[Haskell-cafe] Can my type be allowed as return type in FFI?

[Mauricio]

Hi,

When I do:

foreign import "nameOfFunction" nameOfFunction
  :: IO MyType

I can get a function that return MyType only if
it's a pointer or some of the C* type family. Is
it possible to write a new MyType and make it
allowed as a return type from foreign functions?
Is changing the compiler the only way to do that?

Thanks,
Maurício