Strange behavior with templates and G++

[Pascal Francq]

Hi,
While compiling the following code, I got an error :


template<class C> class Super
{
public:
        Super(void) {}
        void Test(C*) {}
};

class A
{
public:
        A(void) {}
};

class A1 : public A
{
public:
        A1(void) : A() {}
};

class A2 : public A
{
public:
        A2(void) : A() {}
};

class Super2 : public Super<A1>, public Super<A2>
{
public:
        Super2(void) {}
};

void Test(void)
{
        Super2 T;
        A1* ptr;
        T.Test(ptr);
}


The compiler gives me the following error for the Test() function:
        error: request for member ‘Test’ is ambiguous
        error: candidates are:  void Super<C>::Test(C*) [with C = A2]
        error:                          void Super<C>::Test(C*) [with C = A1]
But here the call refers clearly to the second method. The error still appears 
if A1 and A2 do not inherit from a same root class. If I replace the code with 
an explicit call it works:
        T.Super<A1>::Test(ptr)
But this make the code less cleaner. 

Is this a problem related to a misunderstood concept from me, a wrong 
implementation or a technical problem of g++ ?

Thanks.
-- 

Dr. Ir. Pascal Francq
BELGIUM

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