Dear Sir or Madam,
I think I have found a bug in the PostgreSQL ODBC driver (of which I am using the latest version 10_03).
I am using SQLBindCol to bind a bookmark column of type SQL_C_VARBOOKMARK.
Everything works perfectly when I compile my application in 32 bit mode and use the 32 bit ODBC driver.
With the 64 bit driver I get an instant crash (memory exception).
With logging turned on, the last entry in the mylog is the following:
[SC_Create_bookmark]3133: entering type=-2 buflen=64 buf=000000000C6AF268
I can also attach a debugger and the crash happens at the following line:
memcpy(CALC_BOOKMARK_ADDR(bookmark, offset, bind_size, bind_row), &pg_bm, cvtlen);
At that time the value of the bookmark variable is: bookmark = 0x0000000000000001 {buflen=??? buffer=??? used=??? ...}, screenshot attached.
Although it received good values when the function was called (as seen in the log), the memory got corrupted in between and it is no longer a valid pointer.
I assume this is because something is writing a 64 bit value into a buffer which is only made for a 32 bit integer.
Can you please fix the crash in the next version of the ODBC driver?
Regards,
Christof PAAL
NATO Communications and Information Agency
Service Support and Business Applications | Senior System Manager
SHAPE, B-7010 Mons, Belgium
T: 254 9446
E: christof.paal@ncia.nato.int W: www.ncia.nato.int
