From 45b15a8fb327d18078b29f9517bdd08aec366a7b Mon Sep 17 00:00:00 2001
From: Richard Barrell <rchrd@brrll.co.uk>
Date: Tue, 8 Nov 2011 16:41:57 -0800
Subject: Raise a ValueError from HTTPFound.__init__() if location is None.

---
 pyramid/httpexceptions.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pyramid/httpexceptions.py b/pyramid/httpexceptions.py
index 4dbca7021..bd745df87 100644
--- a/pyramid/httpexceptions.py
+++ b/pyramid/httpexceptions.py
@@ -434,6 +434,8 @@ ${html_comment}''')
 
     def __init__(self, location='', detail=None, headers=None, comment=None,
                  body_template=None, **kw):
+        if location is None:
+            raise ValueError("HTTP redirects need a location to redirect to.")
         super(_HTTPMove, self).__init__(
             detail=detail, headers=headers, comment=comment,
             body_template=body_template, location=location, **kw)
-- 
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