rust/src/test/run-pass/nested-alts.rs

use std;
import std::option::*;

fn baz() -> ! {
  fail;
}

fn foo() {
   alt (some[int](5)) {
     case (some[int](?x)) {
       auto bar;
       alt (none[int]) {
         case (none[int]) {
           bar = 5;
         }
         case (_) {
           baz();
         }
       }
       log bar;
     }
     case (none[int]) {
       log "hello";
     }
   }
}

fn main() {
  foo();
}