warning: label name `'b` shadows a label name that is already in scope | |
--> $DIR/macro-lifetime-used-with-labels.rs:21:9 | |
| | |
LL | 'b: loop { | |
| ^^ lifetime 'b already in scope | |
... | |
LL | 'b: loop { | |
| -- first declared here | |
LL | br2!('b); | |
| --------- in this macro invocation | |