Put back the essence of Jeremy's original XXX comment.

diff --git a/Python/ceval.c b/Python/ceval.c
index 8d0f7e6ce2f662a8f1cb0e9d2b4dc0c462c4b205..4e3209ff81b96d88eca47ec4af31e71608addc27 100644 (file)
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -3654,7 +3654,9 @@ call_function(PyObject ***pp_stack, int oparg
        }
 
        /* Clear the stack of the function object and the arguments,
-          in case they weren't consumed already */
+          in case they weren't consumed already.
+          XXX(twouters) when are they not consumed already?
+        */
        while ((*pp_stack) > pfunc) {
                w = EXT_POP(*pp_stack);
                Py_DECREF(w);