You don't write those parts in C alone. You use something that shows the C is safe automatically, use tool that generates secure C from specs (eg Nail), and/ us

You don't write those parts in C alone. You use something that shows the C is safe automatically, use tool that generates secure C from specs (eg Nail), and/ use safe language that compiles to C. This way, you get benefits of C ecosystem without risks of totally using C.