Newbie question - gcry_sexp_build Seg. Fault

[António Pinto]

I forgot to attache the debugger output:
-------
Program received signal SIGSEGV, Segmentation fault.
0x008743b2 in gcry_sexp_cadr() from /usr/lib/libgcrypt.s0.11
-------

I'm using Anjuta (don't if this is important).

thx

On Fri, 5 Nov 2004 11:59:14 +0000, António Pinto
<pinto.antonio at gmail.com> wrote:
> I've tried replacing the gcry_sexp_build with gcry_sexp_sscan, but I
> still get a seg. fault.
> The current code is:
> -------------------
> int buildSig(int msgid, int leaderid, char * sig) {
> gcry_sexp_t plain, sign;
> int len; char exp[1024];
> 
>         sprintf(exp,"(data (flags raw) (value %d))",msgid+leaderid);
> //      gcry_sexp_build (&plain, NULL, "(data (flags raw) (value %s))", val);
>         gcry_sexp_sscan(&plain,NULL,exp,strlen(exp));
>         gcry_pk_sign(&sign, plain, sKey);
>         len=gcry_sexp_sprint(sign, GCRYSEXP_FMT_ADVANCED, sig, sizeof(char)*1024);
> 
> return len;
> }
> -------------------
> 
> 
> On Thu, 4 Nov 2004 17:20:55 +0000, António Pinto
> 
> 
> <pinto.antonio at gmail.com> wrote:
> > That was one of the attempts I've made to resolve the seg. fault. The
> > actual code is the following:
> >
> >
> >
> > ------------------
> > int buildSig(int msgid, int leaderid, char * sig) {
> > gcry_sexp_t plain, sign;
> > int len,data;
> >
> >         data=msgid+leaderid;
> >         gcry_sexp_build (&plain, NULL, "(data (flags raw) (value %d))", data);
> >         gcry_pk_sign(&sign, plain, sKey);
> >         len=gcry_sexp_sprint(sign, GCRYSEXP_FMT_ADVANCED, sig, sizeof(char)*1024);
> >
> > return len;
> > }
> > --------------------
> >
> > And I keep getting de seg. fault.
> > One thing I've noticied is that the seg. fault only happens on the
> > first run (of the first forked process, in a multi process
> > enviroment).
> >
> > thx
> >
> > On Fri, 5 Nov 2004 01:17:43 +0000 (Local time zone must be set--see
> >
> >
> > zic manual page), t.fromm at dresearch.de <t.fromm at dresearch.de> wrote:
> > >
> > > On Thu, 4 Nov 2004, António Pinto wrote:
> > >
> > > > I'm getting a seg. fault while running the following code:
> > > >
> > > > ------------------------
> > > >       gcry_sexp_build (&plain, NULL, "(data (flags raw) (value %d))", &data); /* SEG FAULT */
> > >
> > > Typo here: you want to use tha value of (int) data, not the value at the
> > > address this (uninitialised) int points to. Try '...lue %d))", data);' .
> > >
> > > Regards,
> > > Thilo
> > >
> > > /* Dipl.-Ing. (FH) Thilo Fromm, MSc., Hardware & Software
> > >  * DResearch Digital Media Systems GmbH
> > >  * Otto-Schmirgal-Str. 3, 10319 Berlin, Germany
> > >  * Tel: +49 (30) 515932-228  mailto:t.fromm at dresearch.de
> > >  * Fax: +49 (30) 515932-299      http://www.dresearch.de */
> > >
> > >
> >
> >
> > --
> > António Pinto
> >
> 
> 
> --
> António Pinto
> 


-- 
António Pinto