warn_hidevirtual

Controls the recognition of a non-virtual member function that hides a virtual function in a superclass.

Syntax

#pragma warn_hidevirtual on | off | reset

Remarks

If you enable this pragma, the compiler issues a warning message if you declare a non-virtual member function that hides a virtual function in a superclass. One function hides another if it has the same name but a different argument type. Hidden Virtual Functions shows an example.

Listing 1. Hidden Virtual Functions

class A {
  public:
    virtual void f(int);
    virtual void g(int);
};

class B: public A {
  public:
    void f(char);        // WARNING: Hides A::f(int)
    virtual void g(int); // OK: Overrides A::g(int)
};

The ISO/IEC 14882:2003 C++ Standard does not require this pragma.

Note: A warning message normally indicates that the pragma name is not recognized, but an error indicates either a syntax problem or that the pragma is not valid in the given context.

This pragma corresponds to the Hidden Virtual Functions setting in the CodeWarrior IDE's Properties > C/C++ Build > Settings > Tool Settings > PowerPC Compiler > Warniings C/C++ Language settings panel.