Issue #4935: The overflow checking code in the expandtabs() method common
to str, bytes and bytearray could be optimized away by the compiler (*), letting
the interpreter segfault instead of raising an error.

(*) or at least it is our interpretation
diff --git a/Misc/NEWS b/Misc/NEWS
index 6695a24..ac30897 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,10 @@
 Core and Builtins
 -----------------
 
+- Issue #4935: The overflow checking code in the expandtabs() method common
+  to str, bytes and bytearray could be optimized away by the compiler, letting
+  the interpreter segfault instead of raising an error.
+
 - Issue #3720: Fix a crash when an iterator modifies its class and removes its
   __next__ method.