#![no_main] #![no_std] extern crate lm3s6965; extern crate panic_halt; extern crate rtfm; use rtfm::app; #[app(device = lm3s6965)] const APP: () = { #[init] fn init() {} #[idle] fn idle(undef: u32) { //~^ ERROR `idle` must have type signature `[unsafe] fn() -> !` } };