Solc version used (known-bug versions flagged)
Sky Lending (formerly MakerDAO)'s assessment for RD-F-170 — scored yellow on the v1.7.0 rubric. The evidence below is the curator's reasoning for this score.
Evidence summary #
Vat deployed with Solidity 0.5.12 (EOL; optimization DISABLED — eliminates optimizer-class bugs). StorageArrayClearingBug fixed in 0.5.10 (before Vat deploy). Liquidations 2.0 uses 0.6.12 (EOL). Endgame USDS/SKY/sUSDS uses 0.8.21 (current, no known bugs). EOL versions in core but practical risk mitigated by optimizer-off and no post-deploy changes.
Sources #
- URLhttps://docs.soliditylang.org/en/v0.5.12/bugs.htmlretrieved 2026-04-27
- https://etherscan.io/address/0x1923DfeE706A8E78157416C29cBCCFDe7cdF4102retrieved 2026-04-27
- https://etherscan.io/address/0x35D1b3F3D7966A1DFe207aa4514C12a259A0492Bretrieved 2026-04-27
Methodology #
Identify the Solidity compiler version used for deployed bytecode and flag if it appears on the known-bug list (solc bugs.json or Vyper 0.2.15–0.3.0 range).
See the full factor methodology and distribution across all protocols →