FreeTDS Development Group

["ZIGLIO, Frediano, VF-IT" <Frediano.Ziglio AT vodafone.com>]

> 
> The source for the connnect() function is as follows:
> 
> int DBConnection::connect()
> {
>     LOGINREC *login;
>     DBPROCESS *dbproc;
>     RETCODE rc;
>     
>     rc = dbinit();
>     if (rc == FAIL) {
>         fprintf(stderr, "%d: dbinit() failed\n", __LINE__);
>     }
> 
>     dbopen();
> 

??? well.. I mistake, dbinit, not dbopen here...

>     DBSETLUSER(login, USER); // segmentation fault occurs here

cause login is not initialized, DBSETLUSER should be called after a
dblogin.
If you use gcc -Wall can help

>     DBSETLPWD(login, PASSWORD); // also here, if previous 
> line is commented out
> 
>     login = dblogin();
>     
>     assert(login != NULL );
>     
>     dberrhandle(err_handler);
>     dbmsghandle(msg_handler);
>     
>     dbproc = dbopen(login, "MyServerDev");
>     assert(dbproc != NULL);
>     
>     dbuse(dbproc, "bioinformatics");
>     
> }

correct order should be

dbinit
dberrhandle+dbmsghandle
dblogin
DBSETLUSER+DBSETLPWD
dbopen
dbuse

freddy77

> 
> -----Original Message-----
> > I don't know what the "cstb" is in reference to, but I have 
> > found a simple example written in C that allows my program to 
> > change the username and password.  I had been reading many 
> > conflicting examples that included combinations of sybdb.h, 
> > tds.h, and dblib.h.  Using only sybdb made my code simpler 
> > and allowed the message handler to run.  Thank you for your help.
> > 
> 
> 0x63737462 is "cstb" (or "btsc" depending on byte order).
> It's quite strange that a pointer is composed only by lower case
> bytes... it seems a corruption or a wrong structure use. I 
> think source
> for DBConnection::connect would help.
> 
> Does a simple code like
> 
> dbopen
> dblogin
> DBSETLUSER
> 
> works??
> 
> freddy77
>