Re: reference to pointer used in ctor - using 'this' in ctor (repost - corrected sample code)

From:
"Victor Bazarov" <v.Abazarov@comAcast.net>
Newsgroups:
comp.lang.c++
Date:
Tue, 28 Aug 2007 09:18:10 -0400
Message-ID:
<fb17ak$gfo$1@news.datemas.de>
Anonymous wrote:

[..]


The code still doesn't compile because of numerous errors (like 'm_obj'
and 'm_objs', declarations of friends that are templates, etc. Read
the FAQ 5.8 please.

class C
{
public:
   friend class A;
   ~C(){};

private:
   C(A<C>*& parent):m_parent(parent){}


The advice is still the same:

    C(A<C>* const& parent)...

A<C>* m_parent ;
};

int main( int argc, char* argv[])
{
    A<B> ab ; // Ok
    A<C> ac ; // Croaks here ...
};

Class A instantiated with B compiles ok, but when instantiated with
class C (that accepts a *&), I get the error message - cannot convert
parameter 1 from A const* to A* - why is that ?

Why is a reference to a ptr being passed as a const ptr ?

If 'this' is a const ptr during construction (I doubt this assertion
very much), then why is it ok to use as a non-const pointer in class
B?


V
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