diff -crB httpd-2.2.17/srclib/apr/include/apr_ring.h httpd-2.2.17-new/srclib/apr/include/apr_ring.h
*** httpd-2.2.17/srclib/apr/include/apr_ring.h	2008-06-02 04:12:00.000000000 +0400
--- httpd-2.2.17-new/srclib/apr/include/apr_ring.h	2011-02-16 13:28:20.951000091 +0300
***************
*** 90,97 ****
   */
  #define APR_RING_HEAD(head, elem)					\
      struct head {							\
! 	struct elem *next;						\
! 	struct elem *prev;						\
      }
  
  /**
--- 90,97 ----
   */
  #define APR_RING_HEAD(head, elem)					\
      struct head {							\
! 	struct elem * volatile next;					\
! 	struct elem * volatile prev;					\
      }
  
  /**