message: WIP: fflush all files when null is passed
diff: @@ -251,8 +251,24 @@ pub unsafe extern "C" fn ferror(stream: *mut FILE) -> c_int {
  /// itself.
  #[no_mangle]
  pub unsafe extern "C" fn fflush(stream: *mut FILE) -> c_int {
  + if stream.is_null() {
  + //TODO: flush all files!
  +
  + if fflush(stdout) != 0 {
  + return EOF;
  + }
  +
  + if fflush(stderr) != 0 {
  + return EOF;
  + }
  + } else {
  let mut stream = (*stream).lock();
  - stream.flush().is_err() as c_int
  + if stream.flush().is_err() {
  + return EOF;
  + }
  + }
  +
  + 0
  }
  /// Get a single char from a stream
  