Reducing revert error strings to under 32 bytes decreases deployment time gas and runtime gas when the revert condition is met. Alternatively, the code could be modified to use custom errors, introduced in Solidity 0.8.4: https://blog.soliditylang.org/2021/04/21/custom-errors/
0xean
commented
2 years ago
Handle
sirhashalot
Vulnerability details
Impact
Strings are broken into 32 byte chunks for operations. Revert error strings over 32 bytes therefore consume extra gas as documented publicly
Proof of Concept
There are multiple examples of this gas optimization opportunity, including but not limited to:
Recommended Mitigation Steps
Reducing revert error strings to under 32 bytes decreases deployment time gas and runtime gas when the revert condition is met. Alternatively, the code could be modified to use custom errors, introduced in Solidity 0.8.4: https://blog.soliditylang.org/2021/04/21/custom-errors/