Compiler Error C3217

'param' : generic parameter cannot be constrained in this declaration

A constraint was ill formed; the constraint generic parameter must agree with the generic class template parameter.

The following sample generates C3217:

// C3217.cpp  
// compile with: /clr  
interface struct A {};  

generic <class T>  
ref class C {  
   generic <class T1>  
   where T : A   // C3217  
   void f();  
};  

The following sample demonstrates a possible resolution:

// C3217b.cpp  
// compile with: /clr /c  
interface struct A {};  

generic <class T>  
ref class C {  
   generic <class T1>  
   where T1 : A  
   void f();  
};