On Mon, Jul 07, 2003 at 07:31:13PM +0100, Alastair Reid wrote:
the discussion on ForeignPtrs without finalizers didn't come to a
conclusion. I specifically need the nullForeignPtr which was easy enough
with the FFI of GHC 5.04:
[...]
do I have to create a dummy C function?
Yes,
The need for nullForeignPtr arises when a function expects
a pointer to some data structure or a null pointer. In this case I cannot
make the foreign import have the type (Maybe (ForeignPtr ()) since it's not
accepted by the FFI.
I guess I've mostly used this trick with GreenCard whcih
