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.
21 lines
588 B
Plaintext
21 lines
588 B
Plaintext
error: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
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--> $DIR/missing_debug_impls.rs:7:1
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LL | pub enum A {}
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| ^^^^^^^^^^^^^
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note: the lint level is defined here
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--> $DIR/missing_debug_impls.rs:2:9
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LL | #![deny(missing_debug_implementations)]
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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error: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
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--> $DIR/missing_debug_impls.rs:20:1
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LL | pub struct Foo;
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| ^^^^^^^^^^^^^^^
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error: aborting due to 2 previous errors
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