1 error[E0128]: type parameters with a default cannot use forward declared identifiers
2 --> $DIR/issue-18183.rs:11:20
4 LL | pub struct Foo<Bar=Bar>(Bar); //~ ERROR E0128
5 | ^^^ defaulted type parameters cannot be forward declared
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0128`.