(From C. Green, CDF, FNAL)

Hi,

In addition to those changes detailed in problem report #104, it is necessary in
G4Polycone.hh to forward-declare the private nested class G4PolyconeHistorical
and declare it a friend before the class definition. If this is not done, then
under the strict interpretation of the name/scope injection rules adhered to by
KCC3.4 and later G4PolyconeHistorical will be unable to see itself. Simply
insert the lines:

class G4PolyconeHistorical;
friend class G4PolyconeHistorical;

before

struct G4PolyconeHistorical {
...
};

in the private section of the definition of G4Polycone.

Thanks,
Chris.