C/C++ Compiler (cl.hlp) (Table of Contents; Topic list)
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C2245
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     Compiler error C2245
 
     nonexistent function 'identifier' specified as friend
 
     The specified identifier was not a function.
 
     Only a function can be specified as a friend.
 
     The following is an example of this error:
 
          class C
          {
          public:
             int i;                  // i is not a function
             void func();
          };
 
          class S
          {
          public:
             friend void C::i();     // error
             friend void C::func();  // OK
          };
                                    -♦-