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21e7463bf8
Don't suggest changing `&self` and `&mut self` in function signature to be mutable when taking `&mut self` in closure Current suggestion for when taking a mutable reference to `self` in a closure (as an upvar) will produce a machine-applicable suggestion to change the `self` in the function signature to `mut self`, but does not account for the specialness of implicit self in that it can already have `&` and `&mut` (see #111554). This causes the function signature to become `test(&mut mut self)` which does not seem desirable. ``` error[E0596]: cannot borrow `self` as mutable, as it is not declared as mutable --> src/sound_player.rs:870:11 | 869 | pub fn test(&mut self) { | ---- help: consider changing this to be mutable: `mut self` 870 | || test2(&mut self); | ^^^^^^^^^ cannot borrow as mutable ``` This PR suppresses the "changing this to be mutable" suggestion if the implicit self is either `ImplicitSelfKind::ImmRef` or `ImplicitSelfKind::MutRef`. Fixes #111554. |
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