FreeTDS Development Group

["Mark J. Lilback" <mark AT lilback.com>]

At 9:44 PM +0200 9/3/01, Harald Fernengel wrote:
> Hello,
>
> in my dblib apps I'm using the following call:
>
> dberrhandle( (EHANDLEFUNC)myErrHandler );
>
> myErrHandler is a "extern C" function which works fine using the Sybase / M$
> dblib. Unfortunately, this call fails using FreeTDS:
>
> cannot convert `int (*)(DBPROCESS*, int, int, int, char*, char*)' to
> `int(*)()' for argument `1' to `int (* dberrhandle(int (*)()))()'
>
> in FreeTDS's sybdb.h dberrhandle is defined as follows:
> extern  int (*dberrhandle( int (*handler)() )) ();
>
> in Sybase's Headers it is defined differently:
> EHANDLEFUNC CS_PUBLIC dberrhandle  PROTOTYPE((EHANDLEFUNC handler));

Change it in FreeTDS's sybdb.h to:

typedef int (*dberrhandle_func)(DBPROCESS *dbproc, int severity, int dberr,
        int oserr, char *dberrstr, char *oserrstr);
typedef int (*dbmsghandle_func)(DBPROCESS *dbproc, DBINT msgno, int 
msgstate, int severity,
        char *msgtext, char *srvname, char *procname, int line);
extern  dberrhandle_func        dberrhandler(dberrhandle_func handler);
extern  dbmsghandle_func        dbmsghandler(dbmsghandle_func handler);

It seems FreeTDS is generally compiled with non-strict compilers. To 
get it to work with Metrowerks CodeWarrior on Mac OS 9, I had to make 
a slew of changes like function prototypes, casts of unsigned chars 
to chars when strlen is called, etc.

--
__________________________________________________________________________
                                         "The best assumption to have
Mark J. Lilback                           is that any commonly held
<mark AT lilback.com>                        belief is wrong." -- Ken Olsen,
http://www.lilback.com/                   founder, Digital Equip. Corp.