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.
9 lines
445 B
Text
9 lines
445 B
Text
error[E0321]: cross-crate traits with a default impl, like `Send`, can only be implemented for a struct/enum type, not `&'static Foo`
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--> $DIR/empty_span.rs:7:5
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LL | unsafe impl Send for &'static Foo { }
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't implement cross-crate trait with a default impl for non-struct/enum type
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0321`.
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