src/test/ui/extern/extern-main-fn.stderr

   1 error[E0580]: main function has wrong type
   2   --> $DIR/extern-main-fn.rs:1:1
   3    |
   4 LL | extern fn main() {}
   5    | ^^^^^^^^^^^^^^^^ expected "Rust" fn, found "C" fn
   6    |
   7    = note: expected fn pointer `fn()`
   8               found fn pointer `extern "C" fn()`
   9
  10 error: aborting due to previous error
  11
  12 For more information about this error, try `rustc --explain E0580`.