*** /usr/include/sys/stdsyms.h	Thu Aug 26 21:53:16 2004
--- sys/stdsyms.h	Thu Jul 14 14:04:47 2011
***************
*** 128,134 ****
  
  
  #if defined(_XOPEN_SOURCE)
! #  if (_XOPEN_SOURCE-1+1) == 500
  #     ifndef _INCLUDE_XOPEN_SOURCE_500
  #        define _INCLUDE_XOPEN_SOURCE_500
  #     endif
--- 128,134 ----
  
  
  #if defined(_XOPEN_SOURCE)
! #  if (_XOPEN_SOURCE-1+1) >= 500
  #     ifndef _INCLUDE_XOPEN_SOURCE_500
  #        define _INCLUDE_XOPEN_SOURCE_500
  #     endif