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.
17 lines
608 B
Plaintext
17 lines
608 B
Plaintext
error[E0308]: mismatched types
|
|
--> $DIR/issue-6458-4.rs:1:20
|
|
|
|
|
LL | fn foo(b: bool) -> Result<bool,String> {
|
|
| --- ^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found `()`
|
|
| |
|
|
| implicitly returns `()` as its body has no tail or `return` expression
|
|
LL | Err("bar".to_string());
|
|
| - help: consider removing this semicolon
|
|
|
|
|
= note: expected enum `std::result::Result<bool, String>`
|
|
found unit type `()`
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0308`.
|