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diff --git a/Doc/library/dbm.rst b/Doc/library/dbm.rst
index 1abc36c..ab45cac 100644
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@@ -361,6 +361,11 @@ The module defines the following:
database has to be created. It defaults to octal ``0o666`` (and will be modified
by the prevailing umask).
+ .. warning::
+ It is possible to crash the Python interpreter when loading a database
+ with a sufficiently large/complex entry due to stack depth limitations in
+ Python's AST compiler.
+
.. versionchanged:: 3.5
:func:`.open` always creates a new database when the flag has the value
``'n'``.