rust/src/test/run-pass/deep.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.




fn f(x: int) -> int {
    if x == 1 { return 1; } else { let y: int = 1 + f(x - 1); return y; }
}

pub fn main() { assert!((f(5000) == 5000)); }