overloading new/delete

Question

I'm making a little memory leak finder in my program, but my way of overloading new and delete (and also new[] and delete[]) doesn't seem to do anything.

void* operator new (unsigned int size, const char* filename, int line) {     void* ptr = new void[size];     memleakfinder.AddTrack(ptr,size,filename,line);     return ptr; } 

The way I overloaded new is shown in the code snippet above. I guess it's something with the operator returning void* but I do not know what to do about it.

Answer 1

Maybe you can do what you want with a little bit of preprocessor magic:

#include <iostream>  using namespace std;  void* operator new (size_t size, const char* filename, int line) {     void* ptr = new char[size];     cout << "size = " << size << " filename = " << filename << " line = " << line << endl;     return ptr; }  #define new new(__FILE__, __LINE__)  int main() {     int* x = new int; } 

Answer 2

I think the problem here is that your new's parameter profile doesn't match that of the standard operator new, so that one isn't getting hidden (and is thus still being used).

Your parameter profiles for new and delete need to look like this:

void* operator new(size_t); void operator delete(void*, size_t);