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.
47 lines
2.2 KiB
Plaintext
47 lines
2.2 KiB
Plaintext
error[E0308]: mismatched types
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--> $DIR/conversion-methods.rs:5:41
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LL | let _tis_an_instants_play: String = "'Tis a fond Ambush—";
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| ------ ^^^^^^^^^^^^^^^^^^^^^
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| | |
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| | expected struct `String`, found `&str`
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| | help: try using a conversion method: `"'Tis a fond Ambush—".to_string()`
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| expected due to this
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error[E0308]: mismatched types
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--> $DIR/conversion-methods.rs:6:40
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LL | let _just_to_make_bliss: PathBuf = Path::new("/ern/her/own/surprise");
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| ------- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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| | |
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| | expected struct `PathBuf`, found `&Path`
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| | help: try using a conversion method: `Path::new("/ern/her/own/surprise").to_path_buf()`
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| expected due to this
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error[E0308]: mismatched types
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--> $DIR/conversion-methods.rs:9:40
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LL | let _but_should_the_play: String = 2; // Perhaps surprisingly, we suggest .to_string() here
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| ------ ^
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| | expected struct `String`, found integer
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| | help: try using a conversion method: `2.to_string()`
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| expected due to this
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error[E0308]: mismatched types
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--> $DIR/conversion-methods.rs:12:47
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LL | let _prove_piercing_earnest: Vec<usize> = &[1, 2, 3];
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| ---------- ^^^^^^^^^^
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| | |
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| | expected struct `Vec`, found `&[{integer}; 3]`
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| | help: try using a conversion method: `(&[1, 2, 3]).to_vec()`
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| expected due to this
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= note: expected struct `Vec<usize>`
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found reference `&[{integer}; 3]`
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error: aborting due to 4 previous errors
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For more information about this error, try `rustc --explain E0308`.
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