error[E0412]: cannot find type `b` in this scope --> $DIR/issue-69401-trait-fn-no-body-ty-local.rs:4:53 | LL | fn fn_with_type_named_same_as_local_in_param(b: b); | ^ not found in this scope error: aborting due to previous error For more information about this error, try `rustc --explain E0412`.