From b82d0264dce60a572df85b36d7bc35f971c9843c Mon Sep 17 00:00:00 2001
From: MurphyMarkW <murphy.mark.w+github@gmail.com>
Date: Tue, 30 Jun 2015 02:04:30 -0500
Subject: [PATCH] Fixes suffix range requests to truncate ranges.

---
 moto/s3/responses.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/moto/s3/responses.py b/moto/s3/responses.py
index b6113fafe..adaefc230 100644
--- a/moto/s3/responses.py
+++ b/moto/s3/responses.py
@@ -254,7 +254,7 @@ class ResponseObject(_TemplateEnvironmentMixin):
         if begin is not None:  # byte range
             end = last if end is None else min(end, last)
         elif end is not None:  # suffix byte range
-            begin = length - end
+            begin = length - min(end, length)
             end = last
         else:
             return 400, headers, ""