//! `static mut` variables local to the entry point are safe to use
#![deny(unsafe_code)]
#![deny(warnings)]
#![no_main]
#![no_std]
extern crate cortex_m_rt as rt;
extern crate panic_halt;
use rt::entry;
#[entry]
fn main() -> ! {
static mut COUNT: u32 = 0;
loop {
*COUNT += 1;
}
}