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Merge pull request #4818 from ethereum/clarifyConstructorArgs

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Clarify constructor arguments.
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chriseth 2018-08-16 14:54:28 +02:00 committed by GitHub
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docs/miscellaneous.rst
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@ -87,10 +87,14 @@ Solidity always places new objects at the free memory pointer and memory is neve
Layout of Call Data
*******************
When a Solidity contract is deployed and when it is called from an
account, the input data is assumed to be in the format in :ref:`the ABI
specification <ABI>`. The ABI specification requires arguments to be padded to multiples of 32
bytes. The internal function calls use a different convention.
The input data for a function call is assumed to be in the format defined by the :ref:`ABI
specification <ABI>`. Among others, the ABI specification requires arguments to be padded to multiples of 32
bytes. The internal function calls use a different convention.
Arguments for the constructor of a contract are directly appended at the end of the
contract's code, also in ABI encoding. The constructor will access them through a hard-coded offset, and
not by using the ``codesize`` opcode, since this of course changes when appending
data to the code.
.. index: variable cleanup