#3664: The pickle module could segfault if a Pickler instance is not correctly initialized:
when a subclass forgets to call the base __init__ method,
or when __init__ is called a second time with invalid parameters

Patch by Alexandre Vassalotti.
diff --git a/Misc/NEWS b/Misc/NEWS
index 8781877..a9adda9 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -33,7 +33,10 @@
 Library
 -------
 
-- telnetlib now works completely in bytes.
+- Issue #3664: The pickle module could segfault if a subclass of Pickler fails
+  to call the base __init__ method.
+
+- Issue #3725: telnetlib now works completely in bytes.
 
 - Issue #4072: Restore build_py_2to3.