[Tinyos-help] generate segmentation error

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Hello!I'm doing test about Surge route. But, I did generate segmentation error.[StdControl.init() of MintRoute or Route]  
command result_t StdControl.init() {
    memset((void *)NeighborTbl,0,(sizeof(TableEntry) * ROUTE_TABLE_SIZE));    BaseStation.id = TOS_UART_ADDR;    BaseStation.parent = TOS_UART_ADDR;    BaseStation.flags = NBRFLAG_VALID;    BaseStation.hop = 0;    gpCurrentParent = NULL;    gbCurrentHopCount = ROUTE_INVALID;    gCurrentSeqNo = 0;    gwEstTicks = 0;    gUpdateInterval = DATA_TO_ROUTE_RATIO * DATA_FREQ;    gfSendRouteBusy = FALSE;    gSelfTimer = TRUE;    switch (TOS_LOCAL_ADDRESS) {        case 0: // Parent of mote 0 is the UARTid = TOS_UART_ADDR;                break;        case 1: // Parent of mote 1 is mote 0id = 0x0000;                break;        case 2: // Parent of mote 2 is mote 1id = 0x0001;                break;        case 3: // Parent of mote 3 is mote 2id = 0x0002;                break;        default :                break;    }    call ByteControl.init();
    return SUCCESS;  }id = xxx.However, when it is sended surge message, it generate segmetation fault.I want to know why it is doing like above.Help me, or give me some idea for fixing static routing.Thank you..
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