;;; An error occurred in function CSTRUCT-SLOT-INFO:

I have moved my SDL FFI bindings to a seperate package and are
receiving the following error when I try to set a variable in a
structure:

(setf (ct:cref sdl:SDL_Rect rectangle x) (random width))

;;; An error occurred in function CSTRUCT-SLOT-INFO:
;;; Error: Cannot access C type (STRUCT X SHORT Y SHORT W
UNSIGNED-SHORT H UNSIGNED-SHORT) with access X

The structure looks like this...

typedef struct {
	Sint16 x;
	Sint16 y;
	Uint16 w;
	Uint16 h;
} SDL_Rect;

I don't receive an error when I read from a structure, only write to
it. For example, this works just fine:

(eql sdl:SDL_MOUSEBUTTONDOWN (ct:cref sdl:SDL_Event sdl-event type)

where SDL_Event looks like this...

typedef struct {
	Uint8 type;
    Uint8 buffer[1023];
} SDL_Event;

....

The problem seems to be that while the struct is exported, the
variables are not. Can't work out why accessing the struct works, but
attempting to write to the struct doesn't.

Anyone have any ideas ?

-Luke


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