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─────Run-Time Library───────────────────────────────────────────────────────
 
     Use the C++ _set_new_handler function to gain control if the new
     operator fails to allocate memory. The run-time system
     automatically calls _set_new_handler when new fails.
 
     To use _set_new_handler, you must write an exception-handling
     function and then pass it as an argument to _set_new_handler. To
     facilitate the easy declaration of this new handler, three
     pointer-to-function types (_PNH, _PNHH, and _PNHB) are defined in
     NEW.H.
     See: _PNH, _PNHH, _PNHB
 
     Basically, _set_new_handler is a garbage-collection scheme. The
     run-time system retries allocation each time your function returns
     a nonzero value and fails new if your function returns 0.
 
     An occurrence of one of the _set_new_handler functions in a program
     registers the exception-handling function specified in the argument
     list with the run-time system:
 
          #include <new.h>
          int handle_program_memory_depletion( size_t )
          {
              // Your code
          }
 
          void main( void )
          {
              _set_new_handler( handle_program_memory_depletion );
              int *pi = new int[BIG_NUMBER];
          }
 
     You can save the function address that was last passed to the
     _set_new_handler function and then reinstate it at a later time:
 
          _PNH old_handler = _set_new_handler( my_handler );
          // Code that requires my_handler
          _set_new_handler( old_handler )
          // Code that requires old_handler
 
     Return Value
 
     The _set_new_handler function returns a pointer to the allocated
     program memory if successful. It returns a 0 if it's unsuccessful.
                                    -♦-