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docs/abi-spec.rst: Note about zero-length fixed-size arrays

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Kamil Śliwak 2020-08-31 18:35:01 +02:00
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@ -61,7 +61,7 @@ The following elementary types exist:
- ``bool``: equivalent to ``uint8`` restricted to the values 0 and 1. For computing the function selector, ``bool`` is used. - ``bool``: equivalent to ``uint8`` restricted to the values 0 and 1. For computing the function selector, ``bool`` is used.
- ``fixed<M>x<N>``: signed fixed-point decimal number of ``M`` bits, ``8 <= M <= 256``, - ``fixed<M>x<N>``: signed fixed-point decimal number of ``M`` bits, ``8 <= M <= 256``,
``M % 8 ==0``, and ``0 < N <= 80``, which denotes the value ``v`` as ``v / (10 ** N)``. ``M % 8 == 0``, and ``0 < N <= 80``, which denotes the value ``v`` as ``v / (10 ** N)``.
- ``ufixed<M>x<N>``: unsigned variant of ``fixed<M>x<N>``. - ``ufixed<M>x<N>``: unsigned variant of ``fixed<M>x<N>``.
@ -76,6 +76,9 @@ The following (fixed-size) array type exists:
- ``<type>[M]``: a fixed-length array of ``M`` elements, ``M >= 0``, of the given type. - ``<type>[M]``: a fixed-length array of ``M`` elements, ``M >= 0``, of the given type.
.. note::
While this ABI specification can express fixed-length arrays with zero elements, they're not supported by the compiler.
The following non-fixed-size types exist: The following non-fixed-size types exist:
- ``bytes``: dynamic sized byte sequence. - ``bytes``: dynamic sized byte sequence.