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.
76 lines
3.0 KiB
Plaintext
76 lines
3.0 KiB
Plaintext
error[E0277]: the type `[isize]` cannot be indexed by `u8`
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--> $DIR/integral-indexing.rs:6:5
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LL | v[3u8];
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| ^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[isize]>` is not implemented for `u8`
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= note: required because of the requirements on the impl of `Index<u8>` for `Vec<isize>`
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error[E0277]: the type `[isize]` cannot be indexed by `i8`
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--> $DIR/integral-indexing.rs:7:5
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LL | v[3i8];
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| ^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[isize]>` is not implemented for `i8`
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= note: required because of the requirements on the impl of `Index<i8>` for `Vec<isize>`
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error[E0277]: the type `[isize]` cannot be indexed by `u32`
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--> $DIR/integral-indexing.rs:8:5
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LL | v[3u32];
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| ^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[isize]>` is not implemented for `u32`
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= note: required because of the requirements on the impl of `Index<u32>` for `Vec<isize>`
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error[E0277]: the type `[isize]` cannot be indexed by `i32`
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--> $DIR/integral-indexing.rs:9:5
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LL | v[3i32];
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| ^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[isize]>` is not implemented for `i32`
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= note: required because of the requirements on the impl of `Index<i32>` for `Vec<isize>`
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error[E0277]: the type `[u8]` cannot be indexed by `u8`
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--> $DIR/integral-indexing.rs:12:5
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LL | s.as_bytes()[3u8];
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| ^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[u8]>` is not implemented for `u8`
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= note: required because of the requirements on the impl of `Index<u8>` for `[u8]`
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error[E0277]: the type `[u8]` cannot be indexed by `i8`
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--> $DIR/integral-indexing.rs:13:5
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LL | s.as_bytes()[3i8];
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| ^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[u8]>` is not implemented for `i8`
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= note: required because of the requirements on the impl of `Index<i8>` for `[u8]`
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error[E0277]: the type `[u8]` cannot be indexed by `u32`
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--> $DIR/integral-indexing.rs:14:5
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LL | s.as_bytes()[3u32];
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| ^^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[u8]>` is not implemented for `u32`
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= note: required because of the requirements on the impl of `Index<u32>` for `[u8]`
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error[E0277]: the type `[u8]` cannot be indexed by `i32`
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--> $DIR/integral-indexing.rs:15:5
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LL | s.as_bytes()[3i32];
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| ^^^^^^^^^^^^^^^^^^ slice indices are of type `usize` or ranges of `usize`
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= help: the trait `SliceIndex<[u8]>` is not implemented for `i32`
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= note: required because of the requirements on the impl of `Index<i32>` for `[u8]`
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error: aborting due to 8 previous errors
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For more information about this error, try `rustc --explain E0277`.
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