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6efddac288
Expand the primary span of E0277 when the immediate unmet bound is not what the user wrote:
```
error[E0277]: the trait bound `i32: Bar` is not satisfied
--> f100.rs:6:6
|
6 | <i32 as Foo>::foo();
| ^^^ the trait `Bar` is not implemented for `i32`, which is required by `i32: Foo`
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help: this trait has no implementations, consider adding one
--> f100.rs:2:1
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2 | trait Bar {}
| ^^^^^^^^^
note: required for `i32` to implement `Foo`
--> f100.rs:3:14
|
3 | impl<T: Bar> Foo for T {}
| --- ^^^ ^
| |
| unsatisfied trait bound introduced here
```
Fix #40120.
323 lines
12 KiB
Plaintext
323 lines
12 KiB
Plaintext
error[E0308]: mismatched types
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--> $DIR/binary-op-suggest-deref.rs:6:12
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LL | if i < 0 {}
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| ^ expected `&i64`, found integer
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help: consider dereferencing the borrow
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LL | if *i < 0 {}
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| +
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error[E0277]: can't compare `&&{integer}` with `{integer}`
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--> $DIR/binary-op-suggest-deref.rs:15:13
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LL | _ = foo == 0;
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| ^^ no implementation for `&&{integer} == {integer}`
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= help: the trait `PartialEq<{integer}>` is not implemented for `&&{integer}`
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help: consider dereferencing here
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LL | _ = **foo == 0;
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| ++
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error[E0277]: can't compare `&{integer}` with `{integer}`
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--> $DIR/binary-op-suggest-deref.rs:17:13
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LL | _ = foo == &0;
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| ^^ no implementation for `&{integer} == {integer}`
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= help: the trait `PartialEq<{integer}>` is not implemented for `&{integer}`, which is required by `&&{integer}: PartialEq<&{integer}>`
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= note: required for `&&{integer}` to implement `PartialEq<&{integer}>`
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help: consider dereferencing here
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LL | _ = *foo == &0;
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| +
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error[E0277]: can't compare `&&&&&&{integer}` with `{integer}`
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--> $DIR/binary-op-suggest-deref.rs:19:17
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LL | _ = &&&&foo == 0;
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| ^^ no implementation for `&&&&&&{integer} == {integer}`
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= help: the trait `PartialEq<{integer}>` is not implemented for `&&&&&&{integer}`
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help: consider removing the borrows and dereferencing instead
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LL - _ = &&&&foo == 0;
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LL + _ = **foo == 0;
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error[E0277]: can't compare `&{integer}` with `{integer}`
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--> $DIR/binary-op-suggest-deref.rs:21:14
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LL | _ = *foo == 0;
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| ^^ no implementation for `&{integer} == {integer}`
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= help: the trait `PartialEq<{integer}>` is not implemented for `&{integer}`
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help: consider dereferencing here
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LL | _ = **foo == 0;
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| +
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error[E0277]: can't compare `&&{integer}` with `{integer}`
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--> $DIR/binary-op-suggest-deref.rs:23:15
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LL | _ = &&foo == &&0;
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| ^^ no implementation for `&&{integer} == {integer}`
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= help: the trait `PartialEq<{integer}>` is not implemented for `&&{integer}`, which is required by `&&&&{integer}: PartialEq<&&{integer}>`
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= note: required for `&&&{integer}` to implement `PartialEq<&{integer}>`
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= note: 1 redundant requirement hidden
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= note: required for `&&&&{integer}` to implement `PartialEq<&&{integer}>`
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help: consider removing the borrows
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LL - _ = &&foo == &&0;
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LL + _ = foo == &&0;
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error[E0277]: can't compare `&Box<{integer}>` with `{integer}`
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--> $DIR/binary-op-suggest-deref.rs:25:23
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LL | _ = &Box::new(42) == 42;
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| ^^ no implementation for `&Box<{integer}> == {integer}`
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= help: the trait `PartialEq<{integer}>` is not implemented for `&Box<{integer}>`
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help: consider removing the borrow and dereferencing instead
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LL - _ = &Box::new(42) == 42;
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LL + _ = *Box::new(42) == 42;
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error[E0277]: can't compare `&Box<&Box<&{integer}>>` with `{integer}`
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--> $DIR/binary-op-suggest-deref.rs:27:35
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LL | _ = &Box::new(&Box::new(&42)) == 42;
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| ^^ no implementation for `&Box<&Box<&{integer}>> == {integer}`
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= help: the trait `PartialEq<{integer}>` is not implemented for `&Box<&Box<&{integer}>>`
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help: consider removing the borrow and dereferencing instead
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LL - _ = &Box::new(&Box::new(&42)) == 42;
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LL + _ = ****Box::new(&Box::new(&42)) == 42;
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error[E0277]: can't compare `{integer}` with `&&{integer}`
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--> $DIR/binary-op-suggest-deref.rs:31:11
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LL | _ = 0 == foo;
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| ^^ no implementation for `{integer} == &&{integer}`
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= help: the trait `PartialEq<&&{integer}>` is not implemented for `{integer}`
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help: consider dereferencing here
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LL | _ = 0 == **foo;
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| ++
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error[E0277]: can't compare `{integer}` with `&{integer}`
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--> $DIR/binary-op-suggest-deref.rs:33:12
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LL | _ = &0 == foo;
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| ^^ no implementation for `{integer} == &{integer}`
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= help: the trait `PartialEq<&{integer}>` is not implemented for `{integer}`, which is required by `&{integer}: PartialEq<&&{integer}>`
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= note: required for `&{integer}` to implement `PartialEq<&&{integer}>`
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help: consider dereferencing here
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LL | _ = &0 == *foo;
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| +
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error[E0277]: can't compare `{integer}` with `&&&&&&{integer}`
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--> $DIR/binary-op-suggest-deref.rs:35:11
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LL | _ = 0 == &&&&foo;
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| ^^ no implementation for `{integer} == &&&&&&{integer}`
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= help: the trait `PartialEq<&&&&&&{integer}>` is not implemented for `{integer}`
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help: consider removing the borrows and dereferencing instead
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LL - _ = 0 == &&&&foo;
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LL + _ = 0 == **foo;
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error[E0277]: can't compare `{integer}` with `&{integer}`
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--> $DIR/binary-op-suggest-deref.rs:37:11
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LL | _ = 0 == *foo;
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| ^^ no implementation for `{integer} == &{integer}`
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= help: the trait `PartialEq<&{integer}>` is not implemented for `{integer}`
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help: consider dereferencing here
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LL | _ = 0 == **foo;
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| +
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error[E0277]: can't compare `{integer}` with `&&{integer}`
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--> $DIR/binary-op-suggest-deref.rs:39:13
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LL | _ = &&0 == &&foo;
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| ^^ no implementation for `{integer} == &&{integer}`
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= help: the trait `PartialEq<&&{integer}>` is not implemented for `{integer}`, which is required by `&&{integer}: PartialEq<&&&&{integer}>`
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= note: required for `&{integer}` to implement `PartialEq<&&&{integer}>`
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= note: 1 redundant requirement hidden
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= note: required for `&&{integer}` to implement `PartialEq<&&&&{integer}>`
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help: consider removing the borrows
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LL - _ = &&0 == &&foo;
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LL + _ = &&0 == foo;
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error[E0277]: can't compare `Box<Box<{integer}>>` with `&&{integer}`
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--> $DIR/binary-op-suggest-deref.rs:43:33
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LL | _ = &Box::new(Box::new(42)) == &foo;
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| ^^ no implementation for `Box<Box<{integer}>> == &&{integer}`
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= help: the trait `PartialEq<&&{integer}>` is not implemented for `Box<Box<{integer}>>`, which is required by `&Box<Box<{integer}>>: PartialEq<&&&{integer}>`
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= note: required for `&Box<Box<{integer}>>` to implement `PartialEq<&&&{integer}>`
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help: consider dereferencing both sides of the expression
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LL - _ = &Box::new(Box::new(42)) == &foo;
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LL + _ = **Box::new(Box::new(42)) == **foo;
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error[E0277]: can't compare `Box<{integer}>` with `&&{integer}`
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--> $DIR/binary-op-suggest-deref.rs:45:23
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LL | _ = &Box::new(42) == &foo;
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| ^^ no implementation for `Box<{integer}> == &&{integer}`
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= help: the trait `PartialEq<&&{integer}>` is not implemented for `Box<{integer}>`, which is required by `&Box<{integer}>: PartialEq<&&&{integer}>`
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= note: required for `&Box<{integer}>` to implement `PartialEq<&&&{integer}>`
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help: consider dereferencing both sides of the expression
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LL - _ = &Box::new(42) == &foo;
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LL + _ = *Box::new(42) == **foo;
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error[E0277]: can't compare `Box<Box<Box<Box<{integer}>>>>` with `&&{integer}`
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--> $DIR/binary-op-suggest-deref.rs:47:53
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LL | _ = &Box::new(Box::new(Box::new(Box::new(42)))) == &foo;
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| ^^ no implementation for `Box<Box<Box<Box<{integer}>>>> == &&{integer}`
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= help: the trait `PartialEq<&&{integer}>` is not implemented for `Box<Box<Box<Box<{integer}>>>>`, which is required by `&Box<Box<Box<Box<{integer}>>>>: PartialEq<&&&{integer}>`
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= note: required for `&Box<Box<Box<Box<{integer}>>>>` to implement `PartialEq<&&&{integer}>`
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help: consider dereferencing both sides of the expression
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LL - _ = &Box::new(Box::new(Box::new(Box::new(42)))) == &foo;
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LL + _ = ****Box::new(Box::new(Box::new(Box::new(42)))) == **foo;
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error[E0277]: can't compare `&&{integer}` with `Box<Box<Box<Box<{integer}>>>>`
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--> $DIR/binary-op-suggest-deref.rs:49:14
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LL | _ = &foo == &Box::new(Box::new(Box::new(Box::new(42))));
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| ^^ no implementation for `&&{integer} == Box<Box<Box<Box<{integer}>>>>`
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= help: the trait `PartialEq<Box<Box<Box<Box<{integer}>>>>>` is not implemented for `&&{integer}`, which is required by `&&&{integer}: PartialEq<&Box<Box<Box<Box<{integer}>>>>>`
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= note: required for `&&&{integer}` to implement `PartialEq<&Box<Box<Box<Box<{integer}>>>>>`
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help: consider dereferencing both sides of the expression
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LL - _ = &foo == &Box::new(Box::new(Box::new(Box::new(42))));
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LL + _ = **foo == ****Box::new(Box::new(Box::new(Box::new(42))));
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error[E0308]: mismatched types
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--> $DIR/binary-op-suggest-deref.rs:53:25
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LL | _ = Box::new(42) == 42;
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| ------------ ^^ expected `Box<{integer}>`, found integer
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| expected because this is `Box<{integer}>`
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= note: expected struct `Box<{integer}>`
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found type `{integer}`
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= note: for more on the distinction between the stack and the heap, read https://doc.rust-lang.org/book/ch15-01-box.html, https://doc.rust-lang.org/rust-by-example/std/box.html, and https://doc.rust-lang.org/std/boxed/index.html
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help: store this in the heap by calling `Box::new`
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LL | _ = Box::new(42) == Box::new(42);
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| +++++++++ +
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error[E0277]: can't compare `&&{integer}` with `Foo`
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--> $DIR/binary-op-suggest-deref.rs:58:13
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LL | _ = &&0 == Foo;
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| ^^ no implementation for `&&{integer} == Foo`
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= help: the trait `PartialEq<Foo>` is not implemented for `&&{integer}`
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= help: the following other types implement trait `PartialEq<Rhs>`:
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isize
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i8
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i16
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i32
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i64
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i128
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usize
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u8
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and 6 others
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error[E0369]: binary operation `==` cannot be applied to type `Foo`
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--> $DIR/binary-op-suggest-deref.rs:60:13
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LL | _ = Foo == &&0;
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| --- ^^ --- &&{integer}
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| Foo
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note: an implementation of `PartialEq<&&{integer}>` might be missing for `Foo`
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--> $DIR/binary-op-suggest-deref.rs:57:5
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LL | struct Foo;
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| ^^^^^^^^^^ must implement `PartialEq<&&{integer}>`
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error[E0277]: can't compare `&String` with `str`
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--> $DIR/binary-op-suggest-deref.rs:69:20
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LL | _ = string_ref == partial[..3];
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| ^^ no implementation for `&String == str`
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= help: the trait `PartialEq<str>` is not implemented for `&String`
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help: consider dereferencing here
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LL | _ = *string_ref == partial[..3];
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error[E0277]: can't compare `str` with `&String`
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--> $DIR/binary-op-suggest-deref.rs:71:22
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LL | _ = partial[..3] == string_ref;
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| ^^ no implementation for `str == &String`
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= help: the trait `PartialEq<&String>` is not implemented for `str`
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help: consider dereferencing here
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LL | _ = partial[..3] == *string_ref;
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error[E0277]: no implementation for `i32 & str`
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--> $DIR/binary-op-suggest-deref.rs:78:17
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LL | let _ = FOO & (*"Sized".to_string().into_boxed_str());
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| ^ no implementation for `i32 & str`
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= help: the trait `BitAnd<str>` is not implemented for `i32`
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= help: the following other types implement trait `BitAnd<Rhs>`:
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<i32 as BitAnd>
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<i32 as BitAnd<&i32>>
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<&'a i32 as BitAnd<i32>>
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<&i32 as BitAnd<&i32>>
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error[E0277]: the size for values of type `str` cannot be known at compilation time
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--> $DIR/binary-op-suggest-deref.rs:78:17
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LL | let _ = FOO & (*"Sized".to_string().into_boxed_str());
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| ^ doesn't have a size known at compile-time
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= help: the trait `Sized` is not implemented for `str`
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error: aborting due to 24 previous errors
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Some errors have detailed explanations: E0277, E0308, E0369.
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For more information about an error, try `rustc --explain E0277`.
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