Internal compiler error 40: pointer to member function syntax

[Phil Austin <phil at geog dot ubc dot ca>]

While trying to figure out how to call a pointer to member function 
in egcs 1.0 I got the following message:

g++ -g -c test.C
test.C: In method `void ODEsolver::init()':
test.C:41: warning: assuming & on `(*this) .* ODEsolver::midpointODE(vector<double,__default_alloc_template<false,0> > &, double &, double &)'
test.C: In method `void ODEsolver::timeloop(class vector<double,__default_alloc_template<false,0> > &, double, double, double)':
test.C:46: Internal compiler error 40.
test.C:46: Please submit a full bug report to `egcs-bugs@cygnus.com'.

<phil@peacock: test.dir/ODEsolver> g++ -v
Reading specs from /usr/local/lib/gcc-lib/sparc-sun-solaris2.6/egcs-2.90.21/specs
gcc version egcs-2.90.21 971202 (egcs-1.00 release)

<phil@peacock: test.dir/ODEsolver> uname -a
SunOS peacock 5.6 Generic sun4u sparc SUNW,Ultra-2

test.C is appended below.  I would also be grateful if someone could
tip me to the correct syntax to invoke a member function via a pointer
to member function.  A bare:

useMethod(y,ts,dt);

works in g++ 2.7.2.2 but not with egcs.

Thanks, Phil Austin


-------test.C-------

#include <vector>
#include<string>

using namespace std;

class ODEsolver
{
    private:
	void eulerODE(vector<double>& y, double& t, double& dt);
	void midpointODE(vector<double>& y, double& t, double& dt);

    protected:
        void (ODEsolver::*useMethod)(vector<double>&, double&, double&);
       	void init();

    public:
	ODEsolver();
	void timeloop(vector<double>& y, double ts, double te, double dt);
};


ODEsolver::ODEsolver()
{
  init();
}


void ODEsolver::eulerODE(vector<double>& y, double& t, double& dt)
{
  y[0] = dt * 2.;
}

void ODEsolver::midpointODE(vector<double>& y, double& t, double& dt)
{
  y[0] = dt * 3.;
}


void ODEsolver::init()
{
  ODEsolver::useMethod = ODEsolver::midpointODE;
}

void ODEsolver::timeloop(vector<double>& y, double ts, double te, double dt)
{
  (ODEsolver::useMethod)(y,ts,dt);
}

int main (int nargs, char** args)
{
  ODEsolver solver;
  vector<double> y(2);  double t_start=5.;  double t_end=7.;  double dt=2.;
  solver.timeloop(y,t_start,t_end,dt);
  cout << y[0] << endl;
  return(0);
}