compiler-warning-level-1-c4489.md

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Learn more about: Compiler Warning (level 1) C4489	Compiler Warning (level 1) C4489	11/04/2016	C4489	C4489	43b51c8c-27b5-44c9-b974-fe4b48f4896f

Compiler Warning (level 1) C4489

'specifier' : not allowed on interface method 'method'; override specifiers are only allowed on ref class and value class methods

A specifier keyword was incorrectly used on an interface method.

For more information, see Override Specifiers.

Example

The following sample generates C4489.

// C4489.cpp
// compile with: /clr /c /W1
public interface class I {
   void f() new;   // C4489
   virtual void b() override;   // C4489

   void g();   // OK
};