MISRA.VIRTUAL.NOVIRTUAL

Overriding virtual function declared with no 'virtual' keyword.

MISRA-C++ Rule 10—3—2 (required): Each overriding virtual function shall be declared with the virtual keyword

Rationale

Declaring overriding virtual functions with the virtual keyword removes the need to check the base class to determine whether a function is virtual.

Example

class A
{
public:
   virtual void g();
   virtual void b();
};
class B1 : public A
{
public:
   virtual void g(); // Compliant - explicitly declared "virtual"
   void b();         // Non-compliant - implicitly virtual
};