From eb22ca6f9f264671d0cfe575bdbe0edd04ad13c8 Mon Sep 17 00:00:00 2001
From: Teodor Sigaev <teodor@sigaev.ru>
Date: Fri, 7 Sep 2007 16:26:59 +0000
Subject: [PATCH] Fix indefinit loop in rank_cd for some corner queries. Per
 Daniele Varrazzo <piro@develer.com> bug report.

---
 contrib/tsearch2/rank.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/tsearch2/rank.c b/contrib/tsearch2/rank.c
index f5de5c7746f..5cfeaa38e29 100644
--- a/contrib/tsearch2/rank.c
+++ b/contrib/tsearch2/rank.c
@@ -508,7 +508,7 @@ Cover(DocRepresentation * doc, int len, QUERYTYPE * query, Extention * ext)
 	ptr = doc + lastpos;
 
 	/* find lower bound of cover from founded upper bound, move down */
-	while (ptr >= doc)
+	while (ptr >= doc + ext->pos)
 	{
 		for (i = 0; i < ptr->nitem; i++)
 			ptr->item[i]->istrue = 1;