Delete operator overloading with multiple arguments.

[kapilkumawat]

I have an requirement to overload the delete operator in C++, but it should also accept the sizeof() the object that is to be deleted. Actually I am trying to built a custom memory allocator and deallocator like a pool, which makes me to overload the delete operator.
Small example of the problem is

#include <new>
#include <iostream>
using namespace std;
void operator delete(void* p)
{
cout << "Hello" << endl;
free(p);
} // (1)
void operator delete(void* p, size_t s)
{
cout << "World" << endl;
free(p);
} // (2)
int main()
{
int* p = new int;
delete p; // This cannot render to show 'Hello' or 'World'
}
 

Output

Hello

I want to call the delete with size operator. So please help me how can this program will give the output as World.

[Airslash]

arent they supposed to be void* for new and delete?

also you'll need to implenet the new[] and delete[] and the new(size_t) and delete(size_t) operators as well.

and I believe they need to be static as well.

[weaknessforcats]

Nothing needs to be static.

However, an operator overload requires one of the arguments to be a user-defined type. At shown, these delete overloads will not compile.