rem: char buffer[BUFSIZE]; size_t bytes_to_read = BUFSIZE;
add: char buffer[BUFSIZ]; size_t bytes_to_read = BUFSIZ;
context: head_bytes (const char *filename, int fd, uintmax_t bytes_to_write){  char buffer[BUFSIZE];  size_t bytes_to_read = BUFSIZE;  /* Need BINARY I/O for the byte counts to be accurate.  */  SET_BINARY2 (fd, fileno (stdout));  while (bytes_to_write)    {      size_t bytes_read;      if (bytes_to_write < bytes_to_read)	bytes_to_read = bytes_to_write;      bytes_read = safe_read (fd, buffer, bytes_to_read);      if (bytes_read == SAFE_READ_ERROR)	{	  error (0, errno, "%s", filename);	  return 1;	}      if (bytes_read == 0)	break;      if (fwrite (buffer, 1, bytes_read, stdout) == 0)	error (EXIT_FAILURE, errno, _("write error"));      bytes_to_write -= bytes_read;    }  return 0;}