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Compiler Error C2689

'function' : a friend function cannot be defined within a local class

You can declare but not define a friend function in a local class.

The following sample generates C2689:

// C2689.cpp
// compile with: /c
void g() {
   void f2();
   class X {
      friend void f2(){}   // C2689
      friend void f2();   // OK
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