File: match-ref-binding-mut-option.rs

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rustc 1.88.0%2Bdfsg1-1
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//@ run-pass

pub fn main() {
    let mut v = Some(22);
    match v {
      None => {}
      Some(ref mut p) => { *p += 1; }
    }
    assert_eq!(v, Some(23));
}