new and delete operator

[strange]

Hi,

I've found some strange behaviour of the new and delete operators.

The following code overwrites the new, new[], delete and delete[] operators, adding a message being printed every time they are called. Then I use each operator once and get some unexpected behaviour. The code is:

#include <iostream>
#include <vector>

using namespace std;

inline void* operator new	(unsigned int size)
{
	cout << "new: " << size << "\n";
	return malloc(size);
}

inline void* operator new[]	(unsigned int size)
{
	cout << "new[]: " << size << "\n";
	return malloc(size);
}

inline void operator delete (void * buf)
{
	cout << "delete\n";
	free(buf);
}

inline void operator delete[] (void * buf)
{
	cout << "delete[]\n";
	free(buf);
}

#pragma argsused
int main (char * argv, unsigned int argc)
{
	vector<int> *var = new vector<int>;
	vector<int> *arr = new vector<int>[1];

	delete var;
	delete[] arr;


	return 0;
}

and the program output is:

new: 32
new[]: 36
delete
delete
delete


leaving two questions:
[list=1][*]why are there two 'delete's and no 'delete[]'?[*]why is an array with size 1 four bytes larger than a plain variable? (with integer this is NOT the case)[/list=1]

Thanks!