bug in oracle odbc? buffer overflow?

I do have a long text field which i need to get by multiple reads:

example:

char szTest[10];
memset (szTest,1,sizeof(szTest));
rc = ::SQLGetData(hStmt2, 1, nSQLType, szTest, 6, &cbData);

from my understanding, the buffer szTest should be used from byte 0 to 5 (length =&), but oracle writes an additional 0 to byte 6, what is an out of buffer write. i do not have this problem with mssql, here everything works fine (using 6 bytes, not 7).

any ideas?

-- 
Thorsten Engel

MATRIX-Computer