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Accrue interests checks borrow is non zero #91

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merged 4 commits into from
Jul 10, 2023
Merged

Accrue interests checks borrow is non zero #91

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99cfa52
refactor: check borrow instead of supply when accruing interests
QGarchery Jul 10, 2023
a51d0de
docs: comment about total supply non-zero
QGarchery Jul 10, 2023
1c06c05
refactor: removed cached total supply in accrue interests
QGarchery Jul 10, 2023
214e6b5
Merge remote-tracking branch 'origin/dev' into refactor/interests-che…
QGarchery Jul 10, 2023
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7 changes: 3 additions & 4 deletions src/Blue.sol
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Original file line number Diff line number Diff line change
Expand Up @@ -238,14 +238,13 @@ contract Blue {
// Interests management.

function accrueInterests(Market calldata market, Id id) private {
uint marketTotalSupply = totalSupply[id];
uint marketTotalBorrow = totalBorrow[id];

if (marketTotalSupply != 0) {
uint marketTotalBorrow = totalBorrow[id];
if (marketTotalBorrow != 0) {
uint borrowRate = market.irm.borrowRate(market);
uint accruedInterests = marketTotalBorrow.wMul(borrowRate).wMul(block.timestamp - lastUpdate[id]);
totalSupply[id] = marketTotalSupply + accruedInterests;
totalBorrow[id] = marketTotalBorrow + accruedInterests;
totalSupply[id] += accruedInterests;
}

lastUpdate[id] = block.timestamp;
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