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.
22 lines
792 B
Plaintext
22 lines
792 B
Plaintext
error[E0308]: `match` arms have incompatible types
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--> $DIR/issue-17728.rs:109:14
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LL | / match to_parse {
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LL | | "w" | "west" => RoomDirection::West,
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LL | | "e" | "east" => RoomDirection::East,
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LL | | "n" | "north" => RoomDirection::North,
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... |
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LL | | "down" => RoomDirection::Down,
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| | ------------------- this and all prior arms are found to be of type `RoomDirection`
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LL | | _ => None
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| | ^^^^ expected enum `RoomDirection`, found enum `Option`
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LL | | }
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| |_____- `match` arms have incompatible types
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= note: expected enum `RoomDirection`
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found enum `Option<_>`
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0308`.
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