--- libev/ev.c	2009/07/19 20:39:54	1.308
+++ libev/ev.c	2009/07/26 04:24:17	1.309
@@ -1059,7 +1059,7 @@
     {
       int c = k << 1;
 
-      if (c > N + HEAP0 - 1)
+      if (c >= N + HEAP0)
         break;
 
       c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])