1error: removing an expression is not supported in this position 2 --> $DIR/cfg-non-opt-expr.rs:5:13 3 | 4LL | let _ = #[cfg(unset)] (); 5 | ^^^^^^^^^^^^^ 6 7error: removing an expression is not supported in this position 8 --> $DIR/cfg-non-opt-expr.rs:7:21 9 | 10LL | let _ = 1 + 2 + #[cfg(unset)] 3; 11 | ^^^^^^^^^^^^^ 12 13error: removing an expression is not supported in this position 14 --> $DIR/cfg-non-opt-expr.rs:9:23 15 | 16LL | let _ = [1, 2, 3][#[cfg(unset)] 1]; 17 | ^^^^^^^^^^^^^ 18 19error: aborting due to 3 previous errors 20 21