/*

    File:   private-copy-constructor.cpp

    Version:    1.0

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        The Apple Software is provided by Apple on an "AS IS" basis.  APPLE MAKES NO

        WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED

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    Copyright © 2005 Apple Computer, Inc., All Rights Reserved

*/

class A {

    public: A();

    private: A (const A &);

};

void func1(const A &);

void func2() {

#if BAD

  /* Here 'A()' creates a new temporary object.  ISO C++ says

     ([dcl.init.ref] paragraph 5) that when this temporary object is

     bound to the parameter of func1(), another temporary object is

     created, using the copy constructor, which is private in A.

     ISO C++ says that the creation may be optimised away

     ([class.copy]), which GCC does, but even if it is optimised away

     all the access checking and other restrictions must be performed

     as if the copy constructor was actually called ([class.temporary]

     paragraph 1).

     Since the copy constructor is private, it can't be used, so this

     is not allowed.  */

  func1 (A());

#else

  /* This can be fixed by giving the result of A() a name, in this case 'a1',

     so that the second temporary does not need to be created and the 

     copy constructor does not need to be called.  */

  A a1;

  func1 (a1);

#endif

}