error[E0426]: use of undeclared label `'x`
--> $DIR/hygienic-label-1.rs:2:19
|
-LL | () => { break 'x; } //~ ERROR use of undeclared label `'x`
- | ^^ did you mean `'x`?
+LL | () => { break 'x; }
+ | ^^ undeclared label `'x`
...
LL | 'x: loop { foo!() }
| ------ in this macro invocation