operator new和operator delete函数有两个重载版本，没个版本支持相关的new表达式和delete表达式：
void *operator new(size_t); //allocate an object
void *operator new[](size_t); //allocate an array
void *operator delete(void*); //delete memory of an object
void *operator delete[](void*); //delete memory of an array
于是，我写了以下代码：
template<class T>
class Vector{
public:
Vector():elements(0),first_free(0),end(0){}
void push_back(const T&);
void *operator new[](size_t); //allocate an array
void *operator delete[](void*); //delete memory of an array
private:
static std::allocator<T> alloc;
void reallocate();
T* elements; //first element
T* first_free; //behind the last actual element
T* end; //behind vector conent
};
template<class T>
void Vector<T>::push_back(const T& t){
if(first_free==end)
reallocate(); //gets more space and copies existing elements to it
alloc.construct(first_free,t);
++first_free;
}
template <class T>
void Vector<T>::reallocate(){
std::ptrdiff_t size=first_free-elements;
std::ptrdiff_t newcapacity=2*max(size,1);
T* newelements=static_cast<T*>(alloc.operator new[](newcapacity));
uninitialized_copy(elements,first_free,newelements);
for(T *p=first_free;p!=elements;){
alloc.destroy(--p);
}
if(elements)
alloc.operator delete[](elements,end-elements);
elements=newelements;
first_free=elements+size;
end=elements=newcapacity;
}
但是编译后发现出现编译错误：
Error 3 error C2817: return type for 'operator delete' must be 'void' c:\documents and settings\10170660\my documents\visual studio 2010\projects\cp\cp\namespace3.h 54 1 CP
请问各位大侠，这里是不是C++ Primer的一个错误啊？是不是应该是void operator delete[](void*);这样定义operator delete？
