mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-14 00:47:16 +00:00
f3cd81980d
If I understand it correctly, we were first creating a type with a
`RegionKind::ReErased` region and then deleted it again in
`util::implements_trait` with:
cx.tcx.erase_regions(&ty);
causing the type query to fail.
It looks like using `ReEmpty` works around that deletion.
200 lines
7.8 KiB
Text
200 lines
7.8 KiB
Text
error: this argument is passed by value, but not consumed in the function body
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--> $DIR/needless_pass_by_value.rs:16:23
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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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error: this argument is passed by value, but not consumed in the function body
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--> $DIR/needless_pass_by_value.rs:30:11
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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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--> $DIR/needless_pass_by_value.rs:30:22
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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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--> $DIR/needless_pass_by_value.rs:36:71
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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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--> $DIR/needless_pass_by_value.rs:48:18
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LL | fn test_match(x: Option<Option<String>>, y: Option<Option<String>>) {
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| ^^^^^^^^^^^^^^^^^^^^^^
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help: consider taking a reference instead
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LL | fn test_match(x: &Option<Option<String>>, y: Option<Option<String>>) {
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LL | match *x {
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error: this argument is passed by value, but not consumed in the function body
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--> $DIR/needless_pass_by_value.rs:61:24
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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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--> $DIR/needless_pass_by_value.rs:61:36
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LL | fn test_destructure(x: Wrapper, y: Wrapper, z: Wrapper) {
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| ^^^^^^^
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help: consider taking a reference instead
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LL | fn test_destructure(x: Wrapper, y: &Wrapper, z: Wrapper) {
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LL | let Wrapper(s) = z; // moved
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LL | let Wrapper(ref t) = *y; // not moved
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LL | let Wrapper(_) = *y; // still not moved
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error: this argument is passed by value, but not consumed in the function body
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--> $DIR/needless_pass_by_value.rs:77:49
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LL | fn test_blanket_ref<T: Foo, S: Serialize>(_foo: 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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--> $DIR/needless_pass_by_value.rs:79:18
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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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--> $DIR/needless_pass_by_value.rs:79:29
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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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--> $DIR/needless_pass_by_value.rs:79:40
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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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--> $DIR/needless_pass_by_value.rs:79:53
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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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--> $DIR/needless_pass_by_value.rs:92:12
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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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--> $DIR/needless_pass_by_value.rs:93:12
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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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--> $DIR/needless_pass_by_value.rs:102:23
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LL | fn baz(&self, _u: U, _s: 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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--> $DIR/needless_pass_by_value.rs:102:30
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LL | fn baz(&self, _u: U, _s: 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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--> $DIR/needless_pass_by_value.rs:124:24
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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: consider marking this type as Copy
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--> $DIR/needless_pass_by_value.rs:122:1
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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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--> $DIR/needless_pass_by_value.rs:130:29
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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: consider marking this type as Copy
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--> $DIR/needless_pass_by_value.rs:122:1
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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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--> $DIR/needless_pass_by_value.rs:130:45
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LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
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| ^^^^^^^^^^^
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help: consider marking this type as Copy
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--> $DIR/needless_pass_by_value.rs:122:1
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LL | struct CopyWrapper(u32);
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| ^^^^^^^^^^^^^^^^^^^^^^^^
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help: consider taking a reference instead
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LL | fn test_destructure_copy(x: CopyWrapper, y: &CopyWrapper, z: CopyWrapper) {
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LL | let CopyWrapper(s) = z; // moved
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LL | let CopyWrapper(ref t) = *y; // not moved
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LL | let CopyWrapper(_) = *y; // still not moved
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error: this argument is passed by value, but not consumed in the function body
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--> $DIR/needless_pass_by_value.rs:130:61
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LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: CopyWrapper) {
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| ^^^^^^^^^^^
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help: consider marking this type as Copy
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--> $DIR/needless_pass_by_value.rs:122:1
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LL | struct CopyWrapper(u32);
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| ^^^^^^^^^^^^^^^^^^^^^^^^
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help: consider taking a reference instead
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LL | fn test_destructure_copy(x: CopyWrapper, y: CopyWrapper, z: &CopyWrapper) {
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LL | let CopyWrapper(s) = *z; // moved
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error: this argument is passed by value, but not consumed in the function body
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--> $DIR/needless_pass_by_value.rs:142:40
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LL | fn some_fun<'b, S: Bar<'b, ()>>(_item: 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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--> $DIR/needless_pass_by_value.rs:147:20
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LL | fn more_fun(_item: 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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