mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-23 15:23:46 +00:00
64 lines
3.2 KiB
Plaintext
64 lines
3.2 KiB
Plaintext
warning: call to `.clone()` on a reference in this situation does nothing
|
|
--> $DIR/noop-method-call.rs:15:71
|
|
|
|
|
LL | let non_clone_type_ref_clone: &PlainType<u32> = non_clone_type_ref.clone();
|
|
| ^^^^^^^^ unnecessary method call
|
|
|
|
|
= note: the type `&PlainType<u32>` which `clone` is being called on is the same as the type returned from `clone`, so the method call does not do anything and can be removed
|
|
= note: `#[warn(noop_method_call)]` on by default
|
|
|
|
warning: using `.clone()` on a double reference, which returns `&CloneType<u32>` instead of cloning the inner type
|
|
--> $DIR/noop-method-call.rs:22:63
|
|
|
|
|
LL | let clone_type_ref_clone: &CloneType<u32> = clone_type_ref.clone();
|
|
| ^^^^^^^^
|
|
|
|
|
= note: `#[warn(suspicious_double_ref_op)]` on by default
|
|
|
|
warning: call to `.deref()` on a reference in this situation does nothing
|
|
--> $DIR/noop-method-call.rs:26:63
|
|
|
|
|
LL | let non_deref_type_deref: &PlainType<u32> = non_deref_type.deref();
|
|
| ^^^^^^^^ unnecessary method call
|
|
|
|
|
= note: the type `&PlainType<u32>` which `deref` is being called on is the same as the type returned from `deref`, so the method call does not do anything and can be removed
|
|
|
|
warning: using `.deref()` on a double reference, which returns `&PlainType<u32>` instead of dereferencing the inner type
|
|
--> $DIR/noop-method-call.rs:30:63
|
|
|
|
|
LL | let non_deref_type_deref: &PlainType<u32> = non_deref_type.deref();
|
|
| ^^^^^^^^
|
|
|
|
warning: call to `.borrow()` on a reference in this situation does nothing
|
|
--> $DIR/noop-method-call.rs:34:66
|
|
|
|
|
LL | let non_borrow_type_borrow: &PlainType<u32> = non_borrow_type.borrow();
|
|
| ^^^^^^^^^ unnecessary method call
|
|
|
|
|
= note: the type `&PlainType<u32>` which `borrow` is being called on is the same as the type returned from `borrow`, so the method call does not do anything and can be removed
|
|
|
|
warning: using `.clone()` on a double reference, which returns `&str` instead of cloning the inner type
|
|
--> $DIR/noop-method-call.rs:42:44
|
|
|
|
|
LL | let _v: Vec<&str> = xs.iter().map(|x| x.clone()).collect(); // could use `*x` instead
|
|
| ^^^^^^^^
|
|
|
|
warning: call to `.clone()` on a reference in this situation does nothing
|
|
--> $DIR/noop-method-call.rs:47:19
|
|
|
|
|
LL | non_clone_type.clone();
|
|
| ^^^^^^^^ unnecessary method call
|
|
|
|
|
= note: the type `&PlainType<T>` which `clone` is being called on is the same as the type returned from `clone`, so the method call does not do anything and can be removed
|
|
|
|
warning: call to `.clone()` on a reference in this situation does nothing
|
|
--> $DIR/noop-method-call.rs:52:19
|
|
|
|
|
LL | non_clone_type.clone();
|
|
| ^^^^^^^^ unnecessary method call
|
|
|
|
|
= note: the type `&PlainType<u32>` which `clone` is being called on is the same as the type returned from `clone`, so the method call does not do anything and can be removed
|
|
|
|
warning: 8 warnings emitted
|
|
|