bytes should be verboten in sum() (fixes #12654)
diff --git a/Misc/NEWS b/Misc/NEWS
index 5cdcb79..0b205ad 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,8 @@
 Core and Builtins
 -----------------
 
+- Forbid summing bytes in sum().
+
 - Verify the types of AST strings and identifiers provided by the user before
   compiling them.