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>:t = 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

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>:t = 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

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