FreeTDS Development Group

[John Kendall <john AT capps.com>]

I have MS SQL Server 2012 (named CASTOR) running on Windows Server 2012 R2.
I want to link some servers to it using the FreeTDS ODBC driver.
I've had success with 3 different licensed ($) ODBC drivers, so I know I'm 
doing the setup right.

The FreeTDS ODBC driver almost works.  Here's an example select on a linked 
DSN (named PRODFTDS) created using the FreeTDS ODBC driver:

 select * from PRODFTDS...Movetype 
 Msg 7399, Level 16, State 1
 Server 'CASTOR', Line 1
 The OLE DB provider "MSDASQL" for linked server "PRODFTDS" reported an 
error. The provider reported an unexpected catastrophic failure.
 Msg 7330, Level 16, State 2
 Server 'CASTOR', Line 1
 Cannot fetch a row from OLE DB provider "MSDASQL" for linked server 
"PRODFTDS".
  movetype move_desc            move_revenue
  -------- -------------------- ------------

The table Movetype has 3 columns and their names are correctly returned, but 
that's all that is returned.

I installed Win32OpenSSL 1.1.0h.  I've used various versions of the ODBC 
driver from the AppVeyor site, Ramiro's 0.95 branch, and one I compiled 
myself with mingw.  They all do the same thing.  

Can anyone verify that they have had success with the FreeTDS Win64 ODBC 
driver for a MSSQL Linked Server?  Did I miss an important step? inconv maybe?

The SQL Server logs show a stack dump that reports an access violation.  Some 
of it is shown below.  I can show more if it would be helpful.  I'm not sure 
how to do a TDSDUMP with ODBC on Windows...

Thanks,
John


  SqlDumpExceptionHandler: Process 64 generated fatal exception c0000005 
EXCEPTION_ACCESS_VIOLATION. SQL Server is terminating this process.
  * 
*******************************************************************************
  *
  * BEGIN STACK DUMP:
  *   05/08/18 20:15:26 spid 64
  *
  *
  *   Exception Address = 000000006F7840B5 Module(tdsodbc+00000000000040B5)
  *   Exception Code    = c0000005 EXCEPTION_ACCESS_VIOLATION
  *   Access Violation occurred writing address 0000000000000090
  * Input Buffer 70 bytes -
  *  select * from PRODFTDS...Movetype  
  *  
  * 
...