| error[E0391]: cycle detected when computing type of `Foo::T` |
| --> $DIR/issue-34373.rs:7:34 |
| | |
| LL | pub struct Foo<T = Box<dyn Trait<DefaultFoo>>>; |
| | ^^^^^^^^^^ |
| | |
| note: ...which requires expanding type alias `DefaultFoo`... |
| --> $DIR/issue-34373.rs:9:19 |
| | |
| LL | type DefaultFoo = Foo; |
| | ^^^ |
| = note: ...which again requires computing type of `Foo::T`, completing the cycle |
| note: cycle used when checking that `Foo` is well-formed |
| --> $DIR/issue-34373.rs:7:1 |
| | |
| LL | pub struct Foo<T = Box<dyn Trait<DefaultFoo>>>; |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| = 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 |
| |
| error[E0392]: type parameter `T` is never used |
| --> $DIR/issue-34373.rs:7:16 |
| | |
| LL | pub struct Foo<T = Box<dyn Trait<DefaultFoo>>>; |
| | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unused type parameter |
| | |
| = help: consider removing `T`, referring to it in a field, or using a marker such as `PhantomData` |
| = help: if you intended `T` to be a const parameter, use `const T: /* Type */` instead |
| |
| error: aborting due to 2 previous errors |
| |
| Some errors have detailed explanations: E0391, E0392. |
| For more information about an error, try `rustc --explain E0391`. |
