catch nasty exception classes with __new__ that doesn't return a exception (closes #11627)
Patch from Andreas Stührk.
diff --git a/Misc/NEWS b/Misc/NEWS
index 18ee9d3..cba337a 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,9 @@
Core and Builtins
-----------------
+- Issue #11627: Fix segfault when __new__ on a exception returns a non-exception
+ class.
+
- 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