3373 gcc >= 4.5 concerns about offsetof()

*** 2415,2425 ****
          return (0);
  }
  
  
  #ifndef offsetof
! #define offsetof(s, m)  ((size_t)(&((s *)0)->m))
  #endif
  
  /*
   * re-write the size of the current partition
   */
--- 2415,2429 ----
          return (0);
  }
  
  
  #ifndef offsetof
! #if defined(__GNUC__)
! #define offsetof(s, m)  __builtin_offsetof(s, m)
! #else
! #define offsetof(s, m)  ((size_t)(&(((s *)0)->m)))
! #endif
  #endif
  
  /*
   * re-write the size of the current partition
   */