rust/tests/ui/array-slice-vec/vector-no-ann.stderr

error[E0282]: type annotations needed for `Vec<T>`
  --> $DIR/vector-no-ann.rs:2:9
   |
LL |     let _foo = Vec::new();
   |         ^^^^   ---------- type must be known at this point
   |
help: consider giving `_foo` an explicit type, where the type for type parameter `T` is specified
   |
LL |     let _foo: Vec<T> = Vec::new();
   |             ++++++++

error: aborting due to previous error

For more information about this error, try `rustc --explain E0282`.
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 02:40:56 -05:00			error[E0282]: type annotations needed for `Vec<T>`
add new `emit_inference_failure_err` 2022-02-14 06:25:26 -06:00			`--> $DIR/vector-no-ann.rs:2:9`
Move compile-fail tests with NOTE/HELP annotations to UI 2017-12-10 13:47:55 -06:00			`\|`
Update UI tests 2018-02-22 18:42:32 -06:00			`LL \| let _foo = Vec::new();`
Reorder fullfillment errors to keep more interesting ones first In `report_fullfillment_errors` push back `T: Sized`, `T: WellFormed` and coercion errors to the end of the list. The pre-existing deduplication logic eliminates redundant errors better that way, keeping the resulting output with fewer errors than before, while also having more detail. 2023-08-14 08:09:53 -05:00			`\| ^^^^ ---------- type must be known at this point`
add new `emit_inference_failure_err` 2022-02-14 06:25:26 -06:00			`\|`
			help: consider giving `_foo` an explicit type, where the type for type parameter `T` is specified
			`\|`
			`LL \| let _foo: Vec<T> = Vec::new();`
			`\| ++++++++`
Move compile-fail tests with NOTE/HELP annotations to UI 2017-12-10 13:47:55 -06:00
			`error: aborting due to previous error`

update tests 2018-03-03 08:59:40 -06:00			For more information about this error, try `rustc --explain E0282`.