Issue #18896: Python function can now have more than 255 parameters.
collections.namedtuple() now supports tuples with more than 255 elements.
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 828421c..e6d8e50 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -926,7 +926,7 @@
             def inner():
                 return x
             return inner
-        check(get_cell2.__code__, size('6i13P') + 1)
+        check(get_cell2.__code__, size('6i13P') + calcsize('n'))
         # complex
         check(complex(0,1), size('2d'))
         # method_descriptor (descriptor object)