diff --git a/Misc/NEWS b/Misc/NEWS
index f399fde..4954c8b 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -14,6 +14,10 @@
 
 - Issue #4978: Passing keyword arguments as unicode strings is now allowed.
 
+- Issue 1242657: the __len__() and __length_hint__() calls in several tools
+  were suppressing all exceptions.  These include list(), filter(), map(),
+  zip(), and bytearray().
+
 - os.ftruncate raises OSErrors instead of IOErrors for consistency with other os
   functions.