Re: FFI Bug - Finalizer always called with NULL pointer?

Brian Hulley wrote:

Solved! By just using the following syntax, GHC compiles everything correctly:

foreign import ccall "&duma_releaseFont" -- absolutely vital for FunPtr functions duma_releaseFont :: FunPtr (Ptr RawFont -> IO ())

Yes, you're not the first person to trip over this one. I've done it myself, and it caused much head-scratching. I think we should probably emit a warning in this case - it's much more likely that you meant to import "&foo" as a FunPtr, than just "foo". Cheers, Simon