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-rw-r--r--Doc/reference/expressions.rst3
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diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index bb25956..07647b3 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -914,6 +914,9 @@ the left or right by the number of bits given by the second argument.
A right shift by *n* bits is defined as division by ``pow(2,n)``. A left shift
by *n* bits is defined as multiplication with ``pow(2,n)``.
+.. 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: