| error: no rules expected reserved identifier `_` | |
| --> $DIR/expr_2024_underscore_expr.rs:19:12 | |
| | | |
| LL | macro_rules! m2021 { | |
| | ------------------ when calling this macro | |
| ... | |
| LL | m2021!(_); | |
| | ^ no rules expected this token in macro call | |
| | | |
| note: while trying to match meta-variable `$e:expr_2021` | |
| --> $DIR/expr_2024_underscore_expr.rs:7:6 | |
| | | |
| LL | ($e:expr_2021) => { | |
| | ^^^^^^^^^^^^ | |
| error: aborting due to 1 previous error | |