// ignore-test :sadface: it's not possible to prevent this user error at compile time
// see rust-lang/rust#53975 for details
#![no_main]
#![no_std]
extern crate cortex_m_rt;
extern crate panic_halt;
mod hidden {
use cortex_m_rt::entry;
// this function needs to be "reachable" (all modules between it and the crate root must be
// `pub`) or linking will fail
#[entry]
fn foo() -> ! { //~ ERROR function is never used
loop {}
}
}
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