rust/src/test/run-fail/rt-set-exit-status-fail.rs

// error-pattern:whatever

fn main() {
    log(error, ~"whatever");
    // Setting the exit status only works when the scheduler terminates
    // normally. In this case we're going to fail, so instead of of
    // returning 50 the process will return the typical rt failure code.
    os::set_exit_status(50);
    fail;
}