ACADr2015 _tcsncpy problem ?

[XXL1966]

hi,

'im having trouble with this code

this code reads dongle information

        retcode = SDX_Read(handle, 2, buffer);
        if (retcode < 0)
        {
            ads_printf(_T("Error READING dongle: %08x\n"), retcode);
            acedRetNil();
        }
        for(int i = 0; i < 512; i++)
        {
            block2[i] = (TCHAR) buffer[i];
        }
        block2[8]=_T('\0');

        TCHAR Dd[2];
        TCHAR Dm[2];
        TCHAR Dj[2];
        _tcsncpy(Dj,block2+0,2);
    //    Dj[2]=_T('\0');
        _tcsncpy(Dm,block2+3,2);
    //    Dm[2]=_T('\0');
        _tcsncpy(Dd,block2+6,2);
    //    Dd[2]=_T('\0');

acad 2015 crashed on the commented lines, works fine in any other acads

block2 contains "12.07.20" a date which is correct.

what am i'm missing or doing wrong ?

ty !

[owenwengerd]

The commented lines are each writing past the end of a 2-element array, a classical buffer overrun error.