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rust/tests/ui/on-unimplemented/slice-index.stderr

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Make `str` indexing generic on `SliceIndex`.
2019-01-14 08:10:45 -05:00
error[E0277]: the type `[i32]` cannot be indexed by `i32`
suggest dereferencing index when trying to use a reference of usize as index
2022-07-24 22:26:44 +09:00
--> $DIR/slice-index.rs:8:7
`rustc_on_unimplemented` supports referring to trait Add support to `rustc_on_unimplemented` to reference the full path of the annotated trait. For the following code: ```rust pub mod Bar { #[rustc_on_unimplemented = "test error `{Self}` with `{Bar}` `{Baz}` `{Quux}` in `{Foo}`"] pub trait Foo<Bar, Baz, Quux> {} } ``` the error message will be: ``` test error `std::string::String` with `u8` `_` `u32` in `Bar::Foo` ```
2017-06-30 17:06:51 -07:00
|
Update tests
2019-03-09 15:03:44 +03:00
LL | x[1i32];
suggest dereferencing index when trying to use a reference of usize as index
2022-07-24 22:26:44 +09:00
| ^^^^ slice indices are of type `usize` or ranges of `usize`
`rustc_on_unimplemented` supports referring to trait Add support to `rustc_on_unimplemented` to reference the full path of the annotated trait. For the following code: ```rust pub mod Bar { #[rustc_on_unimplemented = "test error `{Self}` with `{Bar}` `{Baz}` `{Quux}` in `{Foo}`"] pub trait Foo<Bar, Baz, Quux> {} } ``` the error message will be: ``` test error `std::string::String` with `u8` `_` `u32` in `Bar::Foo` ```
2017-06-30 17:06:51 -07:00
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Provide more context on derived obligation error primary label 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` | help: this trait has no implementations, consider adding one --> f100.rs:2:1 | 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.
2024-01-29 18:31:02 +00:00
= help: the trait `SliceIndex<[i32]>` is not implemented for `i32`, which is required by `[i32]: Index<_>`
For a single impl candidate, try to unify it with error trait ref
2023-09-10 03:21:52 +00:00
= help: the trait `SliceIndex<[i32]>` is implemented for `usize`
Point out the actual mismatch error
2023-09-10 03:33:07 +00:00
= help: for that trait implementation, expected `usize`, found `i32`
Reword "Required because of the requirements on the impl of ..."
2022-08-15 21:31:37 +01:00
= note: required for `[i32]` to implement `Index<i32>`
`rustc_on_unimplemented` supports referring to trait Add support to `rustc_on_unimplemented` to reference the full path of the annotated trait. For the following code: ```rust pub mod Bar { #[rustc_on_unimplemented = "test error `{Self}` with `{Bar}` `{Baz}` `{Quux}` in `{Foo}`"] pub trait Foo<Bar, Baz, Quux> {} } ``` the error message will be: ``` test error `std::string::String` with `u8` `_` `u32` in `Bar::Foo` ```
2017-06-30 17:06:51 -07:00
pretty: trim paths of unique symbols If a symbol name can only be imported from one place for a type, and as long as it was not glob-imported anywhere in the current crate, we can trim its printed path and print only the name. This has wide implications on error messages with types, for example, shortening `std::vec::Vec` to just `Vec`, as long as there is no other `Vec` importable anywhere. This adds a new '-Z trim-diagnostic-paths=false' option to control this feature. On the good path, with no diagnosis printed, we should try to avoid issuing this query, so we need to prevent trimmed_def_paths query on several cases. This change also relies on a previous commit that differentiates between `Debug` and `Display` on various rustc types, where the latter is trimmed and presented to the user and the former is not.
2020-09-02 10:40:56 +03:00
error[E0277]: the type `[i32]` cannot be indexed by `RangeTo<i32>`
suggest dereferencing index when trying to use a reference of usize as index
2022-07-24 22:26:44 +09:00
--> $DIR/slice-index.rs:9:7
`rustc_on_unimplemented` supports referring to trait Add support to `rustc_on_unimplemented` to reference the full path of the annotated trait. For the following code: ```rust pub mod Bar { #[rustc_on_unimplemented = "test error `{Self}` with `{Bar}` `{Baz}` `{Quux}` in `{Foo}`"] pub trait Foo<Bar, Baz, Quux> {} } ``` the error message will be: ``` test error `std::string::String` with `u8` `_` `u32` in `Bar::Foo` ```
2017-06-30 17:06:51 -07:00
|
Update tests
2019-03-09 15:03:44 +03:00
LL | x[..1i32];
suggest dereferencing index when trying to use a reference of usize as index
2022-07-24 22:26:44 +09:00
| ^^^^^^ slice indices are of type `usize` or ranges of `usize`
`rustc_on_unimplemented` supports referring to trait Add support to `rustc_on_unimplemented` to reference the full path of the annotated trait. For the following code: ```rust pub mod Bar { #[rustc_on_unimplemented = "test error `{Self}` with `{Bar}` `{Baz}` `{Quux}` in `{Foo}`"] pub trait Foo<Bar, Baz, Quux> {} } ``` the error message will be: ``` test error `std::string::String` with `u8` `_` `u32` in `Bar::Foo` ```
2017-06-30 17:06:51 -07:00
|
Provide more context on derived obligation error primary label 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` | help: this trait has no implementations, consider adding one --> f100.rs:2:1 | 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.
2024-01-29 18:31:02 +00:00
= help: the trait `SliceIndex<[i32]>` is not implemented for `RangeTo<i32>`, which is required by `[i32]: Index<_>`
Refer to the TraitRef::identity in the message to be clearer
2022-03-27 02:02:07 +00:00
= help: the following other types implement trait `SliceIndex<T>`:
Spell out other trait diagnostic
2024-06-07 14:54:42 +00:00
`RangeTo<usize>` implements `SliceIndex<[T]>`
`RangeTo<usize>` implements `SliceIndex<str>`
Reword "Required because of the requirements on the impl of ..."
2022-08-15 21:31:37 +01:00
= note: required for `[i32]` to implement `Index<RangeTo<i32>>`
`rustc_on_unimplemented` supports referring to trait Add support to `rustc_on_unimplemented` to reference the full path of the annotated trait. For the following code: ```rust pub mod Bar { #[rustc_on_unimplemented = "test error `{Self}` with `{Bar}` `{Baz}` `{Quux}` in `{Foo}`"] pub trait Foo<Bar, Baz, Quux> {} } ``` the error message will be: ``` test error `std::string::String` with `u8` `_` `u32` in `Bar::Foo` ```
2017-06-30 17:06:51 -07:00
error: aborting due to 2 previous errors
update tests
2018-03-03 15:59:40 +01:00
For more information about this error, try `rustc --explain E0277`.
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