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Dust rounding on claimReward #83

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merged 2 commits into from
Apr 10, 2024
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Dust rounding on claimReward #83

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bac9031
dust rounding
wildmolasses Apr 9, 2024
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wildmolasses Apr 10, 2024
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4 changes: 3 additions & 1 deletion src/UniStaker.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -802,7 +802,9 @@ contract UniStaker is INotifiableRewardReceiver, Multicall, EIP712, Nonces {

uint256 _reward = scaledUnclaimedRewardCheckpoint[_beneficiary] / SCALE_FACTOR;
if (_reward == 0) return;
scaledUnclaimedRewardCheckpoint[_beneficiary] = 0;
// retain sub-wei dust that would be left due to the precision loss
scaledUnclaimedRewardCheckpoint[_beneficiary] =
scaledUnclaimedRewardCheckpoint[_beneficiary] - (_reward * SCALE_FACTOR);
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emit RewardClaimed(_beneficiary, _reward);

SafeERC20.safeTransfer(REWARD_TOKEN, _beneficiary, _reward);
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