Deprecated standard detected ContractWithDeprecatedReferences.globalBlockHash (tests/deprecated_calls.sol#2): - Usage of "block.blockhash()" should be replaced with "blockhash()" Deprecated standard detected msg.gas == msg.value (tests/deprecated_calls.sol#7): - Usage of "msg.gas" should be replaced with "gasleft()" Deprecated standard detected THROW (tests/deprecated_calls.sol#9): - Usage of "throw" should be replaced with "revert()" Deprecated standard detected sha3Result = sha3()(test deprecated sha3 usage) (tests/deprecated_calls.sol#16): - Usage of "sha3()" should be replaced with "keccak256()" Deprecated standard detected blockHashResult = block.blockhash(0) (tests/deprecated_calls.sol#19): - Usage of "block.blockhash()" should be replaced with "blockhash()" Deprecated standard detected address(this).callcode() (tests/deprecated_calls.sol#22): - Usage of "callcode" should be replaced with "delegatecall" Deprecated standard detected suicide(address)(address(0)) (tests/deprecated_calls.sol#25): - Usage of "suicide()" should be replaced with "selfdestruct()" Deprecated standard detected globalBlockHash = block.blockhash(0) (tests/deprecated_calls.sol#2): - Usage of "block.blockhash()" should be replaced with "blockhash()" Reference: https://github.com/crytic/slither/wiki/Detector-Documentation#deprecated-standards tests/deprecated_calls.sol analyzed (1 contracts with 1 detectors), 8 result(s) found Use https://crytic.io/ to get access to additional detectors and Github integration