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
779 B
Plaintext
22 lines
779 B
Plaintext
error[E0425]: cannot find value `u` in this scope
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--> $DIR/issues-71798.rs:6:24
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LL | let _ = test_ref & u;
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| ^ not found in this scope
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error[E0277]: `u32` is not a future
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--> $DIR/issues-71798.rs:1:25
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LL | fn test_ref(x: &u32) -> impl std::future::Future<Output = u32> + '_ {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `u32` is not a future
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LL | *x
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| -- this returned value is of type `u32`
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= help: the trait `Future` is not implemented for `u32`
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= note: the return type of a function must have a statically known size
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error: aborting due to 2 previous errors
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Some errors have detailed explanations: E0277, E0425.
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For more information about an error, try `rustc --explain E0277`.
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