Issue #4176: Pickle would crash the interpreter when a __reduce__ function
does not return an iterator for the 4th and 5th items.
(sequence-like and mapping-like state)
A list is not an iterator...
Will backport to 2.6 and 2.5.
diff --git a/Misc/NEWS b/Misc/NEWS
index d6f3cae..3017d4b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,9 @@
Core and Builtins
-----------------
+- Issue #4176: Fixed a crash when pickling an object which ``__reduce__``
+ method does not return iterators for the 4th and 5th items.
+
- Issue #4209: Enabling unicode_literals and the print_function in the same
__future__ import didn't work.