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
778 B
Rust
23 lines
778 B
Rust
use std::cell::{Cell, RefCell};
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use std::rc::{Rc, Weak};
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use std::sync::mpsc::{Receiver, Sender};
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fn test<T: Sync>() {}
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fn main() {
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test::<Cell<i32>>();
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//~^ ERROR `Cell<i32>` cannot be shared between threads safely [E0277]
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test::<RefCell<i32>>();
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//~^ ERROR `RefCell<i32>` cannot be shared between threads safely [E0277]
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test::<Rc<i32>>();
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//~^ ERROR `Rc<i32>` cannot be shared between threads safely [E0277]
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test::<Weak<i32>>();
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//~^ ERROR `std::rc::Weak<i32>` cannot be shared between threads safely [E0277]
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test::<Receiver<i32>>();
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//~^ ERROR `std::sync::mpsc::Receiver<i32>` cannot be shared between threads safely [E0277]
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test::<Sender<i32>>();
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//~^ ERROR `Sender<i32>` cannot be shared between threads safely [E0277]
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}
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