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.
44 lines
956 B
Rust
44 lines
956 B
Rust
// run-rustfix
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#[allow(unused)]
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use std::fmt::Debug;
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// Rustfix should add this, or use `std::fmt::Debug` instead.
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#[allow(dead_code)]
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fn test_impl(t: impl Sized + Debug) {
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println!("{:?}", t);
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//~^ ERROR doesn't implement
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}
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#[allow(dead_code)]
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fn test_no_bounds<T: Debug>(t: T) {
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println!("{:?}", t);
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//~^ ERROR doesn't implement
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}
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#[allow(dead_code)]
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fn test_one_bound<T: Sized + Debug>(t: T) {
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println!("{:?}", t);
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//~^ ERROR doesn't implement
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}
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#[allow(dead_code)]
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fn test_no_bounds_where<X, Y>(x: X, y: Y) where X: std::fmt::Debug, Y: Debug {
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println!("{:?} {:?}", x, y);
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//~^ ERROR doesn't implement
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}
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#[allow(dead_code)]
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fn test_one_bound_where<X>(x: X) where X: Sized + Debug {
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println!("{:?}", x);
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//~^ ERROR doesn't implement
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}
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#[allow(dead_code)]
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fn test_many_bounds_where<X>(x: X) where X: Sized, X: Sized, X: Debug {
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println!("{:?}", x);
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//~^ ERROR doesn't implement
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}
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pub fn main() { }
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