Issue #12149: Update the method cache after a type's dictionnary gets
cleared by the garbage collector. This fixes a segfault when an instance
and its type get caught in a reference cycle, and the instance's
deallocator calls one of the methods on the type (e.g. when subclassing
IOBase).
Diagnosis and patch by Davide Rizzo.
diff --git a/Misc/ACKS b/Misc/ACKS
index 45b4042..625317d 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -736,6 +736,7 @@
Nicholas Riley
Jean-Claude Rimbault
Juan M. Bello Rivas
+Davide Rizzo
Anthony Roach
Mark Roberts
Jim Robinson
diff --git a/Misc/NEWS b/Misc/NEWS
index 9a46b72..3df8e95 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,12 @@
Core and Builtins
-----------------
+- Issue #12149: Update the method cache after a type's dictionnary gets
+ cleared by the garbage collector. This fixes a segfault when an instance
+ and its type get caught in a reference cycle, and the instance's
+ deallocator calls one of the methods on the type (e.g. when subclassing
+ IOBase). Diagnosis and patch by Davide Rizzo.
+
- Issue #9611, #9015: FileIO.read() clamps the length to INT_MAX on Windows.
- When a generator yields, do not retain the caller's exception state on the