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.
18 lines
601 B
Plaintext
18 lines
601 B
Plaintext
error[E0277]: the trait bound `Self: Eq` is not satisfied
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--> $DIR/wf-trait-default-fn-arg.rs:11:22
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LL | struct Bar<T:Eq+?Sized> { value: Box<T> }
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| -- required by this bound in `Bar`
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...
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LL | fn bar(&self, x: &Bar<Self>) {
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| ^^^^^^^^^^ the trait `Eq` is not implemented for `Self`
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help: consider further restricting `Self`
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LL | fn bar(&self, x: &Bar<Self>) where Self: Eq {
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| ^^^^^^^^^^^^^^
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0277`.
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