(Merge 3.1) Issue #9756: When calling a method descriptor or a slot wrapper
descriptor, the check of the object type doesn't read the __class__ attribute
anymore.  Fix a crash if a class override its __class__ attribute (e.g. a proxy
of the str type).
diff --git a/Misc/NEWS b/Misc/NEWS
index bb6f5ef..6674c0b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -9,6 +9,11 @@
 Core and Builtins
 -----------------
 
+- Issue #9756: When calling a method descriptor or a slot wrapper descriptor,
+  the check of the object type doesn't read the __class__ attribute anymore.
+  Fix a crash if a class override its __class__ attribute (e.g. a proxy of the
+  str type).
+
 - Issue #10517: After fork(), reinitialize the TLS used by the PyGILState_*
   APIs, to avoid a crash with the pthread implementation in RHEL 5.  Patch
   by Charles-François Natali.