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https://github.com/rust-lang/rust-clippy
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c88cb08afc
When there is are multiple references where one of the references isn't mutable then this results in a false-positive for `mut_mutex_lock` as it only checks the mutability of the first reference level. Fix this by using `peel_mid_ty_refs_is_mutable` which correctly determines whether the reference is ultimately mutable and thus whether `Mutex::get_lock()` can actually be used. Fixes #9854
17 lines
727 B
Text
17 lines
727 B
Text
error: calling `&mut Mutex::lock` unnecessarily locks an exclusive (mutable) reference
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--> tests/ui/mut_mutex_lock.rs:10:33
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LL | let mut value = value_mutex.lock().unwrap();
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| ^^^^ help: change this to: `get_mut`
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= note: `-D clippy::mut-mutex-lock` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::mut_mutex_lock)]`
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error: calling `&mut Mutex::lock` unnecessarily locks an exclusive (mutable) reference
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--> tests/ui/mut_mutex_lock.rs:15:43
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LL | let mut value = mut_ref_mut_ref_mutex.lock().unwrap();
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| ^^^^ help: change this to: `get_mut`
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error: aborting due to 2 previous errors
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