Make ops::DerefMut a diagnostic item
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@relaxcn Why would it be a good idea to allow such calls in Deref(Mut) impls? |
Reference to rust-lang/rust-clippy#15392, I think it is make sense to me. |
Urgau
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Oct 13, 2025
| /// *x = 'b'; | ||
| /// assert_eq!('b', x.value); | ||
| /// ``` | ||
| #[lang = "deref_mut"] |
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DerefMut already has a lang item, can you use LangItem::DeferMut instead?
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I'm working on an enhancement to clippy::explicit_deref_methods, which would allow explicit
dereforderef_mutmethod calls in implementation of the theDereforDerefMuttrait, so I need aDerefMutdiagnostic item to check if we are already in the impl ofDerefMuttrait.