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-rw-r--r--docs/units-and-global-variables.rst7
1 files changed, 7 insertions, 0 deletions
diff --git a/docs/units-and-global-variables.rst b/docs/units-and-global-variables.rst
index 2571f20a..e7f41ed1 100644
--- a/docs/units-and-global-variables.rst
+++ b/docs/units-and-global-variables.rst
@@ -169,6 +169,13 @@ For more information, see the section on :ref:`address`.
Use a pattern where the recipient withdraws the money.
.. note::
+ If storage variables are accessed via a low-level delegatecall, the storage layout of the two contracts
+ must align in order for the called contract to correctly access the storage variables of the calling contract by name.
+ This is of course not the case if storage pointers are passed as function arguments as in the case for
+ the high-level libraries.
+
+
+.. note::
The use of ``callcode`` is discouraged and will be removed in the future.
.. index:: this, selfdestruct