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rust/tests/ui/did_you_mean/bad-assoc-ty.stderr

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error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:1:10
|
LL | type A = [u8; 4]::AssocTy;
| ^^^^^^^
|
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | type A = <[u8; 4]>::AssocTy;
| + +
error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:5:10
|
LL | type B = [u8]::AssocTy;
| ^^^^
|
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | type B = <[u8]>::AssocTy;
| + +
error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:9:10
|
LL | type C = (u8)::AssocTy;
| ^^^^
|
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | type C = <(u8)>::AssocTy;
| + +
error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:13:10
|
LL | type D = (u8, u8)::AssocTy;
| ^^^^^^^^
|
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | type D = <(u8, u8)>::AssocTy;
| + +
error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:17:10
|
LL | type E = _::AssocTy;
| ^
|
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | type E = <_>::AssocTy;
| + +
error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:21:19
|
LL | type F = &'static (u8)::AssocTy;
| ^^^^
|
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | type F = &'static <(u8)>::AssocTy;
| + +
error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:27:10
|
LL | type G = dyn 'static + (Send)::AssocTy;
| ^^^^^^^^^^^^^^^^^^^^
|
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | type G = <dyn 'static + (Send)>::AssocTy;
| + +
error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:46:10
|
LL | type I = ty!()::AssocTy;
| ^^^^^
|
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | type I = <ty!()>::AssocTy;
| + +
error: missing angle brackets in associated item path
--> $DIR/bad-assoc-ty.rs:39:19
|
LL | ($ty: ty) => ($ty::AssocTy);
| ^^^
...
LL | type J = ty!(u8);
| ------- in this macro invocation
|
= note: this error originates in the macro `ty` (in Nightly builds, run with -Z macro-backtrace for more info)
help: types that don't start with an identifier need to be surrounded with angle brackets in qualified paths
|
LL | ($ty: ty) => (<$ty>::AssocTy);
| + +
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:1:10
|
LL | type A = [u8; 4]::AssocTy;
| ^^^^^^^^^^^^^^^^
|
help: if there were a trait named `Example` with associated type `AssocTy` implemented for `[u8; 4]`, you could use the fully-qualified path
|
LL | type A = <[u8; 4] as Example>::AssocTy;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:5:10
|
LL | type B = [u8]::AssocTy;
| ^^^^^^^^^^^^^
|
help: if there were a trait named `Example` with associated type `AssocTy` implemented for `[u8]`, you could use the fully-qualified path
|
LL | type B = <[u8] as Example>::AssocTy;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:9:10
|
LL | type C = (u8)::AssocTy;
| ^^^^^^^^^^^^^
|
help: if there were a trait named `Example` with associated type `AssocTy` implemented for `u8`, you could use the fully-qualified path
|
LL | type C = <u8 as Example>::AssocTy;
| ~~~~~~~~~~~~~~~~~~~~~~~~
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:13:10
|
LL | type D = (u8, u8)::AssocTy;
| ^^^^^^^^^^^^^^^^^
|
help: if there were a trait named `Example` with associated type `AssocTy` implemented for `(u8, u8)`, you could use the fully-qualified path
|
LL | type D = <(u8, u8) as Example>::AssocTy;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error[E0121]: the placeholder `_` is not allowed within types on item signatures for type aliases
--> $DIR/bad-assoc-ty.rs:17:10
|
LL | type E = _::AssocTy;
| ^ not allowed in type signatures
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:21:19
|
LL | type F = &'static (u8)::AssocTy;
| ^^^^^^^^^^^^^
|
help: if there were a trait named `Example` with associated type `AssocTy` implemented for `u8`, you could use the fully-qualified path
|
LL | type F = &'static <u8 as Example>::AssocTy;
| ~~~~~~~~~~~~~~~~~~~~~~~~
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:27:10
|
LL | type G = dyn 'static + (Send)::AssocTy;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
help: if there were a trait named `Example` with associated type `AssocTy` implemented for `(dyn Send + 'static)`, you could use the fully-qualified path
|
LL | type G = <(dyn Send + 'static) as Example>::AssocTy;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
warning: trait objects without an explicit `dyn` are deprecated
--> $DIR/bad-assoc-ty.rs:33:10
|
LL | type H = Fn(u8) -> (u8)::Output;
| ^^^^^^^^^^^^^^
|
= warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
= note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
= note: `#[warn(bare_trait_objects)]` on by default
help: if this is an object-safe trait, use `dyn`
|
LL | type H = <dyn Fn(u8) -> (u8)>::Output;
| ++++ +
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:33:10
|
LL | type H = Fn(u8) -> (u8)::Output;
| ^^^^^^^^^^^^^^^^^^^^^^
|
help: use fully-qualified syntax
|
LL | type H = <(dyn Fn(u8) -> u8 + 'static) as BitOr>::Output;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
LL | type H = <(dyn Fn(u8) -> u8 + 'static) as IntoFuture>::Output;
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:39:19
|
LL | ($ty: ty) => ($ty::AssocTy);
| ^^^^^^^^^^^^
...
LL | type J = ty!(u8);
| ------- in this macro invocation
|
= note: this error originates in the macro `ty` (in Nightly builds, run with -Z macro-backtrace for more info)
help: if there were a trait named `Example` with associated type `AssocTy` implemented for `u8`, you could use the fully-qualified path
|
LL | ($ty: ty) => (<u8 as Example>::AssocTy);
| ~~~~~~~~~~~~~~~~~~~~~~~~
error[E0223]: ambiguous associated type
--> $DIR/bad-assoc-ty.rs:46:10
|
LL | type I = ty!()::AssocTy;
| ^^^^^^^^^^^^^^
|
help: if there were a trait named `Example` with associated type `AssocTy` implemented for `u8`, you could use the fully-qualified path
|
LL | type I = <u8 as Example>::AssocTy;
| ~~~~~~~~~~~~~~~~~~~~~~~~
error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
--> $DIR/bad-assoc-ty.rs:51:13
|
LL | fn foo<X: K<_, _>>(x: X) {}
| ^ ^ not allowed in type signatures
| |
| not allowed in type signatures
|
help: use type parameters instead
|
LL | fn foo<X: K<T, T>, T>(x: X) {}
| ~ ~ +++
error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
--> $DIR/bad-assoc-ty.rs:54:34
|
LL | fn bar<F>(_: F) where F: Fn() -> _ {}
| ^ not allowed in type signatures
|
help: use type parameters instead
|
LL | fn bar<F, T>(_: F) where F: Fn() -> T {}
| +++ ~
error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
--> $DIR/bad-assoc-ty.rs:57:19
|
LL | fn baz<F: Fn() -> _>(_: F) {}
| ^ not allowed in type signatures
|
help: use type parameters instead
|
LL | fn baz<F: Fn() -> T, T>(_: F) {}
| ~+++
error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs
--> $DIR/bad-assoc-ty.rs:60:33
|
LL | struct L<F>(F) where F: Fn() -> _;
| ^ not allowed in type signatures
|
help: use type parameters instead
|
LL | struct L<F, T>(F) where F: Fn() -> T;
| +++ ~
error[E0121]: the placeholder `_` is not allowed within types on item signatures for functions
--> $DIR/bad-assoc-ty.rs:82:38
|
LL | fn foo<F>(_: F) where F: Fn() -> _ {}
| ^ not allowed in type signatures
|
help: use type parameters instead
|
LL | fn foo<F, T>(_: F) where F: Fn() -> T {}
| +++ ~
error[E0121]: the placeholder `_` is not allowed within types on item signatures for structs
--> $DIR/bad-assoc-ty.rs:62:30
|
LL | struct M<F> where F: Fn() -> _ {
| ^ not allowed in type signatures
|
help: use type parameters instead
|
LL | struct M<F, T> where F: Fn() -> T {
| +++ ~
error[E0121]: the placeholder `_` is not allowed within types on item signatures for enums
--> $DIR/bad-assoc-ty.rs:66:28
|
LL | enum N<F> where F: Fn() -> _ {
| ^ not allowed in type signatures
|
help: use type parameters instead
|
LL | enum N<F, T> where F: Fn() -> T {
| +++ ~
error[E0121]: the placeholder `_` is not allowed within types on item signatures for unions
--> $DIR/bad-assoc-ty.rs:71:29
|
LL | union O<F> where F: Fn() -> _ {
| ^ not allowed in type signatures
|
help: use type parameters instead
|
LL | union O<F, T> where F: Fn() -> T {
| +++ ~
error[E0740]: field must implement `Copy` or be wrapped in `ManuallyDrop<...>` to be used in a union
--> $DIR/bad-assoc-ty.rs:73:5
|
LL | foo: F,
| ^^^^^^
|
= note: union fields must not have drop side-effects, which is currently enforced via either `Copy` or `ManuallyDrop<...>`
help: wrap the field type in `ManuallyDrop<...>`
|
LL | foo: std::mem::ManuallyDrop<F>,
| +++++++++++++++++++++++ +
error[E0121]: the placeholder `_` is not allowed within types on item signatures for traits
--> $DIR/bad-assoc-ty.rs:77:29
|
LL | trait P<F> where F: Fn() -> _ {
| ^ not allowed in type signatures
|
help: use type parameters instead
|
LL | trait P<F, T> where F: Fn() -> T {
| +++ ~
error: aborting due to 29 previous errors; 1 warning emitted
Some errors have detailed explanations: E0121, E0223, E0740.
For more information about an error, try `rustc --explain E0121`.
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