Index: backend/storage/lmgr/s_lock.c
===================================================================
RCS file: /projects/cvsroot/pgsql-server/src/backend/storage/lmgr/s_lock.c,v
retrieving revision 1.16
diff -c -r1.16 s_lock.c
*** backend/storage/lmgr/s_lock.c	8 Aug 2003 21:42:00 -0000	1.16
--- backend/storage/lmgr/s_lock.c	19 Dec 2003 20:01:33 -0000
***************
*** 111,116 ****
--- 111,117 ----
  
  			spins = 0;
  		}
+ 		__asm__ __volatile__("rep;nop\n": : : "memory");
  	}
  }