| error[E0091]: type parameter `T` is never used | |
| --> $DIR/issue-17994.rs:2:10 | |
| | | |
| LL | type Huh<T> where T: Tr = isize; | |
| | ^ unused type parameter | |
| | | |
| = help: consider removing `T` or referring to it in the body of the type alias | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0091`. |