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.
15 lines
531 B
Plaintext
15 lines
531 B
Plaintext
error[E0282]: type annotations needed for `Option<T>`
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--> $DIR/unboxed-closures-failed-recursive-fn-2.rs:16:32
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LL | let mut closure0 = None;
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| ------------ consider giving `closure0` the explicit type `Option<T>`, with the type parameters specified
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...
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LL | return c();
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| ^^^ cannot infer type
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= note: type must be known at this point
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0282`.
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