07e7823c01
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.
57 lines
1.9 KiB
Text
57 lines
1.9 KiB
Text
error[E0033]: type `&dyn T` cannot be dereferenced
|
|
--> $DIR/destructure-trait-ref.rs:26:9
|
|
|
|
|
LL | let &x = &1isize as &dyn T;
|
|
| ^^ type `&dyn T` cannot be dereferenced
|
|
|
|
error[E0033]: type `&dyn T` cannot be dereferenced
|
|
--> $DIR/destructure-trait-ref.rs:27:10
|
|
|
|
|
LL | let &&x = &(&1isize as &dyn T);
|
|
| ^^ type `&dyn T` cannot be dereferenced
|
|
|
|
error[E0033]: type `Box<dyn T>` cannot be dereferenced
|
|
--> $DIR/destructure-trait-ref.rs:28:9
|
|
|
|
|
LL | let box x = box 1isize as Box<dyn T>;
|
|
| ^^^^^ type `Box<dyn T>` cannot be dereferenced
|
|
|
|
error[E0308]: mismatched types
|
|
--> $DIR/destructure-trait-ref.rs:32:10
|
|
|
|
|
LL | let &&x = &1isize as &dyn T;
|
|
| ^^ ----------------- this expression has type `&dyn T`
|
|
| |
|
|
| expected trait object `dyn T`, found reference
|
|
| help: you can probably remove the explicit borrow: `x`
|
|
|
|
|
= note: expected trait object `dyn T`
|
|
found reference `&_`
|
|
|
|
error[E0308]: mismatched types
|
|
--> $DIR/destructure-trait-ref.rs:36:11
|
|
|
|
|
LL | let &&&x = &(&1isize as &dyn T);
|
|
| ^^ -------------------- this expression has type `&&dyn T`
|
|
| |
|
|
| expected trait object `dyn T`, found reference
|
|
| help: you can probably remove the explicit borrow: `x`
|
|
|
|
|
= note: expected trait object `dyn T`
|
|
found reference `&_`
|
|
|
|
error[E0308]: mismatched types
|
|
--> $DIR/destructure-trait-ref.rs:40:13
|
|
|
|
|
LL | let box box x = box 1isize as Box<dyn T>;
|
|
| ^^^^^ ------------------------ this expression has type `Box<dyn T>`
|
|
| |
|
|
| expected trait object `dyn T`, found struct `Box`
|
|
|
|
|
= note: expected trait object `dyn T`
|
|
found struct `Box<_>`
|
|
|
|
error: aborting due to 6 previous errors
|
|
|
|
Some errors have detailed explanations: E0033, E0308.
|
|
For more information about an error, try `rustc --explain E0033`.
|