From fc9be6a599c5d5801d067a8d9820e9c1d8fd57b7 Mon Sep 17 00:00:00 2001
From: Ulrich Czekalla <ulrich@codeweavers.com>
Date: Tue, 11 May 2004 22:16:54 +0000
Subject: [PATCH] Handle case where iterator range contains 0 elements.

---
 dlls/comctl32/listview.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/dlls/comctl32/listview.c b/dlls/comctl32/listview.c
index 52ea2d43fbb..94d3c02d21a 100644
--- a/dlls/comctl32/listview.c
+++ b/dlls/comctl32/listview.c
@@ -1113,8 +1113,13 @@ static RANGE iterator_range(ITERATOR* i)
 
     if (!i->ranges) return i->range;
 
-    range.lower = (*(RANGE*)DPA_GetPtr(i->ranges->hdpa, 0)).lower;
-    range.upper = (*(RANGE*)DPA_GetPtr(i->ranges->hdpa, DPA_GetPtrCount(i->ranges->hdpa) - 1)).upper;
+    if (DPA_GetPtrCount(i->ranges->hdpa) > 0)
+    {
+        range.lower = (*(RANGE*)DPA_GetPtr(i->ranges->hdpa, 0)).lower;
+        range.upper = (*(RANGE*)DPA_GetPtr(i->ranges->hdpa, DPA_GetPtrCount(i->ranges->hdpa) - 1)).upper;
+    }
+    else range.lower = range.upper = 0;
+
     return range;
 }