File: borrowck-pat-reassign-binding.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (15 lines) | stat: -rw-r--r-- 421 bytes parent folder | download | duplicates (15) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
 
fn main() {
    let mut x: Option<isize> = None;
    match x {
      None => {
          // Note: on this branch, no borrow has occurred.
          x = Some(0);
      }
      Some(ref i) => {
          // But on this branch, `i` is an outstanding borrow
          x = Some(*i+1); //~ ERROR cannot assign to `x` because it is borrowed
          drop(i);
      }
    }
    x.clone(); // just to prevent liveness warnings
}