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
811 B
Plaintext
22 lines
811 B
Plaintext
error[E0277]: the size for values of type `Self` cannot be known at compilation time
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--> $DIR/issue-20005.rs:10:49
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LL | trait From<Src> {
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| --- required by this bound in `From`
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...
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LL | ) -> <Dst as From<Self>>::Result where Dst: From<Self> {
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| ^^^^^^^^^^ doesn't have a size known at compile-time
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help: consider further restricting `Self`
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LL | ) -> <Dst as From<Self>>::Result where Dst: From<Self>, Self: Sized {
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| ^^^^^^^^^^^^^
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help: consider relaxing the implicit `Sized` restriction
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LL | trait From<Src: ?Sized> {
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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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