CODEWITHSUNDEEP
c++g++
prosseek
prosseek

Reputation: 190809

"primary-expression before '.' token error" in g++

I have this C++ code to generate "primary-expression before '.' token' error with g++ compiler. It compiles OK with cl (MSVC) compiler.

template<typename T>
class A : public std::auto_ptr<T>
{
    typedef std::auto_ptr<T> Super;
public:
    A() : Super() { }
    A(T* t) : Super(t) { }
    A(AP<T>& o) : Super(o) { }
    operator bool() { return !!Super.get(); } <--- error!
};

What's wrong with this code?

Upvotes: 3

Views: 299

Answers (1)

James McNellis
James McNellis

Reputation: 355069

Super is a type. If you want to call the base class function, you can do so via this:

this->get();

Note that this-> is only required here because get() is a member function of a dependent base class; that is, a base class that is dependent upon the template parameter T. For more information, consult the Parashift C++ FAQ article, "Why am I getting errors when my template-derived-class uses a member it inherits from its template-base-class?"

Upvotes: 8

Related Questions