(no subject)

[Simon Marlow]

>     i use green-card with ghc's FFI export to sth like
>                      =20
>       Haskell  -----> C ------> Haskell
>=20
>     the program is just arithmatic operations. the program "seg fault"
> in the callback from C to Haskell. anyone whether it is a bug?

There aren't any known bugs, but there are many known pitfalls.  You'll
need to give us more information, at least: the code that causes the
crash (preferably a small example), the exact GHC command lines used to
compile it, your GHC version, your machine and OS version.

Cheers,
	Simon