error[E0423]: expected function, tuple struct or tuple variant, found struct `S`
  --> $DIR/legacy-ctor-visibility.rs:9:13
   |
LL | /         fn f() {
LL | |             S(10);
   | |             ^ help: a function with a similar name exists: `f`
LL | |
LL | |         }
   | |_________- similarly named function `f` defined here

error: aborting due to previous error

For more information about this error, try `rustc --explain E0423`.