6.33.2 ARM Type Attributes

On those ARM targets that support dllimport (such as Symbian OS), you can use the notshared attribute to indicate that the virtual table and other similar data for a class should not be exported from a DLL. For example:

class __declspec(notshared) C {
public:
  __declspec(dllimport) C();
  virtual void f();
}
__declspec(dllexport)
C::C() {}

In this code, C::C is exported from the current DLL, but the virtual table for C is not exported. (You can use __attribute__ instead of __declspec if you prefer, but most Symbian OS code uses __declspec.)