C++中new的二三事

 1 #include <iostream>
 2 using std::cout;
 3 using std::endl;
 4 #define new New (__FILE__,  __LINE__) 
 5 
 6 void * operator new (size_t size,  const char * filename,  int lineno) 
 7 { 
 8  cout <<"NEW: filename =" <<filename <<",  lineno =" <<lineno << endl; 
 9  cout <<"Lineno? "<< size << endl;
10  return operator new (size); 
11 }
12 int main (int argc,  char ** argv) 
13 { 
14  int * p = new  (__FILE__,  __LINE__) int ; 
15  cout <<"Hello World!" <<endl; 
16  delete p; 
17  return 0; 
18 }