Index: /trunk/coverager.c
===================================================================
--- /trunk/coverager.c	(revision 461)
+++ /trunk/coverager.c	(revision 462)
@@ -521,5 +521,5 @@
 
 	for (; len >= sizeof(long) * 2; len -= sizeof(long) * 2, p += 2) {
-		add_index_long(return_value, p[0], p[1]);
+		add_index_long(return_value, p[0], p[1] < 0 ? 0 : p[1]);
 	}
 }