Potential leak of object stored in CGImageRef

Question

Running my code in Xcode Analyze ive came across the next block

- (UIImage *)imageWithFilter:(CIFilter *)filter { CIContext *ctx = [CIContext contextWithOptions:nil]; CGImageRef imageRef = [ctx createCGImage:filter.outputImage fromRect:CGRectMake(0, 0, self.size.width, self.size.height)]; return [UIImage imageWithCGImage:imageRef]; } 

Xcode complains about a potential memory leak:

What's happening? And how can I fix it?

Answer 1

The following looks like a fix, but not sure if this is the best way to handle this saved link?

 - (UIImage *)imageWithFilter:(CIFilter *)filter { CIContext *ctx = [CIContext contextWithOptions:nil]; CGImageRef imageRef = [ctx createCGImage:filter.outputImage fromRect:CGRectMake(0, 0, self.size.width, self.size.height)]; UIImage *image = [UIImage imageWithCGImage:imageRef]; CGImageRelease(imageRef); return image; }