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Clarify that bytes values do not need to be aligned #12576

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Clarify that bytes values do not need to be aligned #12576

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6 changes: 4 additions & 2 deletions docs/internals/layout_in_memory.rst
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Expand Up @@ -21,8 +21,10 @@ memory is never freed (this might change in the future).
Elements in memory arrays in Solidity always occupy multiples of 32 bytes (this
is even true for ``bytes1[]``, but not for ``bytes`` and ``string``).
Multi-dimensional memory arrays are pointers to memory arrays. The length of a
dynamic array is stored at the first slot of the array and followed by the array
elements.
dynamic array is stored at the first 32 bytes of the array and followed by the
array elements. ``bytes`` and ``string`` values do not need to be aligned to
slot boundaries, and bytes in the last slot but after the end of the data do
not need to be zero.

.. warning::
There are some operations in Solidity that need a temporary memory area
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