assignment operators for union member classes

[Mike Welsen <mikewelsen@xxxxxxxxxxx>]

Hi,

Does anyone know why asignment operators are not allowed for union class members ?
Other compilers accept this code, but I can't compile the following code with GCC.

( error: member 'A C::::::aa' with copy assignment operator not allowed in union)

class A{
public:
int a;
A& operator=(const A&){return (*this);}
int AFunc(void){}
};


class B{
public:
int b;
};


class C{
public:
C(){}
union
{
struct {A aa;}; // builds with warning if level4is set
B bb;
};
};

Thanks

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