# Return a `RuntimeVarible` to C user code
	private fun ret_to_c(src: RuntimeVariable, mtype: MType)
	do
		if mtype.is_cprimitive then
			add("return {src};")
		else
			add("struct nitni_instance* ret_for_c;")
			add("ret_for_c = nit_alloc(sizeof(struct nitni_instance));")
			add("ret_for_c->value = {src};")
			add("return ret_for_c;")
		end
	end