From 9a6b447843b26f5b58cdc51f6a046c1b5c5e1b7f Mon Sep 17 00:00:00 2001 From: chriseth Date: Wed, 15 Aug 2018 10:40:00 +0200 Subject: Clarify constructor arguments. --- docs/miscellaneous.rst | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'docs') diff --git a/docs/miscellaneous.rst b/docs/miscellaneous.rst index c0c7cb1b..7225144a 100644 --- a/docs/miscellaneous.rst +++ b/docs/miscellaneous.rst @@ -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 `. 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 `. 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 -- cgit v1.2.3