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.
23 lines
799 B
Plaintext
23 lines
799 B
Plaintext
error[E0308]: mismatched types
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--> $DIR/trait-associated-constant.rs:21:5
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LL | const AC: Option<&'c str> = None;
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ lifetime mismatch
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= note: expected enum `Option<&'b str>`
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found enum `Option<&'c str>`
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note: the lifetime `'c` as defined on the impl at 20:18...
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--> $DIR/trait-associated-constant.rs:20:18
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LL | impl<'a: 'b, 'b, 'c> Anything<'a, 'b> for FailStruct {
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| ^^
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note: ...does not necessarily outlive the lifetime `'b` as defined on the impl at 20:14
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--> $DIR/trait-associated-constant.rs:20:14
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LL | impl<'a: 'b, 'b, 'c> Anything<'a, 'b> for FailStruct {
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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 E0308`.
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