""Gary Chang[MSFT]"" <v-garych@online.microsoft.com> wrote in message
news:9hL9cNAwFHA.3020@TK2MSFTNGXA01.phx.gbl...
> Hi Jonathan,
>
>>...
>>The error generated is "error C2247: 'A' not accessible because 'B' uses
>>'private' to inherit from 'A'".
>>
>>As far as I can see there is nothing wrong with the above construction. Is
>>this a compiler error?
>
> I think the VS2005 C++ compiler's behavior is correct, according to the
> C++
> standard, anything placed within a private section of the base class is
> only available to the class itself, and not to any of the derived classes,
> also if the base class is privately inherited, then the base class could
> be
> only accessible to the class itself(in your case: B), and could not be
> accessible to its derived class(in your case: C).
>
> I am afraid the VS2003 C++ compiler doesn't comply to the C++ language
> standard strictly in this point.
>
>
> Thanks for your understanding!
>
> Best regards,
>
> Gary Chang
> Microsoft Community Support
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>...
>The error generated is "error C2247: 'A' not accessible because 'B' uses
>'private' to inherit from 'A'".
>
>As far as I can see there is nothing wrong with the above construction. Is
>this a compiler error?

>The error is coming from a function in a derived class havingr
>a paramete that is the type of a private base class. Surely the
>C++ standard doesn't say you can't pass instances of private
>base classes to functions in derived classes?

""Gary Chang[MSFT]"" <v-garych@online.microsoft.com> wrote in message
news:lVg1vyKwFHA.768@TK2MSFTNGXA01.phx.gbl...
> Hi Jonathan,
>
> I have also consulted this issue with our VC product team members, they
> confirmed this is not a problem, that's the way C++ works. The compiler
> finds the base class A first, and that's its(C's) view of A.
>
> Another more standard convention in this scenario is as following, without
> the redeclaration:
>
> void Func(::A& a);
>
>
> Hope this helps!
>
> Best regards,
>
> Gary Chang
> Microsoft Community Support
> --------------------
> Get Secure! ¡§C www.microsoft.com/security
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>
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>

>I assume the fact that it compiled in VC++ 6.0 was a mistake then?