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.
14 lines
457 B
Text
14 lines
457 B
Text
error[E0308]: mismatched types
|
|
--> $DIR/pattern-tyvar.rs:5:18
|
|
|
|
|
LL | match t {
|
|
| - this expression has type `Bar`
|
|
LL | Bar::T1(_, Some::<isize>(x)) => {
|
|
| ^^^^^^^^^^^^^^^^ expected struct `Vec`, found `isize`
|
|
|
|
|
= note: expected enum `Option<Vec<isize>>`
|
|
found enum `Option<isize>`
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0308`.
|