From 1dd6bd19fa7c71e4c2ee7226266ea0291049a8ee Mon Sep 17 00:00:00 2001
From: Teodor Sigaev <teodor@sigaev.ru>
Date: Mon, 31 Oct 2005 13:47:09 +0000
Subject: [PATCH] Add sanity check of query

---
 contrib/tsearch2/rank.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/contrib/tsearch2/rank.c b/contrib/tsearch2/rank.c
index 40bec1f484..445898eff6 100644
--- a/contrib/tsearch2/rank.c
+++ b/contrib/tsearch2/rank.c
@@ -303,7 +303,8 @@ calc_rank_or(float *w, tsvector * t, QUERYTYPE * q)
 */
                 res = res + ( wjm + resj - wjm/((jm+1)*(jm+1)))/1.64493406685; 
 	}
-	res = res /size;
+	if ( size > 0 )
+		res = res /size;
 	pfree(item);
 	return res;
 }
-- 
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