| error[E0428]: the name `b` is defined multiple times | |
| --> $DIR/issue-58490.rs:18:5 | |
| | | |
| LL | macro_rules! b { () => () } | |
| | -------------- previous definition of the macro `b` here | |
| ... | |
| LL | macro_rules! b { () => () } | |
| | ^^^^^^^^^^^^^^ `b` redefined here | |
| | | |
| = note: `b` must be defined only once in the macro namespace of this module | |
| error: aborting due to 1 previous error | |
| For more information about this error, try `rustc --explain E0428`. |