| error: macro requires a cfg-pattern as an argument | |
| --> $DIR/cfg.rs:2:5 | |
| | | |
| LL | cfg!(); | |
| | ^^^^^^^ cfg-pattern required | |
| error: expected identifier, found `123` | |
| --> $DIR/cfg.rs:3:10 | |
| | | |
| LL | cfg!(123); | |
| | ^^^ expected identifier | |
| error[E0565]: literal in `cfg` predicate value must be a string | |
| --> $DIR/cfg.rs:4:16 | |
| | | |
| LL | cfg!(foo = 123); | |
| | ^^^ | |
| error: aborting due to 3 previous errors | |
| For more information about this error, try `rustc --explain E0565`. |