Rule Definition
For a function to be picked as an override of a function in a base class, both functions must match exactly - same name, same parameters and same const/volatile qualification. If the functions only differ by the qualification, they will be seen as totally non correlated functions, and the base function will not be considered as overridden. C++11: If you use the 'override' keyword, you will not risk a function in a derived class not matching the version in the base class.

Remediation
If the base class function must be overridden, then respect all its properties in the derived class. Otherwise, use a name that is different for the function of the derived class.

Violation Code Sample

class A
{
public:
    virtual ~A();
    virtual void f() const;
};

class B : public A
{
public:
    virtual void f(); // Violation
};