Compiler Error C3248

 

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The latest version of this topic can be found at Compiler Error C3248.

function1': function declared as '__sealed' cannot be overridden by 'function2'

A derived class tried to override a __sealed virtual method.

C3248 is only reachable using /clr:oldSyntax.

The following sample generates C3248:

// C3248b.cpp  
// compile with: /clr:oldSyntax  
using namespace System;  
  
__gc struct B {  
   __sealed virtual void func();  
};  
  
__gc struct D : B {  
   void func();   // C3248  
};  

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