More flexible refcount to account for owned back-references. * libinterp/octave-value/ov-classdef.h (cdef_object_rep::static_count, cdef_object_rep::destroy): New virtual methods. (cdef_object_rep::refcount): Use octave_idx_type as counter type. (cdef_object_rep::release): New method. (cdef_object::~cdef_object, cdef_object::cdef_object (cdef_object)): Use it. (cdef_class::cdef_class_rep::member_count): New member. (cdef_class::cdef_class_rep::cdef_class_rep ()): Initialize it. (cdef_class::cdef_class_rep::static_count, cdef_class::cdef_class_rep::destroy): New methods. (cdef_package::cdef_package_rep::member_count): New member. (cdef_package::cdef_package_rep::cdef_package_rep ()): Initialize it. (cdef_package::cdef_package_rep::static_count, cdef_package::cdef_package_rep::destroy): New methods. * libinterp/octave-value/ov-classdef.cc (octave_classdef_proxy::~octave_classdef_proxy): Remove owned cdef_class from all_classes. (cdef_class::cdef_class_rep::cdef_class_rep (std::list<cdef_class>)): Initialize member_count. (cdef_class::cdef_class_rep::install_method, cdef_class::cdef_class_rep::install_property): Increment member_count. (cdef_package::cdef_package_rep::install_class, cdef_package::cdef_package_rep::install_package): Likewise.

#include "mex.h"

void
mexFunction (int nlhs, mxArray* plhs[], int nrhs, 
             const mxArray* prhs[])
{
  char *str;

  mexPrintf ("Hello, World!\n");

  mexPrintf ("I have %d inputs and %d outputs\n", nrhs,
             nlhs);

  if (nrhs < 1 || ! mxIsString (prhs[0])) 
    mexErrMsgTxt ("function name expected");

  str = mxArrayToString (prhs[0]);

  mexPrintf ("I'm going to call the function %s\n", str);

  mexCallMATLAB (nlhs, plhs, nrhs-1, prhs+1, str);

  mxFree (str);
}