CGImageRef Memory leak

Question

I\'m having a memory leak when using this custom method which returns a CGImageRef. I can\'t release \"cgImage\" properly because I have to return it. What chould I do ?

Answer 1

You can autorelease a Core Foundation-compatible object. it just looks a bit wonky. :)

The GC-safe way is like so:

CGImageRef image = ...;
if (image) {
    image = (CGImageRef)[[(id)image retain] autorelease];
    CGImageRelease(image);
}

The shortcut, which is safe on iOS but no longer safe on the Mac, is this:

CGImageRef image = ...;
if (image) {
    image = (CGImageRef)[(id)image autorelease];
}

Either one will place the image in an autorelease pool and prevent a leak.