const gsl_multifit_fsolver_type T_ ; gsl_multifit_fsolver *s_ = gsl_multifit_fsolver_alloc (&T_, 10, 5); Gives the same Segmentation fault (core dumped) =========================================================================== Patrick DUPRÉ | | email: pdupre@xxxxxxx Laboratoire de Physico-Chimie de l'Atmosphère | | Université du Littoral-Côte d'Opale | | Tel. (33)-(0)3 28 23 76 12 | | Fax: 03 28 65 82 44 189A, avenue Maurice Schumann | | 59140 Dunkerque, France =========================================================================== > Sent: Thursday, June 04, 2015 at 3:15 PM > From: "Fred Smith" <fredex@xxxxxxxxxxxxxxxxxxxxxx> > To: users@xxxxxxxxxxxxxxxxxxxxxxx > Subject: Re: gsl > > On Thu, Jun 04, 2015 at 02:01:41PM +0100, Jonathan Underwood wrote: > > On 3 June 2015 at 22:23, Patrick Dupre <pdupre@xxxxxxx> wrote: > > > Hello, > > > > > > Can somebody help me? > > > > > > This short piece of code fails. > > > It seems to be due to the gsl library! > > > > > > Thank for your help. > > > > > > #include <gsl/gsl_multifit_nlin.h> > > > > > > int main () { > > > const gsl_multifit_fsolver_type *T_ ; > > > gsl_multifit_fsolver *s_ = gsl_multifit_fsolver_alloc (T_, 10, 1); > > > } > > > > > > > > > You haven't initialized T_, so when you call > > gsl_multifit_fsolver_alloc, it fails because it doesn't know what > > solver type to allocate for. > > > > So, try initializing it, eg. > > > > const gsl_multifit_fsolver_type *T_ = gsl_multifit_fdfsolver_lmsder; > > the other thought I had is that you may need to pass the address of > T_ so the function knows where your local gsl_multifit_fsolver_type > is, so it can store data there. Try passing "&T_" instead. In this case > you wouldn't need to initialize it because the routine will use > the address of your local variable. > > > -- > ---- Fred Smith -- fredex@xxxxxxxxxxxxxxxxxxxxxx ----------------------------- > "For the word of God is living and active. Sharper than any double-edged > sword, it penetrates even to dividing soul and spirit, joints and marrow; > it judges the thoughts and attitudes of the heart." > ---------------------------- Hebrews 4:12 (niv) ------------------------------ > -- > users mailing list > users@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe or change subscription options: > https://admin.fedoraproject.org/mailman/listinfo/users > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines > Have a question? Ask away: http://ask.fedoraproject.org > -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org