error[E0060]: this function takes at least 1 argument but 0 arguments were supplied
  --> $DIR/E0060.rs:6:14
   |
LL |     unsafe { printf(); }
   |              ^^^^^^-- an argument of type `*const u8` is missing
   |
note: function defined here
  --> $DIR/E0060.rs:2:8
   |
LL |     fn printf(_: *const u8, ...) -> u32;
   |        ^^^^^^
help: provide the argument
   |
LL |     unsafe { printf(/* *const u8 */); }
   |                    ~~~~~~~~~~~~~~~~~

error: aborting due to previous error

For more information about this error, try `rustc --explain E0060`.