// option. This file may not be copied, modified, or distributed
// except according to those terms.
-// ignore-pretty -- comments are unfaithfully preserved
-
#![allow(unused_variable)]
#![allow(dead_assignment)]
-fn cond() -> bool { fail!() }
-fn link<'a>(v: &'a uint, w: &mut &'a uint) -> bool { *w = v; true }
-
fn separate_arms() {
// Here both arms perform assignments, but only is illegal.
None => {
// It is ok to reassign x here, because there is in
// fact no outstanding loan of x!
- x = Some(0);
+ x = Some(0i);
}
Some(ref _i) => {
- x = Some(1); //~ ERROR cannot assign
+ x = Some(1i); //~ ERROR cannot assign
}
}
x.clone(); // just to prevent liveness warnings
}
-fn guard() {
- // Here the guard performs a borrow. This borrow "infects" all
- // subsequent arms (but not the prior ones).
-
- let mut a = box 3;
- let mut b = box 4;
- let mut w = &*a;
- match 22 {
- _ if cond() => {
- b = box 5;
- }
-
- _ if link(&*b, &mut w) => {
- b = box 6; //~ ERROR cannot assign
- }
-
- _ => {
- b = box 7; //~ ERROR cannot assign
- }
- }
-
- b = box 8; //~ ERROR cannot assign
-}
-
fn main() {}