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.
16 lines
843 B
Plaintext
16 lines
843 B
Plaintext
error[E0599]: no method named `to_string` found for raw pointer `*const u8` in the current scope
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--> $DIR/issue-21596.rs:4:22
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LL | println!("{}", z.to_string());
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| ^^^^^^^^^ method not found in `*const u8`
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= note: try using `<*const T>::as_ref()` to get a reference to the type behind the pointer: https://doc.rust-lang.org/std/primitive.pointer.html#method.as_ref
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= note: using `<*const T>::as_ref()` on a pointer which is unaligned or points to invalid or uninitialized memory is undefined behavior
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= note: the method `to_string` exists but the following trait bounds were not satisfied:
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`*const u8: std::fmt::Display`
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which is required by `*const u8: ToString`
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error: aborting due to previous error
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For more information about this error, try `rustc --explain E0599`.
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