LL | let _: f64 = -(8.0 as f64).exp(); // should suggest `-8.0_f64.exp()` here not to change code behavior
| ^^^^^^^^^^^^ help: try: `8.0_f64`
-error: aborting due to 29 previous errors
+error: casting to the same type is unnecessary (`f32` -> `f32`)
+ --> $DIR/unnecessary_cast.rs:112:20
+ |
+LL | let _num = foo() as f32;
+ | ^^^^^^^^^^^^ help: try: `foo()`
+
+error: aborting due to 30 previous errors