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https://github.com/rust-lang/rust-clippy
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6371b308d8
`needless_pass_by_value` sometimes suggest marking the concerned type as `Copy`. Adding a `or` before this suggestion makes it clearer that this is not the second part of the original suggestion, but an alternative one.
179 lines
7.4 KiB
Text
179 lines
7.4 KiB
Text
error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:18:23
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LL | fn foo<T: Default>(v: Vec<T>, w: Vec<T>, mut x: Vec<T>, y: Vec<T>) -> Vec<T> {
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| ^^^^^^ help: consider changing the type to: `&[T]`
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= note: `-D clippy::needless-pass-by-value` implied by `-D warnings`
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= help: to override `-D warnings` add `#[allow(clippy::needless_pass_by_value)]`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:34:11
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LL | fn bar(x: String, y: Wrapper) {
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| ^^^^^^ help: consider changing the type to: `&str`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:34:22
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LL | fn bar(x: String, y: Wrapper) {
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| ^^^^^^^ help: consider taking a reference instead: `&Wrapper`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:42:71
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LL | fn test_borrow_trait<T: Borrow<str>, U: AsRef<str>, V>(t: T, u: U, v: V) {
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| ^ help: consider taking a reference instead: `&V`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:55:18
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LL | fn test_match(x: Option<Option<String>>, y: Option<Option<String>>) {
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| ^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&Option<Option<String>>`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:69:24
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LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
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| ^^^^^^^ help: consider taking a reference instead: `&Wrapper`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:69:36
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LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
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| ^^^^^^^ help: consider taking a reference instead: `&Wrapper`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:87:49
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LL | fn test_blanket_ref<T: Foo, S: Serialize>(vals: T, serializable: S) {}
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| ^ help: consider taking a reference instead: `&T`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:90:18
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LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
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| ^^^^^^ help: consider taking a reference instead: `&String`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:90:29
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LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
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| ^^^^^^
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help: consider changing the type to
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LL | fn issue_2114(s: String, t: &str, u: Vec<i32>, v: Vec<i32>) {
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| ~~~~
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help: change `t.clone()` to
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LL | let _ = t.to_string();
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| ~~~~~~~~~~~~~
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:90:40
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LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
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| ^^^^^^^^ help: consider taking a reference instead: `&Vec<i32>`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:90:53
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LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: Vec<i32>) {
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| ^^^^^^^^
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help: consider changing the type to
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LL | fn issue_2114(s: String, t: String, u: Vec<i32>, v: &[i32]) {
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| ~~~~~~
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help: change `v.clone()` to
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LL | let _ = v.to_owned();
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| ~~~~~~~~~~~~
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:107:12
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LL | s: String,
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| ^^^^^^ help: consider changing the type to: `&str`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:109:12
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LL | t: String,
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| ^^^^^^ help: consider taking a reference instead: `&String`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:119:23
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LL | fn baz(&self, uu: U, ss: Self) {}
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| ^ help: consider taking a reference instead: `&U`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:119:30
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LL | fn baz(&self, uu: U, ss: Self) {}
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| ^^^^ help: consider taking a reference instead: `&Self`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:143:24
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LL | fn bar_copy(x: u32, y: CopyWrapper) {
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| ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
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help: or consider marking this type as `Copy`
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--> tests/ui/needless_pass_by_value.rs:141:1
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LL | struct CopyWrapper(u32);
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| ^^^^^^^^^^^^^^^^^^
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:150:29
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LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
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| ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
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help: or consider marking this type as `Copy`
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--> tests/ui/needless_pass_by_value.rs:141:1
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LL | struct CopyWrapper(u32);
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| ^^^^^^^^^^^^^^^^^^
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:150:45
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LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
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| ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
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help: or consider marking this type as `Copy`
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--> tests/ui/needless_pass_by_value.rs:141:1
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LL | struct CopyWrapper(u32);
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| ^^^^^^^^^^^^^^^^^^
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:150:61
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LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
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| ^^^^^^^^^^^ help: consider taking a reference instead: `&CopyWrapper`
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help: or consider marking this type as `Copy`
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--> tests/ui/needless_pass_by_value.rs:141:1
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LL | struct CopyWrapper(u32);
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| ^^^^^^^^^^^^^^^^^^
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:165:40
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LL | fn some_fun<'b, S: Bar<'b, ()>>(items: S) {}
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| ^ help: consider taking a reference instead: `&S`
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error: this argument is passed by value, but not consumed in the function body
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--> tests/ui/needless_pass_by_value.rs:171:20
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LL | fn more_fun(items: impl Club<'static, i32>) {}
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| ^^^^^^^^^^^^^^^^^^^^^^^ help: consider taking a reference instead: `&impl Club<'static, i32>`
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error: aborting due to 22 previous errors
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