title: CG Raster Data - CGProviderCreateWithCopyOfData - Unable to Release?
body: <p>I am trying to find the source of a memory leak as detailed here :</p>
  
  <p><a href="https://stackoverflow.com/questions/20490736/unable-to-release-quartz-2d-and-core-text-created-images">Unable to Release Quartz 2D and Core Text created Images</a></p>
  
  <p>When I use instruments I can see that there is something called CG Raster Data steadily growing in size which is never released. </p>
  
  <p>Does anyone know what could be causing this and how to remedy ? It looks like this might be some sort of image caching, but is it possible to flush this from code ?</p>