#![no_main] #![no_std] extern crate cortex_m_rt; extern crate panic_halt; use cortex_m_rt::{entry, exception, ExceptionFrame}; #[entry] fn foo() -> ! { loop {} } #[exception(trampoline = false)] unsafe fn HardFault() -> ! { loop {} } pub mod reachable { use cortex_m_rt::{exception, ExceptionFrame}; #[exception] //~ ERROR symbol `_HardFault` is already defined unsafe fn HardFault(_ef: &ExceptionFrame) -> ! { loop {} } }