From: Adam Dickmeiss <adam@indexdata.dk>
Date: Tue, 3 May 2005 13:12:38 +0000 (+0000)
Subject: Fixed bug #305: Scanning with negative position.
X-Git-Tag: ZEBRA.1.3.26~20
X-Git-Url: http://sru.miketaylor.org.uk/?a=commitdiff_plain;h=4206aefaed707aa84156c5f31d86050fa40fd13b;p=idzebra-moved-to-github.git

Fixed bug #305: Scanning with negative position.
---

diff --git a/index/zrpn.c b/index/zrpn.c
index 0ef8529..071a007 100644
--- a/index/zrpn.c
+++ b/index/zrpn.c
@@ -1,4 +1,4 @@
-/* $Id: zrpn.c,v 1.141.2.10 2005-04-29 18:56:20 adam Exp $
+/* $Id: zrpn.c,v 1.141.2.11 2005-05-03 13:12:38 adam Exp $
    Copyright (C) 1995-2005
    Index Data Aps
 
@@ -2792,6 +2792,11 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
     {
         *num_entries -= (after-i);
         *is_partial = 1;
+	if (*num_entries <= 0)
+	{
+	    *num_entries = 0;
+	    return;
+	}
     }
 
     /* consider terms before main term */
@@ -2875,6 +2880,11 @@ void rpn_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
         *is_partial = 1;
         *position -= i;
         *num_entries -= i;
+	if (*num_entries <= 0)
+	{
+	    *num_entries = 0;
+	    return;
+	}
     }
     *list = glist + i;               /* list is set to first 'real' entry */