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.
30 lines
1.3 KiB
Plaintext
30 lines
1.3 KiB
Plaintext
error[E0010]: allocations are not allowed in statics
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--> $DIR/issue-7364.rs:6:37
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LL | static boxed: Box<RefCell<isize>> = box RefCell::new(0);
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| ^^^^^^^^^^^^^^^^^^^ allocation not allowed in statics
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error[E0019]: static contains unimplemented expression type
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--> $DIR/issue-7364.rs:6:41
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LL | static boxed: Box<RefCell<isize>> = box RefCell::new(0);
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| ^^^^^^^^^^^^^^^
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= help: add `#![feature(const_mut_refs)]` to the crate attributes to enable
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error[E0277]: `RefCell<isize>` cannot be shared between threads safely
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--> $DIR/issue-7364.rs:6:1
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LL | static boxed: Box<RefCell<isize>> = box RefCell::new(0);
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `RefCell<isize>` cannot be shared between threads safely
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= help: the trait `Sync` is not implemented for `RefCell<isize>`
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= note: required because of the requirements on the impl of `Sync` for `Unique<RefCell<isize>>`
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= note: required because it appears within the type `Box<RefCell<isize>>`
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= note: shared static variables must have a type that implements `Sync`
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error: aborting due to 3 previous errors
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Some errors have detailed explanations: E0010, E0019, E0277.
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For more information about an error, try `rustc --explain E0010`.
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