rust/src/test/run-fail/morestack4.rs

// error-pattern:explicit failure

// Just testing unwinding

use std;

fn getbig_and_fail(&&i: int) {
    let r = and_then_get_big_again(5);
    if i != 0 {
        getbig_and_fail(i - 1);
    } else {
        fail;
    }
}

class and_then_get_big_again {
  let x:int;
  new(x:int) {self.x = x;}
  drop {}
}

fn main() {
    do task::spawn || {
        getbig_and_fail(1);
    };
}