llvm-project

4822f498 - [LifetimeSafety] Add parameter lifetime tracking in CFG (#169320)

[LifetimeSafety] Add parameter lifetime tracking in CFG (#169320) This PR enhances the CFG builder to properly handle function parameters in lifetime analysis: 1. Added code to include parameters in the initial scope during CFG construction for both `FunctionDecl` and `BlockDecl` types 2. Added a special case to skip reference parameters, as they don't need automatic destruction 3. Fixed several test cases that were previously marked as "FIXME" due to missing parameter lifetime tracking Previously, Clang's lifetime analysis was not properly tracking the lifetime of function parameters, causing it to miss important use-after-return bugs when parameter values were returned by reference or address. This change ensures that parameters are properly tracked in the CFG, allowing the analyzer to correctly identify when stack memory associated with parameters is returned. Fixes https://github.com/llvm/llvm-project/issues/169014