From 2337616f94a3ad192900a33c1d13bec79c9bb9a0 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Wed, 12 Nov 2008 03:30:48 +0000
Subject: [PATCH] msvc9 error

---
 dtool/src/dtoolbase/stl_compares.I | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dtool/src/dtoolbase/stl_compares.I b/dtool/src/dtoolbase/stl_compares.I
index 64f462a797..002db30aca 100644
--- a/dtool/src/dtoolbase/stl_compares.I
+++ b/dtool/src/dtoolbase/stl_compares.I
@@ -205,7 +205,9 @@ INLINE size_t sequence_hash<Key, Compare>::
 add_hash(size_t hash, const Key &key) {
 #ifdef _DEBUG
   // We assume that the sequence is laid out sequentially in memory.
-  assert(&(*key.end()) - &key[0] == key.size());
+  if (key.size() > 0) {
+    assert(&key[key.size() - 1] - &key[0] == key.size() - 1);
+  }
 #endif
   size_t num_bytes = (key.size() * sizeof(key[0]));
   return AddHash::add_hash(hash, (const PN_uint8 *)&key[0], num_bytes);