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

Sorry, I'm not talking about how C implements passing structures to functions. The Haskell FFI can only bind functions that pass structures by pointer, not by value. So if you've got a C function that passes them by value then you need to write a wrapper function in C and bind to that.

This should definitely be in the documentation somewhere. I delayed some work for a few weeks with that :) Thanks a lot for making this clear. Maurício