -[NSManagedObjectContext save:] will set 
> its argument to an NSError* whenever an error occurs.  Always check 
> its return BOOL value, because more commonly when it fails it 
> returns NO but does ^not^ set the NSError*.
>

Under what circumstances is it not setting an error?

mmalc