diff --git a/TODO.txt b/TODO.txt
index 17fba95..3ef1461 100644
--- a/TODO.txt
+++ b/TODO.txt
@@ -28,4 +28,6 @@
 
 //===---------------------------------------------------------------------===//
 
-
+C++ (checker): For iterators, warn of the use of "iterator++" instead
+  of "++iterator" when when the value returned by operator++(int) is
+  ignored.