rust/tests/ui/issues/issue-22034.stderr

error[E0277]: expected a `Fn<()>` closure, found `()`
  --> $DIR/issue-22034.rs:8:16
   |
LL |         &mut *(ptr as *mut dyn Fn())
   |                ^^^ expected an `Fn<()>` closure, found `()`
   |
   = help: the trait `Fn<()>` is not implemented for `()`
   = note: wrap the `()` in a closure with no arguments: `|| { /* code */ }`
   = note: required for the cast from `()` to the object type `dyn Fn()`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
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 07:40:56 +00:00			error[E0277]: expected a `Fn<()>` closure, found `()`
Remove licenses 2018-12-25 15:56:47 +00:00			`--> $DIR/issue-22034.rs:8:16`
Move some `compile-fail` tests to `ui` 2018-07-15 21:11:54 +00:00			`\|`
Update ui test suite to use dyn 2019-05-28 18:46:13 +00:00			`LL \| &mut (ptr as mut dyn Fn())`
When closure with no arguments was expected, suggest wrapping 2018-08-12 19:21:53 +00:00			\| ^^^ expected an `Fn<()>` closure, found `()`
Move some `compile-fail` tests to `ui` 2018-07-15 21:11:54 +00:00			`\|`
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 07:40:56 +00:00			= help: the trait `Fn<()>` is not implemented for `()`
Add missing backticks in diagnostics note 2020-07-23 12:52:48 +00:00			= note: wrap the `()` in a closure with no arguments: `\|\| { /* code */ }`
Note concrete type being coerced into object 2022-06-20 04:04:06 +00:00			= note: required for the cast from `()` to the object type `dyn Fn()`
Move some `compile-fail` tests to `ui` 2018-07-15 21:11:54 +00:00
			`error: aborting due to previous error`

			For more information about this error, try `rustc --explain E0277`.