Re: do_attr in SQLConnect.c is broken on some myodbc versions (data loss bug)

On 31/07/13 03:05, Andy Lutomirski wrote:
> do_attr in SQLConnect.c does this:
>
>      if ( value_set )
>      {
>          if (CHECK_SQLSETCONNECTATTR( connection ))
>          {
>              SQLSETCONNECTATTR(connection,
>                          connection -> driver_dbc,
>                          attr3,
>                          value,
>                          sizeof( value ));
>
> That checks for function[61]->func.
>
> My copy of libmyodbc5.so provides SQLSetConnectAttrW and
> MySQLSetConnectAttr.  This means that ->funcW and ->funcA get set, but
> ->func does not (I haven't tried to follow all the machinations
> involved in this).
>
> The upshot is that CHECK_SQLSETCONNECTATTR is false.  This causes
> SQL_ATTR_AUTOCOMMIT to have no effect if set to false before
> SQLDriverConnect gets called.  This is a data loss bug.
I have checked in what should be a fix for this and its in the 2.3.2pre 
tarball.

-- 
Nick
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