typedef struct { int x, y; } Point; @interface TextContext - (void) mvvprintf: (Point) pos, string mft, @va_list args; @end @interface View { TextContext *textContext; } - (void) mvprintf: (Point) pos, string mft, ...; @end @implementation View - (void) mvprintf: (Point) pos, string fmt, ... { [textContext mvvprintf: pos, fmt, @args]; } @end id obj_msgSend (id receiver, SEL op, ...) = #0; void __obj_exec_class (struct obj_module *msg) = #0; @interface Object @end @implementation Object @end int main (void) { return 0; // to survive and prevail :) }