Protected member inheritence in templated classes

[ramunasg]

Hello,

g++ refuses to compile the following code, by saying that "pt" is not
in the scope of "Second" class (when I add scope by changing "pt = 0"
to "First<T>::pt = 0" g++ comples clenely), but VC++ 8 compiles without
problems. So my questions is what is the syntax (and semantics) for
accessing protected members in templeted classes?

template <class T>
class First {
protected:
T *pt;
};

template <class T>
class Second public First<T> {
public:
Antras() { pt = 0; }
};
Thanks in advance :)

[Markus Moll]

Hi

ra******@gmail.com wrote:

g++ refuses to compile the following code, by saying that "pt" is not
in the scope of "Second" class (when I add scope by changing "pt = 0"
to "First<T>::pt = 0" g++ comples clenely), but VC++ 8 compiles without
problems. So my questions is what is the syntax (and semantics) for
accessing protected members in templeted classes?
It has nothing to do with protected members, but with dependent names, and
you can write "this->pt" as well as "First<T>::pt" to access the pt member
of the baseclass.
template <class T>
class First {
protected:
T *pt;
};

template <class T>
class Second public First<T> { ^
This produces another error here. :-)
public:
Antras() { pt = 0; }
};

Google for "two-phase name lookup"

Markus