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.
9 lines
255 B
Rust
9 lines
255 B
Rust
fn main() {
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match None {
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Err(_) => ()
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//~^ ERROR mismatched types
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//~| expected enum `Option<_>`
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//~| found enum `std::result::Result<_, _>`
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//~| expected enum `Option`, found enum `std::result::Result`
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}
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}
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