Function abort

pub fn abort() -> !

Terminates the process in an abnormal fashion.

The function will never return and will immediately terminate the current process in a platform specific “abnormal” manner.

Note that because this function never returns, and that it terminates the process, no destructors on the current stack or any other thread’s stack will be run.

Rust IO buffers (eg, from BufWriter) will not be flushed. Likewise, C stdio buffers will (on most platforms) not be flushed.

This is in contrast to the default behavior of panic! which unwinds the current thread’s stack and calls all destructors. When panic="abort" is set, either as an argument to rustc or in a crate’s Cargo.toml, panic! and abort are similar. However, panic! will still call the panic hook while abort will not.

If a clean shutdown is needed it is recommended to only call this function at a known point where there are no more destructors left to run.

The process’s termination will be similar to that from the C abort() function. On Unix, the process will terminate with signal SIGABRT, which typically means that the shell prints “Aborted”.

Examples

use std::process;

fn main() {
    println!("aborting");

    process::abort();

    // execution never gets here
}

The abort function terminates the process, so the destructor will not get run on the example below:

use std::process;

struct HasDrop;

impl Drop for HasDrop {
    fn drop(&mut self) {
        println!("This will never be printed!");
    }
}

fn main() {
    let _x = HasDrop;
    process::abort();
    // the destructor implemented for HasDrop will never get run
}