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rust/tests/ui/issues/issue-42312.stderr

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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 02:40:56 -05:00
error[E0277]: the size for values of type `<Self as Deref>::Target` cannot be known at compilation time
Improve reporting errors and suggestions for trait bounds
2019-12-26 06:43:33 -06:00
--> $DIR/issue-42312.rs:4:12
Move some `compile-fail` tests to `ui`
2018-07-15 16:11:54 -05:00
|
LL | fn baz(_: Self::Target) where Self: Deref {}
Increase verbosity of bound restriction suggestions - Make the bound restriction suggestion `span_suggestion_verbose`. - Fix whitespace typo.
2020-04-22 18:31:58 -05:00
| ^ doesn't have a size known at compile-time
Move some `compile-fail` tests to `ui`
2018-07-15 16:11:54 -05:00
|
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 02:40:56 -05:00
= help: the trait `Sized` is not implemented for `<Self as Deref>::Target`
Add unsized_fn_params feature
2020-10-16 15:46:59 -05:00
= help: unsized fn params are gated as an unstable feature
Increase verbosity of bound restriction suggestions - Make the bound restriction suggestion `span_suggestion_verbose`. - Fix whitespace typo.
2020-04-22 18:31:58 -05:00
help: consider further restricting the associated type
|
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 02:40:56 -05:00
LL | fn baz(_: Self::Target) where Self: Deref, <Self as Deref>::Target: Sized {}
Modify structured suggestion output * On suggestions that include deletions, use a diff inspired output format * When suggesting addition, use `+` as underline * Color highlight modified span
2021-06-21 21:07:19 -05:00
| ++++++++++++++++++++++++++++++++
Suggest borrowing unsized argument types
2020-07-10 16:53:48 -05:00
help: function arguments must have a statically known size, borrowed types always have a known size
|
LL | fn baz(_: &Self::Target) where Self: Deref {}
Modify structured suggestion output * On suggestions that include deletions, use a diff inspired output format * When suggesting addition, use `+` as underline * Color highlight modified span
2021-06-21 21:07:19 -05:00
| +
Move some `compile-fail` tests to `ui`
2018-07-15 16:11:54 -05:00
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 02:40:56 -05:00
error[E0277]: the size for values of type `(dyn ToString + 'static)` cannot be known at compilation time
Improve reporting errors and suggestions for trait bounds
2019-12-26 06:43:33 -06:00
--> $DIR/issue-42312.rs:8:10
Move some `compile-fail` tests to `ui`
2018-07-15 16:11:54 -05:00
|
Update ui test suite to use dyn
2019-05-28 13:46:13 -05:00
LL | pub fn f(_: dyn ToString) {}
Improve reporting errors and suggestions for trait bounds
2019-12-26 06:43:33 -06:00
| ^ doesn't have a size known at compile-time
Move some `compile-fail` tests to `ui`
2018-07-15 16:11:54 -05:00
|
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 02:40:56 -05:00
= help: the trait `Sized` is not implemented for `(dyn ToString + 'static)`
Add unsized_fn_params feature
2020-10-16 15:46:59 -05:00
= help: unsized fn params are gated as an unstable feature
Tweak output for bare `dyn Trait` in arguments Fix #35825.
2022-12-14 20:51:55 -06:00
help: you can use `impl Trait` as the argument type
|
LL | pub fn f(_: impl ToString) {}
| ~~~~
Suggest borrowing unsized argument types
2020-07-10 16:53:48 -05:00
help: function arguments must have a statically known size, borrowed types always have a known size
|
LL | pub fn f(_: &dyn ToString) {}
Modify structured suggestion output * On suggestions that include deletions, use a diff inspired output format * When suggesting addition, use `+` as underline * Color highlight modified span
2021-06-21 21:07:19 -05:00
| +
Move some `compile-fail` tests to `ui`
2018-07-15 16:11:54 -05:00
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.
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