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error[E0053]: method `eq` has an incompatible type for trait
--> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:10:30
|
LL | type Foo = impl PartialEq<(Foo, i32)>;
| -------------------------- the found opaque type
...
LL | fn eq(&self, _other: &(Foo, i32)) -> bool {
| ^^^^^^^^^^^ expected `a::Bar`, found opaque type
|
= note: expected signature `fn(&a::Bar, &(a::Bar, _)) -> _`
found signature `fn(&a::Bar, &(a::Foo, _)) -> _`
help: change the parameter type to match the trait
|
LL - fn eq(&self, _other: &(Foo, i32)) -> bool {
LL + fn eq(&self, _other: &(a::Bar, i32)) -> bool {
|
error: item does not constrain `a::Foo::{opaque#0}`
--> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:10:12
|
LL | fn eq(&self, _other: &(Foo, i32)) -> bool {
| ^^
|
= note: consider removing `#[define_opaque]` or adding an empty `#[define_opaque()]`
note: this opaque type is supposed to be constrained
--> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:4:16
|
LL | type Foo = impl PartialEq<(Foo, i32)>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0053]: method `eq` has an incompatible type for trait
--> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:25:30
|
LL | type Foo = impl PartialEq<(Foo, i32)>;
| -------------------------- the expected opaque type
...
LL | fn eq(&self, _other: &(Bar, i32)) -> bool {
| ^^^^^^^^^^^ expected opaque type, found `b::Bar`
|
= note: expected signature `fn(&b::Bar, &(b::Foo, _)) -> _`
found signature `fn(&b::Bar, &(b::Bar, _)) -> _`
note: this item must have a `#[define_opaque(b::Foo)]` attribute to be able to define hidden types
--> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:25:12
|
LL | fn eq(&self, _other: &(Bar, i32)) -> bool {
| ^^
help: change the parameter type to match the trait
|
LL - fn eq(&self, _other: &(Bar, i32)) -> bool {
LL + fn eq(&self, _other: &(b::Foo, i32)) -> bool {
|
error: unconstrained opaque type
--> $DIR/recursive-type-alias-impl-trait-declaration-too-subtle.rs:19:16
|
LL | type Foo = impl PartialEq<(Foo, i32)>;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: `Foo` must be used in combination with a concrete type within the same crate
error: aborting due to 4 previous errors
For more information about this error, try `rustc --explain E0053`.
|
