Issue #8259: Clarify that there's an upper bound on the right-hand operand of a shift operator.
diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index 4677fdc..60ab6ea 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -1000,6 +1000,9 @@
by *n* bits is defined as multiplication with ``pow(2, n)``. Negative shift
counts raise a :exc:`ValueError` exception.
+.. note:: In the current implementation, the right-hand operand is required
+ to be at most :attr:`sys.maxsize`. If the right-hand operand is larger than
+ :attr:`sys.maxsize` an :exc:`OverflowError` exception is raised.
.. _bitwise: