UIImage imageWithData leak (GCD)

Question

Hi I am getting a reported leak from Instrument with the following code.

dispatch_async(requestQueue, ^{

        NSURL *urlRequest = [NSURL URLWithString:url];

        NSError *error = nil;
        NSData *imageData = [NSData dataWithContentsOfURL:urlRequest
                                                  options:0
                                                    error:&error];
        if (error != nil)
        {
            NSLog(@"%@ %@", [error localizedDescription], [error localizedFailureReason]);

            [[[[UIAlertView alloc] initWithTitle:[error localizedDescription]
                                         message:[error localizedFailureReason]
                                        delegate:nil
                               cancelButtonTitle:NSLocalizedString(@"OK", nil)
                               otherButtonTitles:nil] autorelease] show];
            return;
        }

        dispatch_async(dispatch_get_main_queue(), ^{

            image = [UIImage imageWithData:imageData];
            if (delegate != nil && [delegate respondsToSelector:@selector(imageRequestDone:)])              
            {
                [delegate imageRequestDone:image];
            }
        });
    }); 

Leaks reports that my image = [UIImage imageWithData:imageData] leaks, any ideas why? Do I need to a NSAutoreleasePool for the autoreleased UIImage object?

Btw, If its matter, I declared __block UIImage *image = nil; above because I check for the image in an ImageCache before entering the code above.

Answer 1

You haven't released your queue: dispatch_release(requestQueue);