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https://github.com/rust-lang/rust
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114 lines
4.6 KiB
Plaintext
114 lines
4.6 KiB
Plaintext
error[E0425]: cannot find value `bar` in this scope
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--> $DIR/not_wf_param_in_rpitit.rs:3:30
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LL | trait Trait<const N: Trait = bar> {
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| ^^^ not found in this scope
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error[E0391]: cycle detected when computing type of `Trait::N`
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--> $DIR/not_wf_param_in_rpitit.rs:3:22
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LL | trait Trait<const N: Trait = bar> {
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| ^^^^^
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= note: ...which immediately requires computing type of `Trait::N` again
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note: cycle used when computing explicit predicates of trait `Trait`
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--> $DIR/not_wf_param_in_rpitit.rs:3:1
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LL | trait Trait<const N: Trait = bar> {
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| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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= note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
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error[E0038]: the trait `Trait` cannot be made into an object
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--> $DIR/not_wf_param_in_rpitit.rs:3:22
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LL | trait Trait<const N: Trait = bar> {
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| ^^^^^ `Trait` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/not_wf_param_in_rpitit.rs:11:14
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LL | trait Trait<const N: Trait = bar> {
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| ----- this trait cannot be made into an object...
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...
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LL | async fn a() {}
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| ^ ...because associated function `a` has no `self` parameter
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help: consider turning `a` into a method by giving it a `&self` argument
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LL | async fn a(&self) {}
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| +++++
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help: alternatively, consider constraining `a` so it does not apply to trait objects
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LL | async fn a() where Self: Sized {}
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| +++++++++++++++++
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error[E0038]: the trait `Trait` cannot be made into an object
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--> $DIR/not_wf_param_in_rpitit.rs:3:13
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LL | trait Trait<const N: Trait = bar> {
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| ^^^^^^^^^^^^^^^^^^^^ `Trait` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/not_wf_param_in_rpitit.rs:11:14
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LL | trait Trait<const N: Trait = bar> {
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| ----- this trait cannot be made into an object...
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...
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LL | async fn a() {}
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| ^ ...because associated function `a` has no `self` parameter
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help: consider turning `a` into a method by giving it a `&self` argument
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LL | async fn a(&self) {}
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| +++++
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help: alternatively, consider constraining `a` so it does not apply to trait objects
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LL | async fn a() where Self: Sized {}
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| +++++++++++++++++
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error: `(dyn Trait<{const error}> + 'static)` is forbidden as the type of a const generic parameter
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--> $DIR/not_wf_param_in_rpitit.rs:3:22
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LL | trait Trait<const N: Trait = bar> {
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| ^^^^^
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= note: the only supported types are integers, `bool` and `char`
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error[E0038]: the trait `Trait` cannot be made into an object
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--> $DIR/not_wf_param_in_rpitit.rs:3:13
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LL | trait Trait<const N: Trait = bar> {
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| ^^^^^^^^^^^^^^^^^^^^ `Trait` cannot be made into an object
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note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
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--> $DIR/not_wf_param_in_rpitit.rs:11:14
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LL | trait Trait<const N: Trait = bar> {
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| ----- this trait cannot be made into an object...
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...
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LL | async fn a() {}
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| ^ ...because associated function `a` has no `self` parameter
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= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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help: consider turning `a` into a method by giving it a `&self` argument
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LL | async fn a(&self) {}
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| +++++
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help: alternatively, consider constraining `a` so it does not apply to trait objects
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LL | async fn a() where Self: Sized {}
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| +++++++++++++++++
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error[E0782]: trait objects must include the `dyn` keyword
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--> $DIR/not_wf_param_in_rpitit.rs:3:22
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LL | trait Trait<const N: Trait = bar> {
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| ^^^^^
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help: add `dyn` keyword before this trait
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LL | trait Trait<const N: dyn Trait = bar> {
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| +++
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error: aborting due to 7 previous errors
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Some errors have detailed explanations: E0038, E0391, E0425, E0782.
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For more information about an error, try `rustc --explain E0038`.
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