[GiNaC-list] archive/unarchive on functions with a variable number of arguments

[Feng Feng]

Hi all,

I came across a problem about the archive and unarchive on functions with a variable number of arguments.
for example, the following c++ code produces the output: zeta(10,x) :> 1/93555*Pi^10.
it seems that the unarchive just return zeta(10).

Best regards!
Feng

//---

    symbol x("x");
    ex zx = zeta(10,x);
    
    archive ar_out;
    ar_out.archive_ex(zx, "zx");
    ofstream out("tmp.gar");
    out << ar_out;
    out.close();
    
    lst syms = {x};
    archive ar_in;
    ifstream in("tmp.gar");
    in >> ar_in;
    in.close();
    
    cout << zx << " :> " << ar_in.unarchive_ex(syms,"zx") << endl;

//---