From: Žiga Seilnacht <ziga.seilnacht@gmail.com>
Date: Sun, 11 Mar 2007 15:54:54 +0000 (+0000)
Subject: Patch #1675981: remove unreachable code from type.__new__() method.
X-Git-Tag: v2.6a1~2052
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=890320877658121d9def472ae0d7063b81fc3aed;p=thirdparty%2FPython%2Fcpython.git

Patch #1675981: remove unreachable code from type.__new__() method.
__dict__ and __weakref__ are removed from the slots tuple earlier
in the code, in the loop that mangles slot names. Will backport.
---

diff --git a/Misc/NEWS b/Misc/NEWS
index 4ac68492f713..8d93d0130c2e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@ What's New in Python 2.6 alpha 1?
 Core and builtins
 -----------------
 
+- Patch #1675981: remove unreachable code from ``type.__new__()`` method.
+
 - Patch #1491866: change the complex() constructor to allow parthensized
   forms. This means complex(repr(x)) now works instead of raising a
   ValueError.
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index c2ed4b5666b1..020a9bb646a4 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -1997,13 +1997,11 @@ type_new(PyTypeObject *metatype, PyObject *args, PyObject *kwds)
 				PyTuple_GET_ITEM(slots, i));
 			mp->type = T_OBJECT_EX;
 			mp->offset = slotoffset;
-			if (base->tp_weaklistoffset == 0 &&
-			    strcmp(mp->name, "__weakref__") == 0) {
-				add_weak++;
-				mp->type = T_OBJECT;
-				mp->flags = READONLY;
-				type->tp_weaklistoffset = slotoffset;
-			}
+
+			/* __dict__ and __weakref__ are already filtered out */
+			assert(strcmp(mp->name, "__dict__") != 0);
+			assert(strcmp(mp->name, "__weakref__") != 0);
+
 			slotoffset += sizeof(PyObject *);
 		}
 	}