Leak in managedObjectContext save:

Question

Hi

I have the following piece of code and when I use Instruments/Object Allocations, it tells me that there is a leak there (which goes down to sqlite3MemMalloc). Is there something that I should release?

if (![managedObjectContext save:&error]) {
  NSLog(@"Error while saving.");
}

The save works well and doesn't trigger an error.

Answer 1

The leak is most likely in one of the managed objects being saved and it just shows here. If you look at the stack in Instruments you can probably see the leaking object. Since it only shows up at save, it's probably in validation code.

Answer 2

Do you have any subclasses of your NSManagedObject instances?

When you set a value into your NSManagedObject instances do you then release your ownership of them? For example if you were do to the following code:

NSString *someString = [[NSString alloc] initWithString:@"Blah"];
[myManagedObject setValue:someString forKey:@"stringValue"];

You would be leaking memory because you are still owning that NSString. That is what TechZen is referring to above.