From help-request at octave dot org Sun Apr 16 10:52:52 2006
Subject: Re: Mkoctfile cygwin
From: "Keith Goodman" <kwgoodman at gmail dot com>
To: "Keshab Man Shrestha (Dr)" <AKeshab at ntu dot edu dot sg>
Cc: help at octave dot org
Date: Sun, 16 Apr 2006 08:51:10 -0700

On 4/16/06, Keith Goodman <kwgoodman at gmail dot com> wrote:
> On 4/16/06, Keith Goodman <kwgoodman at gmail dot com> wrote:
> > On 4/16/06, Keshab Man Shrestha (Dr) <AKeshab at ntu dot edu dot sg> wrote:
> > >
> > >
> > > I installed windows version of octave 2.1.73 (by downloading
> > > octve-2-1.73-inst.exe). I could create the oregonator.oct file by issuing
> > > the following commant inside octave
> > >
> > > >> system("mkoctfile oregonator.cc")
> > >
> > > I get
> > >
> > >         ans = 0
> > > return. However, when I type "oregonator ([1,2,3],0)" inside octave. It
> > > closes the octave window.
> > >
> > > Any help is highly appreciated.
> > >
> > >
> > > Keshab
> >
> > Looking at the code for oregonator.cc, I see that it takes only one
> > input argument. And since it is a simple example it does not check if
> > you supplied the right number of input arguments. If you supply the
> > wrong number you will get a segmentation fault.
> >
> > So try "oregonator ([1,2,3])".
> >
> > (Why does oregonator.m take two input arguments? Only the first on is used.)
> >
>
> Why didn't I test that before answering? Forget what I said.
>
> >> which oregonator
> oregonator is the dynamically-linked function from the file
> /home/me/oregonator.oct
> >> oregonator([1,2,3])
> ans =
>
>    77.269353
>    -0.012942
>    -0.322000
>
> >> oregonator([1,2,3],0)
> ans =
>
>    77.269353
>    -0.012942
>    -0.322000
>
> >> oregonator()
> error: octave_base_value::matrix_value(): wrong type argument
> `dynamically-linked function'
> >> version
> ans = 2.9.4
>

OK. I found it:

>> oregonator
panic: Segmentation fault -- stopping myself...
Segmentation fault

Calling it without even () does cause a segmentation fault.



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