C++ code calling octave and the FAQ

[Worik]

I was hoping that I could get some help with this, so I am asking again.

FAQ says...

#include <octave/oct.h>
  ...
  ColumnVector NumRands(2);
  NumRands(0) = 9000;
  NumRands(1) = 1;
  octave_value_list f_arg, f_ret;
  f_arg(0) = octave_value(NumRands);
  f_ret = feval("rand",f_arg,1);
  Matrix unis(f_ret(0).matrix_value());

I competed this snippet into a programme thusly...

#include <octave/oct.h>
#include <octave/parse.h>
#include <iostream>
int main(){
  ColumnVector NumRands(2);
  NumRands(0) = 9000;
  NumRands(1) = 1;
  octave_value_list f_arg, f_ret;
  f_arg(0) = octave_value(NumRands);
  f_ret = feval("rand",f_arg,1);
  Matrix unis(f_ret(0).matrix_value());
  std::cout<<__FILE__<<":"<<__LINE__<<":"<<unis;
  return 0;
}

Compiled it on my ubuntu box thus:
g++ -g3 -o test -O0 test.cc -L /usr/lib/octave-2.9.12 -loctave
-loctinterp 

The call to feval segfaulted.

I am sure that this is very easy to solve.  Is someone out there using
feval able to help me out with this?

Then we could update the FAQ.

cheers
Worik
-- 
They laughed at Einstein. They laughed at the Wright Brothers. They
laughed at Bozo the Clown.