src/test/ui/reachable/expr_loop.rs

   1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 #![allow(unused_variables)]
  12 #![allow(unused_assignments)]
  13 #![allow(dead_code)]
  14 #![deny(unreachable_code)]
  15
  16 fn a() {
  17     loop { return; }
  18     println!("I am dead.");
  19 }
  20
  21 fn b() {
  22     loop {
  23         break;
  24     }
  25     println!("I am not dead.");
  26 }
  27
  28 fn c() {
  29     loop { return; }
  30     println!("I am dead.");
  31 }
  32
  33 fn d() {
  34     'outer: loop { loop { break 'outer; } }
  35     println!("I am not dead.");
  36 }
  37
  38 fn e() {
  39     loop { 'middle: loop { loop { break 'middle; } } }
  40     println!("I am dead.");
  41 }
  42
  43 fn main() { }