From 71e92df9249274796224ae6d72ca83f0bca942d7 Mon Sep 17 00:00:00 2001
From: Kirill Kuzminykh <cykooz@gmail.com>
Date: Thu, 2 Mar 2017 22:40:36 +0300
Subject: Reverted couple useless fixes of memory leaks.

---
 pyramid/config/views.py      | 2 +-
 pyramid/registry.py          | 4 +++-
 pyramid/tests/test_tweens.py | 4 ----
 pyramid/tweens.py            | 2 +-
 4 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/pyramid/config/views.py b/pyramid/config/views.py
index b6996b6d2..65c9da585 100644
--- a/pyramid/config/views.py
+++ b/pyramid/config/views.py
@@ -933,7 +933,7 @@ class ViewsConfiguratorMixin(object):
             if not exception_only and isexc:
                 derived_view = runtime_exc_view(derived_view, derived_exc_view)
 
-            derived_view.__discriminator__ = lambda *arg: view_intr.discriminator
+            derived_view.__discriminator__ = lambda *arg: discriminator
             # __discriminator__ is used by superdynamic systems
             # that require it for introspection after manual view lookup;
             # see also MultiView.__discriminator__
diff --git a/pyramid/registry.py b/pyramid/registry.py
index 20b3643e9..7589dfcac 100644
--- a/pyramid/registry.py
+++ b/pyramid/registry.py
@@ -276,7 +276,9 @@ class Deferred(object):
 
     @reify
     def value(self):
-        return self.func()
+        result = self.func()
+        del self.func
+        return result
 
     def resolve(self):
         return self.value
diff --git a/pyramid/tests/test_tweens.py b/pyramid/tests/test_tweens.py
index d2053e6b8..c8eada34c 100644
--- a/pyramid/tests/test_tweens.py
+++ b/pyramid/tests/test_tweens.py
@@ -31,7 +31,6 @@ class Test_excview_tween_factory(unittest.TestCase):
             raise HTTPNotFound
         tween = self._makeOne(handler)
         request = Request.blank('/')
-        request.registry = self.config.registry
         result = tween(request)
         self.assertEqual(result.status, '404 Not Found')
 
@@ -45,7 +44,6 @@ class Test_excview_tween_factory(unittest.TestCase):
             raise ValueError
         tween = self._makeOne(handler)
         request = Request.blank('/')
-        request.registry = self.config.registry
         result = tween(request)
         self.assertTrue(b'foo' in result.body)
 
@@ -57,7 +55,6 @@ class Test_excview_tween_factory(unittest.TestCase):
             raise ValueError
         tween = self._makeOne(handler)
         request = Request.blank('/')
-        request.registry = self.config.registry
         request.method = 'POST'
         self.assertRaises(ValueError, lambda: tween(request))
 
@@ -67,7 +64,6 @@ class Test_excview_tween_factory(unittest.TestCase):
             raise ValueError
         tween = self._makeOne(handler)
         request = Request.blank('/')
-        request.registry = self.config.registry
         self.assertRaises(ValueError, lambda: tween(request))
 
 class DummyRequest:
diff --git a/pyramid/tweens.py b/pyramid/tweens.py
index 19daf9e5e..a842b1133 100644
--- a/pyramid/tweens.py
+++ b/pyramid/tweens.py
@@ -42,7 +42,7 @@ def excview_tween_factory(handler, registry):
             provides = providedBy(exc)
             try:
                 response = _call_view(
-                    request.registry,
+                    registry,
                     request,
                     exc,
                     provides,
-- 
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