Uninitialized.destination (tests/uninitialized.sol#5) is never initialized. It is used in: - Uninitialized.transfer() (tests/uninitialized.sol#7-9) Test.balances (tests/uninitialized.sol#15) is never initialized. It is used in: - Test.use() (tests/uninitialized.sol#23-26) Test2.st (tests/uninitialized.sol#45) is never initialized. It is used in: - Test2.use() (tests/uninitialized.sol#53-56) Test2.v (tests/uninitialized.sol#47) is never initialized. It is used in: - Test2.init() (tests/uninitialized.sol#49-51) Reference: https://github.com/crytic/slither/wiki/Detector-Documentation#uninitialized-state-variables tests/uninitialized.sol analyzed (4 contracts with 1 detectors), 4 result(s) found Use https://crytic.io/ to get access to additional detectors and Github integration