Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Compiler Warning C4484
Collapse the table of content
Expand the table of content

Compiler Warning C4484

Error Message

'override_function' : matches base ref class method 'base_class_function', but is not marked 'virtual', 'new' or 'override'; 'new' (and not 'virtual') is assumed

When compiling with /clr, the compiler will not implicitly override a base class function, which means the function will get a new slot in the vtable. To resolve, explicitly specify whether a function is an override.

For more information, see:

C4484 is always issued as an error. Use the warning pragma to suppress C4484.

Example

The following sample generates C4484.

// C4484.cpp
// compile with: /clr
ref struct A {
   virtual void Test() {}
};

ref struct B : A {
   void Test() {}   // C4484
};

// OK
ref struct C {
   virtual void Test() {}
   virtual void Test2() {}
};

ref struct D : C {
   virtual void Test() new {}
   virtual void Test2() override {}
};

Community Additions

ADD
Show:
© 2015 Microsoft