Pass an int64 variable by reference from CVI to Teststand

Question

I tried searching for this problem but couldn’t find a solution. I run test scripts that call a function in C AA_Dat_Get_Statistic( Stats_Record *p_stats ). If I call this function, I sometimes get system level errors (-17001, -17002), TestStand will sometimes crash, and a load of other problems. These errors do not occur until steps after. If I take out this call, TestStand will not crash. There is an obvious problem with this function.
I wrote a program in C that calls this function. By bypassing TestStand, I avoid crashes too.
Stats_Records contains a few unsigned _int64 variables. The custom struct in TestStand uses another custom struct called Int64. Int64 contains two double variables, High and Low. In short, the variables being passed as a 64 integer are being stored in two 32 double.
Does anyone know if passing by reference an int64 will cause these memory crashes? Is this how I should handle this or is there a better way.
Thanks in advance. ⨪

Answer 1

Below is the structure and function:
typedef struct
    unsigned __int64 frame_count;
    double                                   BER;
  }   Stats_Record;
AA_Dat_Get_Statistics
                   (int p_card, int p_channel, Stats_Record *p_stats)
    typedef union
      { __int64  int64_BER;
        double   float64_BER;
      }  BER_Union;                  
   BER_Union  BER;
    memset (&aa_stats, 0, sizeof(aaSTATS_DATA64));
    aa_status = aa_datGet (aa_handle, aa_channel, AA_DATAID_STATISTICS64, &aa_d_ptr);
    p_stats->frame_count           = aa_stats.ullFrameCount;
   BER.int64_BER        = aa_stats.floatCumulativeBER;
    p_stats->BER         = BER.float64_BER;
    return (status);
 }⨪