Ctypes_ffi_stubsSourceval call :
string ->
(_, _ Ctypes_static.fn) Ctypes_ptr.Fat.t ->
callspec ->
(Ctypes_ptr.voidp -> (Stdlib.Obj.t * int) array -> unit) ->
(Ctypes_ptr.voidp -> 'a) ->
'atype boxedfn = | Done of Ctypes_ptr.voidp -> unit * callspec| Fn of Ctypes_ptr.voidp -> boxedfn