60f60c8475
Summary: disable UBSAN for functions with intentional left shift on -ve number / overflow These functions are rocksdb:: Hash FixedLengthColBufEncoder::Append FaultInjectionTest:: Key Closes https://github.com/facebook/rocksdb/pull/1577 Differential Revision: D4240801 Pulled By: IslamAbdelRahman fbshipit-source-id: 3e1caf6