rust/tests/ui/specialization/defaultimpl/specialization-wfcheck.stderr

warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/specialization-wfcheck.rs:3:12
   |
LL | #![feature(specialization)]
   |            ^^^^^^^^^^^^^^
   |
   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
   = help: consider using `min_specialization` instead, which is more stable and complete
   = note: `#[warn(incomplete_features)]` on by default

error[E0277]: the trait bound `U: Eq` is not satisfied
  --> $DIR/specialization-wfcheck.rs:7:17
   |
LL | default impl<U> Foo<'static, U> for () {}
   |                 ^^^^^^^^^^^^^^^ the trait `Eq` is not implemented for `U`
   |
note: required by a bound in `Foo`
  --> $DIR/specialization-wfcheck.rs:5:18
   |
LL | trait Foo<'a, T: Eq + 'a> { }
   |                  ^^ required by this bound in `Foo`
help: consider restricting type parameter `U`
   |
LL | default impl<U: std::cmp::Eq> Foo<'static, U> for () {}
   |               ++++++++++++++

error: aborting due to previous error; 1 warning emitted

For more information about this error, try `rustc --explain E0277`.
bless all 2020-06-16 10:06:35 +02:00			warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
warn against 'specialization' feature 2020-05-17 10:22:48 +02:00			`--> $DIR/specialization-wfcheck.rs:3:12`
			`\|`
			`LL \| #![feature(specialization)]`
			`\| ^^^^^^^^^^^^^^`
			`\|`
			`= note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information`
Suggest minimal subset features in `incomplete_features` lint 2020-10-14 08:35:32 +09:00			= help: consider using `min_specialization` instead, which is more stable and complete
bless ui tests 2022-09-18 19:55:36 +04:00			= note: `#[warn(incomplete_features)]` on by default
warn against 'specialization' feature 2020-05-17 10:22:48 +02:00
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 10:40:56 +03:00			error[E0277]: the trait bound `U: Eq` is not satisfied
Remove licenses 2018-12-25 08:56:47 -07:00			`--> $DIR/specialization-wfcheck.rs:7:17`
Moved compile-fail tests to ui tests. 2018-08-08 14:28:26 +02:00			`\|`
			`LL \| default impl<U> Foo<'static, U> for () {}`
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			\| ^^^^^^^^^^^^^^^ the trait `Eq` is not implemented for `U`
Improve reporting errors and suggestions for trait bounds 2019-12-26 13:43:33 +01:00			`\|`
Use note to point at bound introducing requirement 2021-07-31 09:26:55 -07:00			note: required by a bound in `Foo`
			`--> $DIR/specialization-wfcheck.rs:5:18`
			`\|`
			`LL \| trait Foo<'a, T: Eq + 'a> { }`
			\| ^^ required by this bound in `Foo`
Tweak `suggest_constraining_type_param` Some of the bound restriction structured suggestions were incorrect while others had subpar output. 2020-03-13 19:28:14 -07:00			help: consider restricting type parameter `U`
Improve reporting errors and suggestions for trait bounds 2019-12-26 13:43:33 +01:00			`\|`
give full path of constraint in suggest_constraining_type_param revert file bless with nll mode 2021-03-30 17:56:39 +08:00			`LL \| default impl<U: std::cmp::Eq> Foo<'static, U> for () {}`
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 19:07:19 -07:00			`\| ++++++++++++++`
Moved compile-fail tests to ui tests. 2018-08-08 14:28:26 +02:00
warn against 'specialization' feature 2020-05-17 10:22:48 +02:00			`error: aborting due to previous error; 1 warning emitted`
Moved compile-fail tests to ui tests. 2018-08-08 14:28:26 +02:00
			For more information about this error, try `rustc --explain E0277`.