Backport of r64212
Issue #1683: prevent forking from interfering in threading storage.
diff --git a/Misc/NEWS b/Misc/NEWS
index 9993666..b83c731 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,8 @@
 Core and builtins
 -----------------
 
+- Issue #1683: prevent forking from interfering in threading storage.
+
 - Issue #4597: Fixed several opcodes that weren't always propagating
   exceptions.