I am trying to compare the imports which each dll (one which works, like ib_udf and one which does not - like mine) uses. There is nothing suspicious - I guess - use of fbclient is allowed.

Besides - I am linking my dll with the ib_util.lib from the old Interbase 6.0 installation and not the ib_util_ms.lib wich comes with Firebird 1.5.x, maybe this is cause of my problems.

I can run drwatson - but I am not sure - what I need to look for. I guess - I should chancge only my linking part, the code is correct.

--- In firebird-support@yahoogroups.com, "vincent_kwinsey" <vincent_kwinsey@...> wrote:
>
> There is little to show - e.g. function that returns aboslute value:
>
> double FAR PASCAL fun_abs(double* x)
>
> {
> return (*x < 0.0) ? -*x : *x;
> }
>
> There is not even the memory allocation.
>
> --- In firebird-support@yahoogroups.com, "Ivan Prenosil" <Ivan.Prenosil@> wrote:
> >
> > > I have my proprietary udf library and it is working with FB 1.5.x superserver but is not working with classic server. Any select
> > > which uses some function from my library results in:
> > >
> > > *** IBPP::SQLException ***
> > > Context: Database::Statistics
> > > Message: isc_database_info failed
> > >
> > > SQL Message : -902
> > > Unsuccessful execution caused by a system error that precludes
> > > successful execution of subsequent statements
> > >
> > > Engine Code : 335544721
> > > Engine Message :
> > > Unable to complete network request to host "localhost".
> > > Error writing data to the connection.
> > > An existing connection was forcibly closed by the remote host.
> > >
> > > And the firebird.log contains:
> > > MYNAME (Client) Mon Mar 22 08:49:49 2010
> > > INET/inet_error: send errno = 10054
> > >
> > > Nothing like this happens (even on classic server) when I am issuing select that uses function from library supplied with Firebird
> > > installation like ib_udf.dll.
> >
> > Because ib_udf does not cause problems, it is obvious that problem is in your library.
> > But it is impossible to tell what is wrong if you do not show us the code.
> >
>