From 781983a96a113e7dcb266b0a0fdfe9c3453e720a Mon Sep 17 00:00:00 2001
From: Andreas Huggel <ahuggel@gmx.net>
Date: Tue, 1 Aug 2006 15:49:41 +0000
Subject: [PATCH] Prevent overflow in addition. Fixes bug #482

---
 src/tiffvisitor.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tiffvisitor.cpp b/src/tiffvisitor.cpp
index d189f080..60a3088c 100644
--- a/src/tiffvisitor.cpp
+++ b/src/tiffvisitor.cpp
@@ -753,7 +753,7 @@ namespace Exiv2 {
                 return;
             }
             object->pData_ = pData_ + baseOffset() + object->offset();
-            if (object->pData() + object->size() > pLast_) {
+            if (object->size() > static_cast<uint32_t>(pLast_ - object->pData())) {
 #ifndef SUPPRESS_WARNINGS
                 std::cerr << "Warning: Upper boundary of data for "
                           << "directory " << object->groupName()