BUG in emccanon.cc

/*! \function WAIT    program execution and interpreting is stopped until the input selected by     index changed to the needed state (specified by wait_type).    Return value: either wait_type if timeout didn't occur, or -1 otherwise. */ int WAIT(int index, /* index of the motion exported input */          int input_type, /*DIGITAL_INPUT or ANALOG_INPUT */      int wait_type,  /* 0 - immediate, 1 - rise, 2 - fall, 3 - be high, 4 - be low */      double timeout) /* time to wait [in seconds], if the input didn't change the value -1 is returned */ {   if (input_type == DIGITAL_INPUT) {     if ((index < 0) || (index >= EMCMOT_MAX_DIO))     return -1;   } else if (input_type == ANALOG_INPUT) {     if ((index < 0) || (index >= EMCMOT_MAX_AIO))     return -1;   }  EMC_AUX_INPUT_WAIT wait_msg;    flush_segments();    wait_msg.index = index;  wait_msg.input_type = input_type;  wait_msg.wait_type = wait_type;  wait_msg.timeout = timeout;    interp_list.append(wait_msg);  return 0; }