I'm sorry to keep pestering.. but if I omit the asterick, nothing
changes.. it still aborts.. What I did get to work, sorta, was to omit
the 'out'.. initially I got the error 'error: use of possibly unassigned
local variable `errbuf'' which I got around by declaring errbuf as
'string errbuf = ""'.. now, the buffer is filled, but with only 7
characters of the error:
ORA-121
which should be:
ORA-12154: TNS:could not resolve the connect identifier specified
Which I can get if I change the bufsiz arg from '(int)sizeof(string)' to
512.. but I then it's worse as I also get:
*** glibc detected *** ./x: free(): invalid next size (fast):
0x0000000000688510 ***
Which I presume is because I'm freeing more memory than the string
actually occupies? (I assume this is true, because if I change it to 16,
I get more of the message returned, without the error.. but I can't go
anywhere near the 66 chars needed.. not even 33)
The thing I don't understand is that the docs say if buffsiz isn't big
enough, OCIErrorGet will return null.. so, I'm lead to believe that
oracle is getting a big enough buffer, but somehow string is truncating
it? Should I not be using string?
On Wed, 2009-06-17 at 13:24 +0200, Jiří Zárevúcky wrote:
> You have problem with pointers, again. ;) Once you add "out", it's not
> a pointer anymore as far as Vala is concerned, so you have to omit the
> asterisk. You are essentially replacing it.
>
> 2009/6/17 Shawn Ferris <shawn.fer...@gmail.com>:
> > Ooops.. Resending, didn't realize this didn't go to the list.. my
> > apologies.
> >
> > On Tue, 2009-06-16 at 21:44 -0600, Shawn Ferris wrote:
> >> Man.. I'm so close I can smell it.. I actually have the bindings working
> >> to the point were I am fetching a value from a table. Unfortunately, the
> >> way it sits, I'm stuck with ints alone.. as soon as I try to return a
> >> string, the code aborts.. there's actually two cases where the results
> >> are the same and I'm assuming the fix for one will fix the other, so
> >> I'll ask for help on the easier one. In this case, it's the ErrorGet
> >> function defined as:
> >>
> >> sword OCIErrorGet ( void *hndlp,
> >> ub4 recordno,
> >> OraText *sqlstate,
> >> ub4 *errcodep,
> >> OraText *bufp,
> >> ub4 bufsiz,
> >> ub4 type );
> >>
> >> My vapi definition:
> >>
> >> [CCode (cname = "OCIErrorGet")]
> >> public int ErrorGet (
> >> Error* error,
> >> int record,
> >> out string* sqlstate,
> >> out int* errcode,
> >> out string* buffer,
> >> int buffersz,
> >> HType type
> >> );
> >>
> >> And a C example:
> >>
> >> text errbuf[512];
> >> OCIErrorGet ((dvoid *) errhp, (ub4) 1, (text *) NULL, &errcode,
> >> errbuf, (ub4) sizeof(errbuf), (ub4) OCI_HTYPE_ERROR);
> >>
> >> If I leave off errbuf (which should be the physical message string
> >> assoctiate to errcode) everything works fine. EG:
> >>
> >> int* errno;
> >> OCI.ErrorGet ( err, 1, null, out errno, null, 0, HType.ERROR);
> >> stdout.printf("Error - ORA-%5.5d (%s)\n", (int)errno, action);
> >>
> >> I absolutely get the right error code (i can force which error I gen)
> >> but as soon as I try to touch errbuf the program aborts.. I can not for
> >> the life of me find the correct way to do this. Can someone point me in
> >> the right direction? And then, I'll warn you that I'll have at least one
> >> more email.. but more critique and style.. I'm assuming I haven't
> >> followed the vala way, but I'm more interested in getting it to work and
> >> addressing style later.
> >>
> >> Thanks for the help!
> >> SMF
> >>
> >
> > _______________________________________________
> > Vala-list mailing list
> > Vala-list@gnome.org
> > http://mail.gnome.org/mailman/listinfo/vala-list
> >
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