1.0.2 c++ inheritence pb

[Thomas Kunert]

Neal Becker wrote:
> 
> Here is a simple example that I think shows a problem with egcs-1.0.2
> c++ inheritence.
> 
> As shown it will not compile.  o.Compute() does not resolve to the
> D::Compute(Complex* zin, Complex& zout).  Why not?
> 
> Here is what you get if you don't remove the comments:
> 
> Bug.cc: In function `int main()':
> Bug.cc:32: no matching function for call to `O::Compute (complex<double>[8], complex<double> &)'
> Bug.cc:16: candidates are: O::Compute(complex<double> *, double &, double &)
> 
> If you remove the comments, placing the identical declaration of
> Compute (Complex* zin, Complex& zout) in class O, now it compiles.
> 
> ----------------------------
> #include <Complex.h>
> 
> class D {
> public:
> virtual void Compute (Complex* zin, double& Iout, double& Qout);
> 
>   void Compute (Complex* zin, Complex& zout) {
>     double Iout, Qout;
>     Compute (zin, Iout, Qout);
>     zout = Complex (Iout, Qout);
>   }
> };
> 
> class O : public D {
> public:
>   virtual void Compute (Complex* zin, double& Iout, double& Qout);
> //   void Compute (Complex* zin, Complex& zout) {
> //     double Iout, Qout;
> //     Compute (zin, Iout, Qout);
> //     zout = Complex (Iout, Qout);
> //   }
> };
> 
> main () {
>   O o;
> 
>   Complex DemodOut;
>   const int SPS = 8;
>   Complex RcvIn[SPS];
>   o.Compute (RcvIn, DemodOut);
> }
> ---------------------
Hi Neal,

redeclaration fo 'Compute' in O doesn't overload but hides _all_
occurences of Compute in D. The Compiler is right.
You need to write 

	o.D::Compute (RcvIn, DemodOut);

Thomas Kunert