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Optimize Alchemist.sol#_withdrawFundsTo #102

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code423n4 opened this issue Nov 18, 2021 · 0 comments
Open

Optimize Alchemist.sol#_withdrawFundsTo #102

code423n4 opened this issue Nov 18, 2021 · 0 comments
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bug Something isn't working G (Gas Optimization) resolved Finding has been patched by sponsor (sponsor pls link to PR containing fix) sponsor confirmed Sponsor agrees this is a problem and intends to fix it (OK to use w/ "disagree with severity")

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@code423n4
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Vulnerability details

Proof of Concept

L839-L843 is as follow:

            AlchemistVault.Data storage _activeVault = _vaults.last();
            (uint256 _withdrawAmount, uint256 _decreasedValue) = _activeVault.withdraw(
                _recipient,
                _remainingAmount
            );

It can be replaced by following code block, since there is no reason to save it to memory.

            (uint256 _withdrawAmount, uint256 _decreasedValue) = _vaults.last().withdraw(
                _recipient,
                _remainingAmount
            );

Tools Used

Manual analysis

@code423n4 code423n4 added bug Something isn't working G (Gas Optimization) labels Nov 18, 2021
code423n4 added a commit that referenced this issue Nov 18, 2021
@Xuefeng-Zhu Xuefeng-Zhu added the sponsor confirmed Sponsor agrees this is a problem and intends to fix it (OK to use w/ "disagree with severity") label Dec 1, 2021
@Xuefeng-Zhu Xuefeng-Zhu added the resolved Finding has been patched by sponsor (sponsor pls link to PR containing fix) label Feb 10, 2022
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Labels
bug Something isn't working G (Gas Optimization) resolved Finding has been patched by sponsor (sponsor pls link to PR containing fix) sponsor confirmed Sponsor agrees this is a problem and intends to fix it (OK to use w/ "disagree with severity")
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