🚀 go-pugleaf

boukanov@sentef1.fi.uib.no (Igor Boukanov) writes:

>Here the lines from September DWP, 5.2.6.9:
>
>class D : public virtual A, private B {};
>void g()
>{
>    D   d;
>    B*  bp = (B*)&d;  // cast needed to break protection
>...
>
>Does "cast needed to break protection" mean that in this case it is possible 
>to get access to the private base class by simple cast expression? 

Yes.

From Stroustrup's book Design and Evolution of C++, page 328:
"The fact that an old-stype cast can be used to gain access to the part of a
representation that is a private base is an unfortunate historical accident."

--
Fergus Henderson             	WWW: http://www.cs.mu.oz.au/~fjh
fjh@cs.mu.oz.au              	PGP: finger fjh@128.250.37.3
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