Bug: Failure to compile legal code (gcc-2.95.2)
Loren James Rittle
rittle@latour.rsch.comm.mot.com
Wed Jan 17 07:00:00 GMT 2001
Hi Mike,
Alexandre Oliva gave you the right answer. In your example, the
declaration of B::operator<<(int) does indeed hide A::operator<<(const
char*). The fact that it is a virtual method means nothing.
In ISO C++, you are suppose to be able to do this:
[...]
class B : public A
{
public:
using A::operator<<;
virtual A& operator<<(int);
};
[...]
to ensure that overloading works as you had expected. However, 2.95.2
doesn't implement that form of using. g++ 3.0 gets this right.
If you really want to understand why this works this way, see _The
Design and Evolution of C++_. pg 76. I'm sure that other great tomes
from Stroustrup reveal this information as well.
Regards,
Loren
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