Home » U++ Library support » U++ Core » Unsafe Deep Copy
| Unsafe Deep Copy [message #8787] |
Sat, 31 March 2007 12:11  |
victorb
Messages: 78
Registered: December 2005
Location: Nice, France
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I think there might be an issue with the following code
template <class T, class B = EmptyClass>
class DeepCopyOption : public B {
public:
friend T& operator<<=(T& dest, const T& src)
{ (&dest)->T::~T(); ::new(&dest) T(src, 1); return dest; }
...
};
The issue occurs when you are self deep copying :
a <<= a;
One solution is
friend T& operator<<=(T& dest, const T& src)
{ if (&src != &dest) {(&dest)->T::~T(); ::new(&dest) T(src, 1);} return dest; }
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