Why I hate c

[Alan Anderson]

void User_Autonomous_Code(void)
{
  while (autonomous_mode)   /* DO NOT CHANGE! */
  {
    if (statusflag.NEW_SPI_DATA)      /* 26.2ms loop area */
    {
        Getdata(&rxdata);   /* DO NOT DELETE, or you will be stuck here forever! */
        /* Add your own autonomous code here. */
        // [state machine implementation]
        Putdata(&txdata);   /* DO NOT DELETE, or you will get no PWM outputs! */
    }
    Process_Data_From_Local_IO; 
  }
}

It took me four hours last night to figure out why Process_Data_From_Local_IO never gets called.