Re: Finalizers and FFI

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import Foreign.ForeignPtr

I couldn't get finalisers to work either with the newForeignPtr from this module. I didn't know how to create a proper FunPtr.

You create a FunPtr using foreign import: foreign import ccall "malloc.h &free" free_ptr :: FunPtr (Ptr a -> IO ())

In Foreign.Concurrent there is a newForeignPtr that is easier to use:

But, sadly, not portable. -- Alastair Reid