Compiler Error C2253

 

The new home for Visual Studio documentation is Visual Studio 2017 Documentation on docs.microsoft.com.

The latest version of this topic can be found at Compiler Error C2253.

function' : pure specifier or abstract override specifier only allowed on virtual function

A nonvirtual function is specified as pure virtual.

The following sample generates C2253:

// C2253.cpp  
// compile with: /c  
class A {  
public:  
   void func1() = 0;   // C2253 not virtual  
   virtual void func2() = 0;   // OK  
};  

The following sample generates C2253:

// C2253_2.cpp  
// compile with: /clr /c  
ref struct A {  
   property int Prop_3 {  
      int get() abstract;   // C2253  
      // try the following line instead  
      // virtual int get() abstract;  
  
      void set(int i) abstract;   // C2253  
      // try the following line instead  
      // virtual void set(int i) abstract;  
   }  
};  

Show: