From: Teodor Sigaev <teodor@sigaev.ru>
Date: Fri, 7 Sep 2007 16:26:59 +0000 (+0000)
Subject: Fix indefinit loop in rank_cd for some corner queries.
X-Git-Tag: REL8_2_5~21
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=eb22ca6f9f264671d0cfe575bdbe0edd04ad13c8;p=postgresql

Fix indefinit loop in rank_cd for some corner queries.
Per Daniele Varrazzo <piro@develer.com> bug report.
---

diff --git a/contrib/tsearch2/rank.c b/contrib/tsearch2/rank.c
index f5de5c7746..5cfeaa38e2 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;