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-rw-r--r--Help/release/dev/variable_watch-no-allowed-access.rst8
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+variable_watch-no-allowed-access
+--------------------------------
+
+* Callbacks established by the :command:`variable_watch` command will no
+ longer receive the ``ALLOWED_UNKNOWN_READ_ACCESS`` access type when
+ the undocumented ``CMAKE_ALLOW_UNKNOWN_VARIABLE_READ_ACCESS`` variable is
+ set. Uninitialized variable accesses will always be reported as
+ ``UNKNOWN_READ_ACCESS``.