EVM: zero codehash for non-existing account
Context
Discovered this bug when trying to fix stExtCodeHash
.
For EXTCODEHASH
, as specified on https://www.evm.codes/#3f?fork=shanghai, the opcode returns "hash of the chosen account's code, the empty hash (0xc5d24601...) if the account has no code, or 0 if the account does not exist or has been destroyed."(Reference can also be found in section 4.1 of the Ethereum yellow paper) We didn't consider the case where the account does not exist or has been destroyed. This MR fixes the problem
Manually testing the MR
Run the evaluation test. Number of successful test increase from to 16073 to 16111
Checklist
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Document the interface of any function added or modified (see the coding guidelines) -
Document any change to the user interface, including configuration parameters (see node configuration) -
Provide automatic testing (see the testing guide). -
For new features and bug fixes, add an item in the appropriate changelog ( docs/protocols/alpha.rst
for the protocol and the environment,CHANGES.rst
at the root of the repository for everything else). -
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Edited by Hantang Sun