3373 gcc >= 4.5 concerns about offsetof()

*** 524,534 ****
  
  /*
   * Yet another standard thing that is not standard ...
   */
  #ifndef offsetof
! #define offsetof(s, m)  ((size_t)(&((s *)0)->m))
  #endif
  
  /*
   * Build a 32bit rdc_set structure and copyout to the user level.
   */
--- 524,538 ----
  
  /*
   * Yet another standard thing that is not standard ...
   */
  #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
  
  /*
   * Build a 32bit rdc_set structure and copyout to the user level.
   */