rust/src/test/run-pass/issue-1257.rs

// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

pub fn main () {
  let mut line = "".to_string();
  let mut i = 0i;
  while line != "exit".to_string() {
    line = if i == 9 { "exit".to_string() } else { "notexit".to_string() };
    i += 1;
  }
}