os-rust/tests/ui/minus-string.rs

// error-pattern:cannot apply unary operator `-` to type `String`

fn main() { -"foo".to_string(); }
pretty: trim paths of unique symbols 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. 2020-09-02 10:40:56 +03:00			// error-pattern:cannot apply unary operator `-` to type `String`
Properly typecheck unary minus Closes #813 2011-08-12 16:05:56 +02:00
std: Rename strbuf operations to string [breaking-change] 2014-05-25 03:17:19 -07:00			`fn main() { -"foo".to_string(); }`