error[E0426]: use of undeclared label `'aaaaaa` --> $DIR/issue-73541-3.rs:4:29 | LL | 'aaaaab: loop { | ------- a label with a similar name exists but is unreachable LL | || { LL | loop { continue 'aaaaaa } | ^^^^^^^ undeclared label `'aaaaaa` error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0426`.