unused_assignments lint false positive

[TimNN]

The following code produces an unused_assignment warning (playground):

fn main() {
    let mut done = false;
    while !done {
        done = true;
        continue;
    }
}

warning: value assigned to `done` is never read
 --> src/main.rs:4:9
  |
4 |         done = true;
  |         ^^^^
  |
  = note: #[warn(unused_assignments)] on by default

[steveklabnik]

Triage: no change

[dchammond]

Bumping: This issue has not yet been fixed.

[yuval-k]

Is this bug easy to fix? i would love to help, but have no idea where to start :)
Any pointers? even just the general direction of where to look would be great.

Thanks!

[oli-obk]

@yuval-k You can search the codebase for UNUSED_ASSIGNMENTS. There should be 2 or 3 mentions. The one that is surrounded by a span_lint call is where everything happens. From there you can go backwards to find out when that code is actually called.

[Amanieu]

Just hit this today, still an issue.