[CLN-list] internal error has been reached

[Michael Miller]

FYI - when I run the code

====================
#include <cln/cln.h>
using namespace std;
using namespace cln;
const cl_univpoly_complex_ring CZ = find_univpoly_ring(cl_C_ring);
struct parameter { cl_UP_N& p; };

parameter InitializeParameter(int n) {
    const cl_UP_N Z1 = CZ->monomial(1, 1);
    const cl_UP_N Z0 = CZ->monomial(1, 0);
    cl_R beta=random_F(cl_float(2));
    cl_UP_N p=Z1-beta*Z0;
    parameter param={p};
    return param;
}

int main(void) {
    default_float_format=float_format(200);
    parameter initparam=InitializeParameter(3);
    cout << initparam.p << "\n";
}
===================

I get the error message and output

-------------------
terminate called after throwing an instance of 'cln::notreached_exception'
   what():  Internal error: statement in file 
float/output/cl_F_dprint.cc, line 464 has been reached!!
Please send the authors of the program a description how you produced 
this error!
1*x + 
-1.36062836991623237822723027868985516363623132879821473160126387357647155893917339260414115079493220011187343026833144928737100377766266870510325749056188223177423109599205862683403974607609610401462854382538584223Aborted
---------------------

I haven't been able to reduce the code any further and still get the 
error - sorry!

Michael