error[E0609]: no field `opts` on type `*const Session`
  --> $DIR/parenthesized-deref-suggestion.rs:7:30
   |
LL |     (sess as *const Session).opts;
   |                              ^^^^ unknown field
   |
help: the value is a raw pointer; try dereferencing it
   |
LL |     (*(sess as *const Session)).opts;
   |     ++                        +

error[E0609]: no field `0` on type `[u32; 1]`
  --> $DIR/parenthesized-deref-suggestion.rs:10:21
   |
LL |     (x as [u32; 1]).0;
   |                     ^ unknown field
   |
help: instead of using tuple indexing, use array indexing
   |
LL |     (x as [u32; 1])[0];
   |                    ~ +

error: aborting due to 2 previous errors

For more information about this error, try `rustc --explain E0609`.