CVI Error: Over Array Bounds

[hurst]

When the attached C-File is compiled and executed in Debug mode CVI fails with an Over Array Bounds error while dereferencing a valid char * pointer. The function 'LogEnetData ()' is passed a pointer to over a thousand bytes of valid data and yet CVI declares an error when the loop index is 2.  I believe that this violates standard C behaviour.

When I single-stepped through the code and monitored the value of pData after it had been incremented, I got the following results:

          i                              pData

-------------------           -----------------

          0                        0x0012FA6D                        This is OK

          1                       "Over Array Bounds" 

[jr_2005]

Towards the end of your file, you have the line:

    LogEnetData (fp, Message.MsgSize, (unsigned char *)&Message.CsciSource);

You should be using the .Data field of your structure, not the .CsciSource one. Like this:

    LogEnetData (fp, Message.MsgSize, Message.Data);

JR

[hurst]

I am using the CsciSource field because that's where the logging needs to start

Hurst C.